[Federal Register: August 8, 2005 (Volume 70, Number 151)]
[Proposed Rules]
[Page 45585-45587]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr08au05-23]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2005-22031; Directorate Identifier 2004-NM-259-AD]
RIN 2120-AA64
Airworthiness Directives; Meggitt Model 602 Smoke Detectors
Approved Under Technical Standard Order (TSO) TSO-C1C and Installed on
Various Transport Category Airplanes, Including But Not Limited to
Aerospatiale Model ATR42 and ATR72 Airplanes; Boeing Model 727 and 737
Airplanes; McDonnell Douglas Model DC-10-10, DC-10-10F, DC-10-15, DC-
10-30 and DC-10-30F (KC-10A and KDC-10), DC-10-40, DC-10-40F, MD-10-
10F, MD-10-30F, MD-11, and MD-11F Airplanes
AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).
ACTION: Notice of proposed rulemaking (NPRM).
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SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD)
for certain smoke detectors installed on various transport category
airplanes. This proposed AD would require replacing the affected smoke
detectors with modified smoke detectors. This proposed AD is prompted
by a report indicating that the affected smoke detectors can ``lock
up'' during electrical power transfer from the auxiliary power unit to
the engines. We are proposing this AD to identify and provide
corrective action for a potentially inoperative smoke detector and to
ensure that the flightcrew is alerted in the event of a fire.
DATES: We must receive comments on this proposed AD by September 22,
2005.
ADDRESSES: Use one of the following addresses to submit comments on
this proposed AD.
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.
By 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.
For service information identified in this proposed AD, contact
Meggitt Safety Systems Inc., 1915 Voyager Avenue, Simi Valley,
California 93063.
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. This docket
number is FAA-2005-22031; the directorate identifier for this docket is
2004-NM-259-AD.
FOR FURTHER INFORMATION CONTACT: Ken Sujishi, Aerospace Engineer, Cabin
Safety, Mechanical, and Environmental Branch, ANM-150L, FAA, Los
Angeles Aircraft Certification Office, 3960 Paramount Boulevard,
Lakewood, California 90712-4137; telephone (562) 627-5353; fax (562)
627-5210.
SUPPLEMENTARY INFORMATION:
Comments Invited
We invite you to submit any relevant written data, views, or
arguments regarding this proposed AD. Send your comments to an address
listed under ADDRESSES. Include ``Docket No. FAA-2005-22031;
Directorate Identifier 2004-NM-259-AD'' in the subject line of your
comments. We specifically invite comments on the overall regulatory,
economic, environmental, and energy aspects of the proposed AD. We will
consider all comments submitted by the closing date and may amend the
proposed 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 proposed AD. Using the search function of
that 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 can review DOT's complete Privacy Act Statement in the
Federal Register published on April 11, 2000 (65 FR 19477-78), or you
can visit http://dms.dot.gov.
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 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 located 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.
Discussion
We have received a report indicating that an unsafe condition may
exist on transport category airplanes equipped with certain smoke
detectors. The affected smoke detectors are Meggitt Model 602 smoke
detectors approved under Technical Standard Order (TSO) TSO-C1C and
having certain part numbers (P/Ns) 8930-( ). Testing indicated a design
discrepancy involving the operation of these smoke detectors. During a
test on McDonnell Douglas Model MD-11F airplanes, 31 of 33 smoke
detectors ``locked up'' when the power to the smoke detectors was
interrupted during power transfer from the auxiliary power unit (APU)
to the engines. Investigation revealed that the smoke detector circuit
does not meet power interrupt requirements during a power transfer
between ground power, APU power, and main engine power sources on the
airplane. When the smoke detector locks up, the flightcrew is unaware
of the inoperative smoke detector unless they test the smoke
[[Page 45586]]
detection system. The smoke detector remains inoperative until power to
the unit is cycled off and on. Under these conditions, the flightcrew
would not be alerted in the event of a fire.
This lock-up condition may also be produced by electrical power
transfer on other airplanes equipped with an affected smoke detector.
Included in that group are airplanes listed in the following table:
Affected Airplanes
------------------------------------------------------------------------
Manufacturer Model
------------------------------------------------------------------------
Aerospatiale...................... ATR42 and ATR72 airplanes.
Boeing............................ 727 and 737 airplanes.
McDonnell Douglas................. DC-10-10 and DC-10-10F; DC-10-15; DC-
10-30 and DC-10-30F (KC-10A and KDC-
10); and DC-10-40 and DC-10-40F
airplanes.
MD-10-10F and MD-10-30F airplanes.
MD-11 and MD-11F airplanes.
------------------------------------------------------------------------
Therefore, all of these airplanes may be subject to the identified
unsafe condition.
Related AD
On January 12, 2005, we issued AD 2005-02-04, amendment 39-13949
(70 FR 3296, January 24, 2005), for all McDonnell Douglas Model MD-10-
10F, MD-10-30F, MD-11F, DC-10-10F, and DC-10-30F airplanes. AD 2005-02-
04 requires identifying the part number of the cargo compartment smoke
detectors and, if necessary, revising the Limitations section of the
airplane flight manual to include procedures for testing the smoke
detection system after the last engine is started. That AD also
provides for the optional replacement of the subject smoke detectors
with modified smoke detectors, which would terminate the operational
limitation.
Similar to this new proposed AD, AD 2005-02-04 was prompted by a
report indicating that these smoke detectors can ``lock up'' during
electrical power transfer from the APU to the engines. We issued that
AD to identify and provide corrective action for a potentially
inoperative smoke detector in the cargo compartment and to ensure that
the flightcrew is alerted in the event of a cargo compartment fire.
When this new AD becomes effective, we will rescind AD 2005-02-04.
Relevant Service Information
We have reviewed Meggitt Safety Systems Service Information Letter
(SIL) 8930-26-01, dated November 8, 2004. The SIL provides procedures
for, among other things, replacing the affected smoke detectors with
modified smoke detectors, which is intended to adequately address the
unsafe condition.
FAA's Determination and Requirements of the Proposed AD
We have evaluated all pertinent information and identified an
unsafe condition that is likely to exist or develop on other airplanes
of this same type design. Therefore, we are proposing this AD, which
would require accomplishing the actions specified in the service
information described previously.
Costs of Compliance
It would take about 1 work hour per airplane, at an average hourly
labor rate of $65, to replace a smoke detector installed on the
airplane. Replacement parts would be provided at no cost to the
operators. We have been advised that about 4,637 smoke detectors have
already been replaced. We estimate that affected smoke detectors are
installed on 318 U.S.-registered airplanes. There may be as many as 28
affected smoke detectors on an airplane. This proposed AD could cost as
much as $1,820 per airplane.
Authority for This Rulemaking
Title 49 of the United States Code specifies the FAA's authority to
issue rules on aviation safety. Subtitle I, section 106, describes the
authority of the FAA Administrator. Subtitle VII, Aviation Programs,
describes in more detail the scope of the Agency's authority.
We are issuing this rulemaking under the authority described in
subtitle VII, part A, subpart III, section 44701, ``General
requirements.'' Under that section, Congress charges the FAA with
promoting safe flight of civil aircraft in air commerce by prescribing
regulations for practices, methods, and procedures the Administrator
finds necessary for safety in air commerce. This regulation is within
the scope of that authority because it addresses an unsafe condition
that is likely to exist or develop on products identified in this
rulemaking action.
Regulatory Findings
We have determined that this proposed AD would not have federalism
implications under Executive Order 13132. This proposed AD would 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 proposed
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 proposed 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, Safety.
The Proposed Amendment
Accordingly, under the authority delegated to me by the
Administrator, the FAA proposes to amend 14 CFR part 39 as follows:
PART 39--AIRWORTHINESS DIRECTIVES
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]
2. The FAA amends Sec. 39.13 by adding the following new
airworthiness directive (AD):
Transport Category Airplanes: Docket No. FAA-2005-22031; Directorate
Identifier 2004-NM-259-AD.
Comments Due Date
(a) The Federal Aviation Administration (FAA) must receive
comments on this AD action by September 22, 2005.
[[Page 45587]]
Affected ADs
(b) Accomplishment of certain actions required by this AD
terminates certain requirements of AD 2005-02-04, amendment 39-
13949.
Applicability: (c) This AD applies to Meggitt Model 602 smoke
detectors approved under Technical Standard Order (TSO) TSO-C1C and
having any P/N 8930-( ) identified in Meggitt Safety Systems Service
Information Letter 8930-26-01, as installed on various transport
category airplanes, certificated in any category, including but not
limited to the airplane models listed in Table 1 of this AD.
Table 1.--Certain Affected Airplanes
------------------------------------------------------------------------
Manufacturer Model
------------------------------------------------------------------------
Aerospatiale...................... ATR42-200, -300, -320, and -500
airplanes.
ATR72-101, -201, -102, -202, -211, -
212, and -212A airplanes.
Boeing............................ 727, 727C, 727-100, 727 -100C, 727-
200, and 727-200F series airplanes.
737-100, -200, -200C, -300, -400, -
500, -600, -700, -700C, -800 and -
900 series airplanes.
McDonnell Douglas................. DC-10-10 and DC-10-10F; DC-10-15; DC-
10-30 and DC-10-30F, (KC-10A and
KDC-10); and DC-10-40 and DC-10-40F
airplanes.
MD-10-10F and MD-10-30F airplanes.
MD-11 and MD-11F airplanes.
------------------------------------------------------------------------
Unsafe Condition
(d) This AD is prompted by a report indicating that the affected
smoke detectors can ``lock up'' during electrical power transfer
from the auxiliary power unit (APU) to the engines. We are issuing
this AD to identify and provide corrective action for a potentially
inoperative smoke detector and to ensure that the flightcrew is
alerted in the event of a fire.
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.
Smoke Detector Identification/Replacement
(f) Within 6 months after the effective date of this AD, replace
the affected smoke detector with a modified smoke detector, in
accordance with Meggitt Safety Systems Service Information Letter
8930-26-01.
Effect on AD 2005-02-04
(g) For airplanes subject to the requirements of AD 2005-02-04:
After all affected smoke detectors have been replaced with modified
smoke detectors in accordance with paragraph (f) of this AD, the
operational limitation required by paragraph (h) of AD 2005-02-04 is
terminated and may be removed from the airplane flight manual.
Parts Installation
(h) As of the effective date of this AD, no person may install
on any airplane a Meggitt Model 602 smoke detector having any P/N
8930-( ) identified in Meggitt Service Information Letter 8930-26-
01, dated November 8, 2004.
Alternative Methods of Compliance (AMOCs)
(i) The Manager, Los Angeles Aircraft Certification Office, FAA,
has the authority to approve AMOCs for this AD, if requested in
accordance with the procedures found in 14 CFR 39.19.
Issued in Renton, Washington, on August 1, 2005.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 05-15590 Filed 8-5-05; 8:45 am]
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