[Federal Register: September 2, 2004 (Volume 69, Number 170)]
[Rules and Regulations]
[Page 53609-53614]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr02se04-5]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2004-18993; Directorate Identifier 2004-NM-125-AD;
Amendment 39-13781; AD 2004-18-03]
RIN 2120-AA64
Airworthiness Directives; Bombardier Model CL-600-2C10 (Regional
Jet Series 700 & 701), and CL-600-2D24 (Regional Jet Series 900) Series
Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule; request for comments.
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SUMMARY: The FAA is superseding an existing airworthiness directive
(AD) for certain Bombardier Model CL-600-2C10 (Regional Jet Series 700
& 701), and CL-600-2D24 (Regional Jet Series 900) series airplanes.
That AD currently requires revising the airplane flight manual to
advise the flightcrew to monitor the fuel quantity in the center fuel
tank throughout the flight. That AD also requires repetitive tests to
detect a fuel leak between the wing fuel tanks and the center fuel
tank; and further related investigative and corrective actions, if
necessary. For certain airplanes, that AD also requires installation of
flexible hoses and brackets in the fuel feed system. This AD reduces
the compliance times for the repetitive checks, requires replacement of
primary fuel feed ejectors with new ejectors, and provides an optional
center fuel tank empty procedure. This AD is prompted by reports of
cracking in the primary fuel ejector. We are issuing this AD to detect
and correct cracking in any primary fuel ejector, which could cause
fuel leakage into the center fuel tank, and could result in engine
shutdown during flight.
DATES: Effective September 17, 2004.
The incorporation by reference of certain publications listed in
the AD was approved previously by the Director of the Federal Register
as of April 15, 2004 (69 FR 16780, March 31, 2004).
We must receive any comments on this AD by November 1, 2004.
ADDRESSES: Use one of the following addresses to submit comments on
this AD.
[[Page 53610]]
DOT Docket Web site: Go to http: //dms.dot.gov and follow
the instructions for sending your comments electronically.
Government-wide rulemaking Web site: Go to http://www.regulations.gov
and follow the instructions for sending your
comments electronically.
Mail: Docket Management Facility, U.S. Department of
Transportation, 400 Seventh Street SW., Nassif Building, room PL-401,
Washington, DC 20590.
Fax: (202) 493-2251.
Hand Delivery: room PL-401 on the plaza level of the
Nassif Building, 400 Seventh Street SW., Washington, DC, between 9 a.m.
and 5 p.m., Monday through Friday, except Federal holidays.
You can get the service information identified in this AD from
Bombardier, Inc., Canadair, Aerospace Group, P.O. Box 6087, Station
Centre-ville, Montreal, Quebec H3C 3G9, Canada. You may examine this
information at the National Archives and Records Administration (NARA).
For information on the availability of this material at NARA, call
(202) 741-6030, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html
.
You may examine the contents of this AD docket on the Internet at
http://dms.dot.gov, or at the Docket Management Facility, U.S.
Department of Transportation, 400 Seventh Street SW., room PL-401, on
the plaza level of the Nassif Building, Washington, DC.
Docket Management System (DMS)
The FAA has implemented new procedures for maintaining AD dockets
electronically. As of May 17, 2004, new AD actions are posted on DMS
and assigned a docket number. We track each action and assign a
corresponding directorate identifier. The DMS AD docket number is in
the form ``Docket No. FAA-2004-99999.'' The Transport Airplane
Directorate identifier is in the form ``Directorate Identifier 2004-NM-
999-AD.'' Each DMS AD docket also lists the directorate identifier
(``Old Docket Number'') as a cross-reference for searching purposes.
Examining the Dockets
You can examine the AD docket on the Internet at http://dms.dot.gov
, or in person at the Docket Management Facility office
between 9 a.m. and 5 p.m., Monday through Friday, except Federal
holidays. The Docket Management Facility office (telephone (800) 647-
5227) is on the plaza level of the Nassif Building at the DOT street
address stated in the ADDRESSES section. Comments will be available in
the AD docket shortly after the DMS receives them.
FOR FURTHER INFORMATION CONTACT: James Delisio, Aerospace Engineer,
Airframe and Propulsion Branch, ANE-171, FAA, New York Aircraft
Certification Office, 1600 Stewart Avenue, Suite 410, Westbury, New
York 11590; telephone (516) 228-7321; fax (516) 794-5531.
SUPPLEMENTARY INFORMATION: On March 19, 2004, we issued AD 2004-07-01,
amendment 39-13545 (69 FR 16780, March 31, 2004). That AD applies to
certain Bombardier Model CL-600-2C10 (Regional Jet Series 700 & 701),
and CL-600-2D24 (Regional Jet Series 900) series airplanes. That AD
requires revising the airplane flight manual (AFM) to advise the
flightcrew to monitor the fuel quantity in the center fuel tank
throughout the flight. That AD also requires repetitive tests to detect
a fuel leak between the wing fuel tanks and the center fuel tank; and
further related investigative and corrective actions, if necessary. For
certain airplanes, that AD also requires installation of flexible hoses
and brackets in the fuel feed system. That AD was prompted by reports
of longitudinal cracks found in a primary fuel ejector on affected
airplanes. The actions specified in that AD are intended to detect and
correct cracking of the primary fuel ejectors, which could cause fuel
leakage into the center fuel tank, and could result in engine shutdown
during flight.
Actions Since AD Was Issued
Since we issued that AD, Transport Canada Civil Aviation (TCCA),
which is the airworthiness authority for Canada, has issued Canadian
airworthiness directive CF-2004-04R2, issued April 16, 2004. The
revised Canadian airworthiness directive mandates a revision to the
AFM, replacement of certain primary fuel feed ejectors, and operational
leak checks of the center tank; and provides for an optional center
fuel tank empty procedure.
Relevant Service Information
Bombardier has issued the following temporary revisions (TRs) to
the AFM:
CRJ Regional Jet (Bombardier) TR RJ 700/52-2, dated
December 19, 2003, to the Bombardier Model CL-600-2C10 AFM, Document
CSP B-012; and
CRJ Regional Jet (Bombardier) TR RJ 900/10-1, dated
December 19, 2003, to the Bombardier Model CL-600-2D24 AFM, Document
CSP C-012.
These TRs describe revisions to the Abnormal Procedures section of
the AFM to advise the flightcrew to monitor the fuel quantity in the
center fuel tank throughout the flight.
Bombardier has also issued CRJ 700/900 Regional Jet Alert Service
Bulletin 670BA-28-025, Revision A, dated December 15, 2003. This
service bulletin describes procedures for performing repetitive checks
to detect fuel leaking between the wing tanks and the center tank. The
leak check involves filling the wing fuel tanks with a specified
quantity of fuel, and monitoring the amount of fuel increase in the
center tank over time. The service bulletin also describes procedures
for sending the results of the leak check to the Bombardier Technical
Help Desk.
If the amount of fuel increase in the center fuel tank is more than
150 pounds (68 Kilograms (kgs)), the service bulletin describes
procedures for further related investigative and corrective actions.
The related investigative action involves doing a general visual
inspection of the center tank (including the ejectors and fuel system
components) to determine the source of the leak. When the source of the
leak is found, the corrective action involves replacing any cracked or
damaged part with a new part. The service bulletin also includes
directions for faxing inspection results and for sending all replaced
parts to Bombardier.
For airplanes having serial numbers 10005 through 10065 inclusive,
the service bulletin specifies that, before the leak check, flexible
hoses and brackets must be installed in the fuel feed system in
accordance with CRJ 700 Regional Jet (Bombardier) Service Bulletin
670BA-28-008, Revision C, dated January 23, 2003. These installations
are intended to address conditions that can result in fuel line and
coupling damage, and leakage due to the combined effects of
installation misalignment and vibration.
Accomplishing the actions specified in the service information will
adequately address the unsafe condition. TCCA mandated the service
information and issued Canadian airworthiness directive CF-2004-04R2,
issued April 16, 2004, to ensure the continued airworthiness of these
airplanes in Canada.
FAA's Determination and Requirements of This AD
These airplane models are manufactured in Canada and are type
certificated for operation in the United States under the provisions of
section 21.29 of the Federal Aviation Regulations (14 CFR 21.29) and
the applicable bilateral airworthiness agreement. Pursuant to this
bilateral airworthiness agreement, the TCCA has kept the FAA informed
of the situation
[[Page 53611]]
described above. We have examined the TCCA's findings, evaluated all
pertinent information, and determined that we need to issue an AD for
products of this type design that are certificated for operation in the
United States. Therefore, we are issuing this AD to detect and correct
cracking of the primary fuel ejectors, which could cause fuel leakage
into the center fuel tank, and could result in engine shutdown during
flight.
This AD requires you to use the service information described
previously to perform these actions, except as discussed under the
following paragraph.
Differences Among the Canadian Airworthiness Directive, Service
Bulletin, and This AD
The Canadian airworthiness directive allows for leak checks to be
performed in accordance with CRJ 700/900 Regional Jet (Bombardier)
Alert Service Bulletin 670BA-28-025, original issue, dated December 12,
2003; or CRJ 700/900 Regional Jet (Bombardier) Alert Service Bulletin
670BA-28-025, Revision A, dated December 15, 2003. However, this AD
requires those actions to be done in accordance with Revision A.
Revision A contains significant changes to certain procedures.
Additionally, the Canadian airworthiness directive requires the
leak checks to be accomplished ``between each flight.'' However, we
consider that performing the leak check once a day, in addition to
requiring use of procedures for operation with the center fuel tank
empty for those primary ejectors that exceed 3,500 flight hours,
provides an adequate level of safety.
Although the Canadian airworthiness directive specifies that the
pilots receive a briefing on the procedure in use for the leak check,
this AD does not require that briefing, since the pre-flight procedures
associated with performing the leak check should be accomplished by
appropriate maintenance personnel.
Although Service Bulletin 670BA-28-025, Revision A, recommends and
the Canadian airworthiness directive mandates sending reports of
certain findings to the manufacturer, this AD does not include those
requirements.
Although Service Bulletin 670BA-28-025, Revision A, includes
instructions for sending all damaged parts to the manufacturer, this AD
does not include that requirement.
The differences cited above have been coordinated with the TCCA.
Clarification of the Use of Certain Terms
In AD 2004-07-01, we used the term ``leak test'' for certain
requirements. For the purposes of this AD, we have revised the term
``leak test'' to specify ``leak check.'' We made this change in order
to more closely follow the intent and terminology of the referenced
service information and the airworthiness directive issued by the TCCA.
We consider that using the term ``leak check'' will clarify certain
requirements.
Change to Existing AD
This AD would retain certain requirements of AD 2004-07-01. Since
AD 2004-07-01 was issued, the AD format has been revised, and certain
paragraphs have been rearranged. As a result, the corresponding
paragraph identifiers have changed in this AD, as listed in the
following table:
Revised Paragraph Identifiers
------------------------------------------------------------------------
Corresponding requirement in
Requirement in AD 2004-07-01 this AD
------------------------------------------------------------------------
paragraph (a)............................. paragraph (f).
paragraph (b)............................. paragraph (g).
paragraph (c)............................. paragraph (h).
paragraph (d)............................. paragraph (i).
------------------------------------------------------------------------
Interim Action
This is considered to be interim action until final action is
identified, at which time we may consider further rulemaking.
FAA's Determination of the Effective Date
An unsafe condition exists that requires the immediate adoption of
this AD; therefore, providing notice and opportunity for public comment
before the AD is issued is impracticable, and good cause exists to make
this AD effective in less than 30 days.
Comments Invited
This AD is a final rule that involves requirements that affect
flight safety and was not preceded by notice and an opportunity for
public comment; however, we invite you to submit any relevant written
data, views, or arguments regarding this AD. Send your comments to an
address listed under ADDRESSES. Include ``Docket No. FAA-2004-18993;
Directorate Identifier 2004-NM-125-AD'' at the beginning of your
comments. We specifically invite comments on the overall regulatory,
economic, environmental, and energy aspects of the AD. We will consider
all comments received by the closing date and may amend the AD in light
of those comments.
We will post all comments we receive, without change, to http://dms.dot.gov
, including any personal information you provide. We will
also post a report summarizing each substantive verbal contact with FAA
personnel concerning this AD. Using the search function of our docket
web site, anyone can find and read the comments in any of our dockets,
including the name of the individual who sent the comment (or signed
the comment on behalf of an association, business, labor union, etc.).
You may review the DOT's complete Privacy Act Statement in the Federal
Register published on April 11, 2000 (65 FR 19477-78), or you may visit
http://dms.dot.gov.
We are reviewing the writing style we currently use in regulatory
documents. We are interested in your comments on whether the style of
this document is clear, and your suggestions to improve the clarity of
our communications with you. You can get more information about plain
language at http://www.faa.gov/language and http://www.plainlanguage.gov.Regulatory
Findings
We have determined that this AD will not have federalism
implications under Executive Order 13132. This AD will not have a
substantial direct effect on the States, on the relationship between
the national Government and the States, or on the distribution of power
and responsibilities among the various levels of government.
For the reasons discussed above, I certify that the regulation:
1. Is not a ``significant regulatory action'' under Executive Order
12866;
2. Is not a ``significant rule'' under the DOT Regulatory Policies
and Procedures (44 FR 11034, February 26, 1979); and
3. Will not have a significant economic impact, positive or
negative, on a substantial number of small entities under the criteria
of the Regulatory Flexibility Act.
We prepared a regulatory evaluation of the estimated costs to
comply with this AD. See the ADDRESSES section for a location to
examine the regulatory evaluation.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.
Adoption of the Amendment
0
Accordingly, under the authority delegated to me by the Administrator,
the FAA amends part 39 of the Federal
[[Page 53612]]
Aviation Regulations (14 CFR part 39) as follows:
PART 39--AIRWORTHINESS DIRECTIVES
0
1. The authority citation for part 39 continues to read as follows:
Authority: 49 U.S.C. 106(g), 40113, 44701.
Sec. 39.13 [Amended]
0
2. The FAA amends Sec. 39.13 by removing amendment 39-13545 (69 FR
16780, March 31, 2004) and adding the following new AD:
2004-18-03 Bombardier, Inc. (Formerly Canadair): Docket No. FAA-
2004-18993; Directorate Identifier 2004-NM-125-AD; Amendment 39-
13781.
Effective Date
(a) This AD becomes effective September 17, 2004.
Affected ADs
(b) This AD supersedes AD 2004-07-01, amendment 39-13545 (69 FR
16780, March 31, 2004).
Applicability
(c) This AD applies to Bombardier Model CL-600-2C10 (Regional
Jet Series 700 & 701), and CL-600-2D24 (Regional Jet Series 900)
series airplanes; as listed in CRJ 700/900 Regional Jet (Bombardier)
Alert Service Bulletin 670BA-28-025, Revision A, dated December 15,
2003; certificated in any category.
Unsafe Condition
(d) This AD was prompted by reports of cracking in the primary
fuel ejector. We are issuing this AD to detect and correct cracking
in the primary fuel ejector, which could cause fuel leakage into the
center fuel tank and could result in engine shutdown during flight.
Compliance
(e) You are responsible for having the actions required by this
AD performed within the compliance times specified, unless the
actions have already been done.
Requirements of AD 2004-07-01
Airplane Flight Manual (AFM) Revisions
(f) Within 14 days after April 15, 2004 (the effective date of
AD 2004-07-01, amendment 39-13545): Revise the Abnormal Procedures
section of the Bombardier Model CL-600-2C10 and Model CL-600-2D24
AFM, Documents CSP B-012 and CSP C-012, to include the applicable
temporary revisions (TR) specified in paragraphs (f)(1) and (f)(2)
of this AD. Thereafter, operate the airplane per the limitations
specified in these AFM revisions.
(1) CRJ Regional Jet (Bombardier) TR RJ 700/52-2, dated December
19, 2003, to the Bombardier Model CL-600-2C10 AFM, Document CSP B-
012.
(2) CRJ Regional Jet (Bombardier) TR RJ 900/10-1, dated December
19, 2003, to the Bombardier Model CL-600-2D24 AFM, Document CSP C-
012.
Note 1: When information identical to that in the applicable TR
specified in paragraphs (f)(1) and (f)(2) of this AD has been
included in the general revisions of the applicable AFM, the general
revisions may be inserted into the AFM, and the TR may be removed
from the AFM.
Prior Requirement
(g) For airplanes having serial numbers (S/N) 10005 through
10065, inclusive; prior to accomplishing the leak test required by
paragraph (h) of this AD, install flexible hoses and brackets in the
fuel feed system in accordance with the Accomplishment Instructions
of Bombardier CRJ 700 Regional Jet Service Bulletin 670BA-28-008,
Revision C, dated January 23, 2003.
Leak Tests
(h) At the applicable compliance time, for the applicable S/N in
Table 1 of this AD, do a leak test between the wing tanks and the
center fuel tank in accordance with the Accomplishment Instructions
of CRJ 700/900 Regional Jet (Bombardier) Alert Service Bulletin
670BA-28-025, Revision A, dated December 15, 2003. Thereafter,
repeat the leak test at intervals not to exceed 450 flight hours.
Table 1.--Leak Test Thresholds
------------------------------------------------------------------------
Accumulated flight
Airplane S/N hours (as of April Inspection
14, 2004) threshold
------------------------------------------------------------------------
10005 through 10065, inclusive.. More than 2,500 Within 100 flight
flight hours hours after April
since 15, 2004.
accomplishment of
the service
bulletin in
paragraph (g) of
this AD.
---------------------------------
10005 through 10065, inclusive.. 2,500 flight hours Within 250 flight
or less since hours after April
accomplishment of 15, 2004.
the service
bulletin in
paragraph (g) of
this AD.
---------------------------------
10003 and 10004; 10066 through 2,500 flight hours Within 100 flight
10999, inclusive; and 15001 or more since the hours after April
through 15990, inclusive. date of issuance 15, 2004.
of the original
Airworthiness
Certificate or
the date of
issuance of the
Export
Certificate of
Airworthiness,
whichever occurs
first.
---------------------------------
10003 and 10004; 10066 through 2,499 flight hours Within 450 flight
10999, inclusive; and 15001 or less since the hours after April
through 15990, inclusive. date of issuance 15, 2004.
of the original
Airworthiness
Certificate or
the date of
issuance of the
Export
Certificate of
Airworthiness,
whichever occurs
first.
------------------------------------------------------------------------
Detailed Inspection and Repair
(i) If, during the leak test required by paragraph (h) of this
AD, the amount of fuel increase in the center fuel tank is 150
pounds (68 kilograms (Kgs)) or more: Before further flight, do the
further investigative and corrective actions, in accordance with the
Accomplishment Instructions of CRJ 700/900 Regional Jet (Bombardier)
Alert Service Bulletin 670BA-28-025, Revision A, dated December 15,
2003.
Note 2: For the purposes of this AD, a detailed inspection is
``an intensive examination of a specific item, installation, or
assembly to detect damage, failure, or irregularity. Available
lighting is normally supplemented with a direct source of good
lighting at an intensity deemed appropriate. Inspection aids such as
mirrors magnifying lenses, etc. may be necessary. Surface cleaning
and elaborate procedures may be required.''
New Requirements of This AD
Determination of Flight Hours and Replacement of Primary Fuel Feed
Ejectors
(j) Within three days after the effective date of this AD,
determine the number of total flight hours on each of the two
primary fuel feed ejectors having part number (P/N) T99A38-603.
(1) For any fuel feed ejector with 4,500 or more total flight
hours, before further flight, replace it with a new ejector in
accordance with Part B of the Accomplishment
[[Page 53613]]
Instructions of CRJ 700/900 Regional Jet (Bombardier) Alert Service
Bulletin (ASB) 670BA-28-025, Revision A, dated December 15, 2003.
(2) For any primary fuel feed ejector with less than 4,500 total
flight hours, replace the primary fuel feed ejector, P/N T99A38-603,
with a new ejector, in accordance with Part B of the Accomplishment
Instructions of CRJ 700/900 Regional Jet (Bombardier) ASB 670BA-28-
025, Revision A, dated December 15, 2003, at the later of the times
specified in paragraph (j)(2)(i) or (j)(2)(ii) of this AD.
(i) Before the accumulation of 3,500 total flight hours on a
primary fuel feed ejector.
(ii) Before the accumulation of 4,500 total flight hours on a
primary fuel feed ejector, or within 750 flight hours after the
effective date of this AD, whichever occurs first.
(3) Following replacement with a new ejector in accordance with
paragraph (j)(2)(i) or (j)(2)(ii) of this AD, primary fuel feed
ejectors must be replaced before accumulating 3,500 total flight
hours.
Daily Leak Checks or Fuel Tank Empty Procedures
(k) Except as stated in paragraph (l) of this AD, before
accumulating 2,000 total flight hours or within 14 days after the
effective date of this AD, whichever occurs later, begin doing the
actions specified in paragraph (m) or (p) of this AD. Accomplishing
the actions specified in paragraph (m) or (p) of this AD ends the
leak test (check) requirements of paragraph (h) of this AD.
(l) For any primary fuel feed ejector with 3,500 or more total
flight hours as of the effective date of this AD, within 14 days
after the effective date of this AD, begin doing the actions
specified in paragraph (p) of this AD, and repeat those actions
until the ejector is replaced in accordance with paragraph (j) of
this AD.
Daily Operational Leak Checks
(m) Once a day, before the first flight of the day: With both
engines operating at ground idle or taxi thrust, open both L&R XFER
SOV circuit breakers, 1N9 and 2P8, and monitor the fuel quantity of
the center fuel tank for five minutes, in accordance with Part A of
the Accomplishment Instructions of CRJ 700/900 Regional Jet
(Bombardier) ASB 670BA-28-025, Revision A, dated December 15, 2003.
For the daily check, the fuel quantity in the center fuel tank must
be 4,000 pounds or less.
Note 3: If the center fuel tank contains fuel when doing this
check, the following engine indicating and crew alerting system
(EICAS) caution message may be displayed: ``L XFER SOV and/or R XFER
SOV.''
Leak Check Results
(n) Do the actions specified in paragraph (n)(1) or (n)(2) of
this AD as applicable.
(1) If the leak check reveals that there is no fuel quantity
increase in the center fuel tank or the fuel quantity increase is
less than 150 pounds (68 kilograms (kg)): Before further flight,
close the circuit breakers in accordance with Part B of the
Accomplishment Instructions of CRJ 700/900 Regional Jet (Bombardier)
ASB 670BA-28-025, Revision A, dated December 15, 2003.
(2) If the leak check reveals a fuel quantity increase of 150
pounds or more in the center fuel tank: Before further flight, do
the investigative and corrective actions in accordance with the
procedures specified in Part B of the Accomplishment Instructions of
CRJ 700/900 Regional Jet (Bombardier) ASB 670BA-28-025, Revision A,
dated December 15, 2003.
Flight Operations Using the Center Fuel Tank Empty Procedure
(o) Before flight operations with the center fuel tank empty
procedure, revise the Limitations and Abnormal sections of the AFM
to include the following instructions. This may be done by inserting
a copy of this AD into the Limitations and Abnormal Procedures
sections of the AFM.
(1) Revise the Limitations Section to specify:
``For every flight of each day, check the quantity of fuel in
the center fuel tank during pre-flight and post-flight operations.
If the fuel quantity increase from the wing tanks to the center
fuel tank is more than 150 pounds (68kg): Before takeoff, turn the
airplane over to maintenance to perform corrective actions.''
(2) Revise the Abnormal Procedure section to specify:
``If an abnormal increase of the center fuel tank quantity is
detected or the center fuel tank quantity exceeds 600 pounds (272.2
kg) during flight: Immediately perform the actions specified in the
Abnormal Procedures Section of CRJ Regional Jet (Bombardier) TR RJ
700/52-2, dated December 19, 2003, to the Bombardier Model CL-600-
2C10 AFM, Document CSP B-012; or CRJ Regional Jet (Bombardier) TR RJ
900/10-1, dated December 19, 2003, to the Bombardier Model CL-600-
2D24 AFM, Document CSP C-012; as applicable.''
Before Dispatch for Flights Using the Center Fuel Tank Empty
Procedure
(p) Before dispatch of airplanes operating with the center fuel
tank empty, do the following actions:
(1) If the pre-flight fuel quantity check reveals that the
airplane has less than 300 pounds (136.1 kg) of fuel in the center
fuel tank and no leak is suspected: Open and collar both L&R XFER
SOV circuit breakers, 1N9 and 2P8. The fuel in the center fuel is
considered to be unusable.
Note 4: If the center fuel tank contains fuel when dispatching
in this condition, the following EICAS caution message may be
displayed: ``L XFER SOV and/or R XFER SOV.'' That message may be
removed by scrolling it away.
(2) If the pre-flight fuel quantity check reveals that the
center fuel tank quantity is greater than 300 pounds (136.1 kg) and
no leak is suspected: Do either (p)(2)(i) or (p)(2)(ii) of this AD
at the time specified:
(i) Before dispatch of the airplane: Un-collar and close the SOV
circuit breakers 1N9 and 2P8, to transfer the fuel from the center
fuel tank to the wing tanks and open and re-collar circuit breakers
1N9 and 2P8.
(ii) Before dispatch of the airplane: Drain (defuel) the center
fuel tank, in accordance with Part B of the Accomplishment
Instructions of CRJ 700/900 Regional Jet (Bombardier) ASB 670BA-28-
025, Revision A, dated December 15, 2003.
Corrective Actions for Center Fuel Tank Empty Procedures
(q) Before takeoff: If the fuel quantity increase from the wing
tanks to the center fuel tank is more than 150 pounds (68 kg), as
determined in paragraph (n) of this AD, do the investigative and
corrective actions in accordance with Part B of the Accomplishment
Instructions of CRJ 700/900 Regional Jet (Bombardier) ASB 670BA-28-
025, Revision A, dated December 15, 2003.
Abnormal Increase of the Center Fuel Tank Quantity
(r) If an abnormal increase of the center fuel tank quantity is
detected or the center fuel tank quantity exceeds 600 pounds (272.2
kg) during flight, after landing and before further flight, do the
investigative and corrective actions in accordance with Part B of
the Accomplishment Instructions of CRJ 700/900 Regional Jet
(Bombardier) ASB 670BA-28-025, Revision A, dated December 15, 2003.
Actions Accomplished Per Previous Releases of Service Bulletins
(s) Actions accomplished before the effective date of this AD in
accordance with the following service bulletins are considered
acceptable for compliance with the corresponding action in this AD:
(1) Bombardier CRJ 700 Regional Jet Service Bulletin 670BA-28-
008, Revision A, dated September 16, 2002; or Revision B, dated
October 2, 2002;
(2) CRJ 700/900 Regional Jet (Bombardier) ASB 670BA-28-025,
dated December 12, 2003, are considered acceptable for compliance
with the corresponding action in this AD.
Reporting and Parts Return Requirement
(t) Although the Accomplishment Instructions of CRJ 700/900
Regional Jet (Bombardier) ASB 670BA-28-025, Revision A, dated
December 15, 2003, specify to submit certain information to the
manufacturer, and to return damaged parts to the manufacturer; this
AD does not include those requirements.
Alternative Methods of Compliance (AMOCs)
(u) The Manager, New York Aircraft Certification Office (ACO),
FAA, has the authority to approve AMOCs for this AD, if requested in
accordance with the procedures found in 14 CFR 39.19.
Related Information
(v) Canadian airworthiness directive CF-2004-04R2, issued April
16, 2004, also addresses the subject of this AD.
Material Incorporated by Reference
(w) You must use the following documents to perform the actions
required by this AD, as applicable, unless the AD specifies
otherwise:
[[Page 53614]]
Table 2.--Material Incorporated by Reference
----------------------------------------------------------------------------------------------------------------
Service document Revision level Date
----------------------------------------------------------------------------------------------------------------
Bombardier CRJ 700 Regional Jet Service Revision C....................... January 23, 2003.
Bulletin 670BA-28-008.
CRJ 700/900 Regional Jet (Bombardier) Revision A....................... December 15, 2003.
Alert Service Bulletin 670BA-28-025,
excluding Appendix A.
CRJ Regional Jet (Bombardier) Temporary Original......................... December 19, 2003.
Revision RJ 700/52-2 to Bombardier CL-
600-2C10 Airplane Flight Manual,
Document CSP B-012.
CRJ Regional Jet (Bombardier) Temporary Original......................... December 19, 2003.
Revision RJ 900/10-1 to Bombardier CL-
600-2D24 Airplane Flight Manual,
Document CSP C-012.
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The Director of the Federal Register has previously approved the
incorporation by reference of these documents as of April 15, 2004
(69 FR 16780, March 31, 2004). You can get copies of the documents
from Bombardier, Inc., Canadair, Aerospace Group, P.O. Box 6087,
Station Centre-ville, Montreal, Quebec H3C 3G9, Canada. You can
review copies at the Docket Management Facility, U.S. Department of
Transportation, 400 Seventh Street, SW., room PL-401, Nassif
Building, Washington, DC; or at the National Archives and Records
Administration (NARA). For information on the availability of this
material at NARA, call (202) 741-6030, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html
.
Issued in Renton, Washington, on August 25, 2004.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 04-20014 Filed 9-1-04; 8:45 am]
BILLING CODE 4910-13-P