[Federal Register: July 13, 2006 (Volume 71, Number 134)]
[Proposed Rules]
[Page 39597-39600]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr13jy06-34]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2006-25326; Directorate Identifier 2006-NM-081-AD]
RIN 2120-AA64
Airworthiness Directives; Boeing Model 757-200 and -300 Series
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 Boeing Model 757-200 and -300 series airplanes. This
proposed AD would require changes to existing wiring; installation of
new circuit breakers, relays, relay connectors, and wiring; and
replacement of certain circuit breakers with higher-rated circuit
breakers. For certain airplanes, this proposed AD also requires
modification of wiring of the control module assembly for the
electrical systems. This proposed AD results from an in-flight
entertainment (IFE) systems review. We are proposing this AD to ensure
that the flightcrew is able to turn off electrical power to the IFE
system through utility bus switches in the flight compartment. The
flightcrew's inability to turn off power to the IFE system during a
non-normal or emergency situation could result in the inability to
control smoke or fumes in the airplane flight deck or cabin.
DATES: We must receive comments on this proposed AD by August 28, 2006.
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.
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.
Contact Boeing Commercial Airplanes, P.O. Box 3707, Seattle,
Washington 98124-2207, for the service information identified in this
proposed AD.
FOR FURTHER INFORMATION CONTACT: Natalie Phan-Tran, Aerospace Engineer,
Systems and Equipment Branch, ANM-130L, FAA, Los Angeles Aircraft
Certification Office, 3960 Paramount Boulevard, Lakewood, California
90712-4137; telephone (562) 627-5343; 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 in the ADDRESSES section. Include the docket number ``FAA-2006-
25326; Directorate Identifier 2006-NM-081-AD'' at the beginning 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 received 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 may review 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.
Examining the Docket
You may 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 Docket Management System
receives them.
Discussion
The Federal Aviation Administration (FAA) completed a review of in-
flight entertainment (IFE) systems certified by supplemental type
certificate (STC) and installed on transport category airplanes. The
review focused on the interface between the IFE system and airplane
electrical system, with the objective of determining if any unsafe
conditions exist with regard to the interface. STCs issued between 1992
and 2000 were considered for the review.
The type of IFE systems considered for review were those that
contain video monitors (cathode ray tubes or liquid crystal displays;
either hanging above the aisle or mounted on individual seat backs or
seat trays), or complex circuitry (i.e., power supplies, electronic
distribution boxes, extensive wire routing, relatively high power
consumption, multiple layers of circuit protection, etc.). In addition,
in-seat power supply systems that provide power to more than 20 percent
of the total passenger seats were also considered for the review. The
types of IFE systems not considered for review include systems that
provide only audio signals to each passenger seat, ordinary in-flight
telephone systems (e.g., one telephone handset per group of seats or
bulkhead-mounted telephones), systems that have only a video monitor on
the forward bulkhead(s) (or a projection system) to provide passengers
with basic airplane and flight information, and in-seat power supply
systems that provide power to less than 20 percent of the total
passenger seats.
Items considered during the review include the following:
Can the electrical bus(es) supplying power to the IFE
system be de-energized when necessary without removing power from
systems that may be required for continued safe flight and landing?
Can IFE system power be removed when required without
pulling IFE system circuit breakers (i.e., is there a
[[Page 39598]]
switch (dedicated to the IFE system or a combination of loads) located
in the flight deck or cabin that can be used to remove IFE power?)?
If the IFE system requires changes to flightcrew
procedures, has the airplane flight manual (AFM) been properly amended?
If the IFE system requires changes to cabin crew
procedures, have they been properly amended?
Does the IFE system require periodic or special
maintenance?
In all, we reviewed approximately 180 IFE systems approved by STC.
The review results indicate that potential unsafe conditions exist on
some IFE systems installed on various transport category airplanes.
These conditions can be summarized as:
Electrical bus(es) supplying power to the IFE system
cannot be de-energized when necessary without removing power from
systems that may be required for continued safe flight and landing.
Power cannot be removed from the IFE system when required
without pulling IFE system circuit breakers (i.e., there is no switch
dedicated to the IFE system or combination of systems for the purpose
of removing power).
Installation of the IFE system has affected crew
(flightcrew and/or cabin crew) procedures, but the procedures have not
been properly revised.
The IFE system on the Model 757-200 and -300 series airplanes is
connected to an electrical bus that cannot be deactivated without also
removing power from airplane systems necessary for safe flight and
landing. There is no other means to remove power from the IFE system.
This condition, if not corrected, could result in the flightcrew's
inability to turn off electrical power to the IFE system through
utility bus switches in the flight compartment during a non-normal or
emergency situation, and consequent inability to control smoke or fumes
in the airplane flight deck or cabin.
Other Relevant Rulemaking
We have issued numerous ADs previously that address unsafe
conditions and require corrective actions similar to those that would
be required by the proposed AD. Those ADs and the applicable airplanes
and STC number are identified in the following table.
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Airplanes STC No. AD reference
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Airbus Model A340-211 airplanes...... ST09092AC-D............................... AD 2001-18-01, amendment 39-
12427 (66 FR 46939,
September 10, 2001).
Boeing Model 737-200 series airplanes ST00516AT................................. AD 2004-05-27, amendment 39-
13522 (69 FR 12063, March
15, 2004).
Boeing Model 737-300 series airplanes ST00171SE................................. AD 2001-14-10, amendment 39-
12321 (66 FR 36455, July 12,
2001).
Boeing Model 737-700 series airplanes ST09100AC-D, ST09104AC-D, ST09105AC-D, AD 2001-14-12, amendment 39-
ST09106AC-D. 12323 (66 FR 36452, July 12,
2001).
Boeing Model 737-600, -700, -800 Not applicable............................ AD 2003-26-12, amendment 39-
series airplanes and Model 757-200 13411 (69 FR 861, January 7,
and -300 series airplanes. 2004).
Boeing Model 747-100 and -200 series SA8622SW.................................. AD 2001-14-11, amendment 39-
airplanes. 12322 (66 FR 36453, July 12,
2001).
Boeing Model 747-100 and -200 series ST00196SE................................. AD 2001-16-19, amendment 39-
airplanes. 12388 (66 FR 43068, August
17, 2001).
Boeing Model 747-400 series airplanes SA8843SW.................................. AD 2001-14-15, amendment 39-
12326 (66 FR 36447, July 12,
2001).
Boeing Model 747SP series airplanes.. ST09097AC-D............................... AD 2001-14-14, amendment 39-
12325 (66 FR 36449, July 12,
2001).
Boeing Model 757-200 series airplanes SA1727GL.................................. AD 2001-14-01, amendment 39-
12311 (66 FR 36149, July 11,
2001).
Boeing Model 767-200 series airplanes SA4998NM.................................. AD 2001-16-21, amendment 39-
12390 (66 FR 43072, August
17, 2001).
Boeing Model 767-200 series airplanes SA5134NM.................................. AD 2001-16-20, amendment 39-
12389 (66 FR 43066, August
17, 2001).
Boeing Model 767-200 series airplanes ST09022AC-D............................... AD 2001-14-13, amendment 39-
12324 (66 FR 36450, July 12,
2001).
Boeing Model 767-300 series airplanes SA5765NM, SA5978NM........................ AD 2001-16-17, amendment 39-
12386 (66 FR 42937, August
16, 2001).
Boeing Model 767-300 series airplanes SA7019NM-D................................ AD 2001-18-08, amendment 39-
12434 (66 FR 46517,
September 6, 2001).
Boeing Model 767-300 series airplanes ST00118SE................................. AD 2001-14-04, amendment 39-
12314 (66 FR 36699, July 13,
2001).
Boeing Model 767-300 series airplanes ST00157SE................................. AD 2001-16-18, amendment 39-
12387 (66 FR 43070, August
17, 2001).
Boeing Model 767-300 series airplanes ST01869AT-D............................... AD 2002-26-14, amendment 39-
13002 (68 FR 1525, January
13, 2003).
Boeing Model 767-300 series airplanes ST01783AT-D............................... AD 2003-07-15, amendment 39-
13111 (68 FR 18535, April
16, 2003).
Boeing Model 767-200 and -300 series Not applicable............................ AD 2003-14-10, amendment 39-
airplanes. 13229 (68 FR 42583, July 18,
2003; corrected at 68 FR
44385, July 28, 2003).
McDonnell Douglas Model DC-9-51 and SA8026NM.................................. AD 2001-14-02, amendment 39-
DC-9-83 airplanes. 12312 (66 FR 36456, July 12,
2001).
McDonnell Douglas Model DC-10-30 SA8452SW.................................. AD 2001-16-22, amendment 39-
airplanes. 12391 (66 FR 43074, August
17, 2001).
[[Page 39599]]
McDonnell Douglas Model DC-10-30 ST00054SE................................. AD 2001-14-03, amendment 39-
airplanes. 12313 (66 FR 36150, July 11,
2001) (Inadvertently
referenced by the Federal
Register as AD 2001-13-03,
in the Agency Docket Number
heading, on page 36150, in
the third column).
McDonnell Douglas Model MD-11 ST00236LA-D (Santa Barbara Aerospace)..... AD 99-20-08, amendment 39-
airplanes. 11338 (64 FR 52221,
September 28, 1999).
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Relevant Service Information
We have reviewed Boeing Service Bulletin 757-24-0093, dated August
14, 2003 (for Model 757-200 series airplanes); and Boeing Service
Bulletin 757-24-0094, dated April 17, 2003 (for Model 757-300 series
airplanes). The service bulletins describe the following procedures:
For all airplanes, changing the wiring at the P5 and P11
panel assemblies in the flight compartment, at the P36 panel assembly
in the forward cargo compartment, and at the P37 and P70 panel
assemblies in the main electronics compartment.
For all airplanes, installing a new relay at the P36 panel
assembly in the forward cargo compartment and at the P37 panel assembly
in the main electronics compartment.
For certain Model 757-200 series airplanes, installing new
circuit breakers C3090 and C3089 at the P37 and P70 panel assemblies,
respectively, in the main electronics compartment.
For certain Model 757-200 series airplanes and certain
Model 757-300 series airplanes, replacing circuit breakers C311 and
C315 at the P31 and P32 panel assemblies, respectively, in the main
electronics compartment with higher-rated circuit breakers.
For all Model 757-300 series airplanes, installing a relay
connector at the P37 panel assembly and at the P36 panel assembly.
For certain Model 757-300 series airplanes, installing new
wires between the P5 panel assembly in the flight compartment and the
P36 and P37 panel assemblies in the main electronics compartment.
Accomplishing the actions specified in the service information is
intended to adequately address the unsafe condition.
Concurrent Service Information
For certain Model 757-200 series airplanes, Boeing Service Bulletin
757-24-0093 also recommends concurrent accomplishment of Boeing
Component Service Bulletin 233N3209-24-04, Revision 1, dated August 14,
2003. Boeing Component Service Bulletin 233N3209-24-04 describes
procedures for modifying the wiring of the control module assembly for
the electrical systems. The modification includes installing new wiring
and changing the existing wiring of the control module assembly.
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. For this reason, we are proposing this AD,
which would require accomplishing the actions specified in the service
information described previously.
Costs of Compliance
There are about 548 airplanes of the affected design in the
worldwide fleet. This proposed AD would affect about 332 Model 757-200
and 7-300 airplanes of U.S. registry. The following table provides the
estimated costs, at an average labor rate of $80 per hour, for U.S.
operators to comply with this proposed AD. The estimated work hours and
cost of parts in the following table depend on the relay and wiring
configuration of an airplane.
Estimated Costs
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Number of U.S.-
Model Action Work hours Parts Cost per airplane registered Fleet cost
airplanes
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757-200 series airplanes............ Installation.......... 38-46 $2,781-$5,917 $5,821-$9,597 318 $1,851,078-$3,051,
846
Concurrent 3 73-90 313-330 318 99,534-104,940
modification.
757-300 series airplanes............ Installation.......... 22 2,080-4,632 3,840-6,392 14 53,760-89,488
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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
[[Page 39600]]
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 and placed it in the AD docket. 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 Federal Aviation Administration (FAA) amends Sec. 39.13 by
adding the following new airworthiness directive (AD):
Boeing: Docket No. FAA-2006-25326; Directorate Identifier 2006-NM-
081-AD.
Comments Due Date
(a) The FAA must receive comments on this AD action by August
28, 2006.
Affected ADs
(b) None.
Applicability
(c) This AD applies to the Boeing airplanes identified in
paragraphs (c)(1) and (c)(2) of this AD, certificated in any
category.
(1) Model 757-200 series airplanes, as identified in Boeing
Service Bulletin 757-24-0093, dated August 14, 2003.
(2) Model 757-300 series airplanes, as identified in Boeing
Service Bulletin 757-24-0094, dated April 17, 2003.
Unsafe Condition
(d) This AD results from an in-flight entertainment (IFE)
systems review. We are issuing this AD to ensure that the flightcrew
is able to turn off electrical power to the IFE system through
utility bus switches in the flight compartment. The flightcrew's
inability to turn off power to the IFE system during a non-normal or
emergency situation could result in the inability to control smoke
or fumes in the airplane flight deck or cabin.
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.
Installation of Circuit Breakers, Relays, and Wiring
(f) Within 60 months after the effective date of this AD, do the
applicable actions specified in paragraphs (f)(1) through (f)(6) of
this AD, in accordance with the Accomplishment Instructions of
Boeing Service Bulletin 757-24-0093, dated August 14, 2003 (for
Model 757-200 series airplanes); or Boeing Service Bulletin 757-24-
0094, dated April 17, 2003 (Model 757-300 series airplanes), as
applicable.
(1) For all airplanes: Change the wiring at the P5 and P11 panel
assemblies in the flight compartment, at the P36 panel assembly in
the forward cargo compartment, and at the P37 and P70 panel
assemblies in the main electronics compartment. Install a new relay
and relay connector, if applicable, at the P36 panel assembly and at
the P37 panel assembly.
(2) For Model 757-200 series airplanes identified as Group 1 in
Boeing Service Bulletin 757-24-0093, dated August 14, 2003: Install
new circuit breakers C3090 and C3089 at the P37 and P70 panel
assemblies, respectively, in the main electronics compartment.
(3) For Model 757-200 series airplanes identified as Groups 21
and 22 in Boeing Service Bulletin 757-24-0093, dated August 14,
2003: Replace circuit breaker C311 at the P31 panel assembly in the
main electronics compartment with a higher-rated circuit breaker.
(4) For Model 757-200 series airplanes identified as Groups 1
through 20 inclusive and 23 through 40 inclusive in Boeing Service
Bulletin 757-24-0093, dated August 14, 2003: Replace circuit
breakers C311 and C315 at the P31 and P32 panel assemblies,
respectively, in the main electronics compartment with higher-rated
circuit breakers.
(5) For Model 757-300 series airplanes identified as Groups 1
and 4 in Boeing Service Bulletin 757-24-0094, dated April 17, 2003:
Replace circuit breakers C311 and C315 at the P31 and P32 panel
assemblies, respectively, in the main electronics compartment with
higher-rated circuit breakers.
(6) For Model 757-300 series airplanes identified as Groups 1,
2, and 3 in Boeing Service Bulletin 757-24-0094, dated April 17,
2003: Install new wires between the P5 panel assembly in the flight
compartment and the P36 and P37 panel assemblies in the main
electronics compartment.
Concurrent Requirement for Certain Airplanes
(g) For the Model 757-200 series airplanes identified as Groups
8, 9, 12, 15, 20, 21 through 32 inclusive, and 34 through 40
inclusive in Boeing Service Bulletin 757-24-0093, dated August 14,
2003: Prior to or concurrently with accomplishing the actions
specified in paragraph (f) of this AD, modify the wiring of the
control module assembly for the electrical systems, by accomplishing
all of the actions specified in the Accomplishment Instructions of
Boeing Component Service Bulletin 233N3209-24-04, Revision 1, dated
August 14, 2003, as applicable.
Credit for Accomplishment of Previous Service Bulletin
(h) Modification of the control module assembly done before the
effective date of this AD in accordance with Boeing Component
Service Bulletin 233N3209-24-04, dated April 10, 2003, is acceptable
for compliance with the requirements of paragraph (g) of this AD.
Alternative Methods of Compliance (AMOCs)
(i)(1) The Manager, Seattle 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.
(2) Before using any AMOC approved in accordance with Sec.
39.19 on any airplane to which the AMOC applies, notify the
appropriate principal inspector in the FAA Flight Standards
Certificate Holding District Office.
Issued in Renton, Washington, on July 3, 2006.
Kalene C. Yanamura,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. E6-11020 Filed 7-12-06; 8:45 am]
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