[Federal Register: October 26, 2004 (Volume 69, Number 206)]
[Rules and Regulations]
[Page 62400-62401]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr26oc04-5]
[[Page 62400]]
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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; correction.
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SUMMARY: The FAA is correcting an error in an existing airworthiness
directive (AD) that was published in the Federal Register on September
2, 2004 (69 FR 53609). The error resulted in inadvertent reference to
inappropriate service information. We are also clarifying reference to
a compliance threshold. This AD applies to certain Bombardier Model CL-
600-2C10 (Regional Jet Series 700 & 701), and CL-600-2D24 (Regional Jet
Series 900) series airplanes. This AD requires revising the airplane
flight manual to advise the flightcrew to monitor the fuel quantity in
the center fuel tank throughout the flight. This 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, this AD also requires
installation of flexible hoses and brackets in the fuel feed system.
This AD also 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.
DATES: Effective September 17, 2004.
ADDRESSES: You can examine the contents of this AD docket on the
Internet at http://dms.dot.gov, or in person 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.
FOR FURTHER INFORMATION CONTACT:
Technical information: 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.
Plain language information: Marcia Walters, marcia.walters@faa.gov.
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 Docket
You can examine the AD docket on the Internet at http://dms.dot.gov
, or in person at the Docket Management Facility between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
SUPPLEMENTARY INFORMATION: On August 25, 2004, the FAA issued AD 2004-
18-03, amendment 39-13781 (69 FR 53609, September 2, 2004), for certain
Bombardier Model CL-600-2C10 (Regional Jet Series 700 & 701), and CL-
600-2D24 (Regional Jet Series 900) series airplanes. The AD requires
revising the airplane flight manual to advise the flightcrew to monitor
the fuel quantity in the center fuel tank throughout the flight. This
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, this AD also requires installation of flexible hoses and
brackets in the fuel feed system. This AD also 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.
As published, the requirements of paragraph (j) of the AD specify
that ``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.'' Paragraph (j) is not
clear with respect to the action required for an airplane on which fuel
feed ejectors having part number T99A38-603 are not installed.
Paragraph (j) has been clarified to state that if there are no fuel
feed ejectors installed having P/N T99A38-603, no further action is
required by the AD.
As published, the compliance time for the requirements of paragraph
(k) of the AD specifies a compliance time of ``before accumulating
2,000 total flight hours or within 14 days after the effective date of
this AD, whichever occurs later, * * *.'' To clarify that the threshold
compliance time is for the fuel feed ejectors, we have added the words
``on the fuel feed ejectors'' after the words ``before accumulating
2,000 total flight hours.''
As published, the requirements of paragraph (m) of the AD
inadvertently specify performing certain requirements 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.
Reference to that service information in paragraph (m) of the AD is
incorrect and has been removed. As discussed in the ``Differences''
section of the AD, the Canadian airworthiness directive specifies that
the pilots receive a briefing on the procedure in use for the leak
check. The AD does not require a pilot briefing, since the pre-flight
procedures associated with performing the leak check should be
accomplished by appropriate maintenance personnel. We have received
reports that the intent of paragraph (m) of the AD is not clear. To
provide clarification of paragraph (m) of the AD, a statement has been
added to specify that the requirements of paragraph (m) must be
performed by appropriate maintenance personnel.
No other part of the regulatory information has been changed;
therefore, the final rule is not republished in the Federal Register.
The effective date of this AD remains September 17, 2004.
Sec. 39.13 [Corrected]
0
On page 53612, in the third column, paragraph (j) of AD 2004-18-03 is
corrected to read as follows:
* * * * *
(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. If no primary
fuel feed ejector having P/N T99A38-603 is installed, no further action
is required by this AD.
* * * * *
0
On page 53613, in the first column, paragraph (k) of AD 2004-18-03 is
corrected to read as follows:
* * * * *
(k) Except as stated in paragraph (l) of this AD, before
accumulating 2,000 total flight hours on the fuel feed ejector, or
within 14 days after the effective date of this AD, whichever occurs
later, begin doing the actions specified in paragraph
[[Page 62401]]
(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.
* * * * *
0
On page 53613 in the first column, paragraph (m) of AD 2004-18-03 is
corrected to read as follows:
* * * * *
(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. For the daily check, the fuel
quantity in the center fuel tank must be 4,000 pounds or less. This
daily check must be performed by appropriate maintenance personnel.
* * * * *
Issued in Renton, Washington, on October 15, 2004.
Kalene C. Yanamura,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 04-23927 Filed 10-25-04; 8:45 am]
BILLING CODE 4910-13-P