Federal Register / Vol. 70, No. 68 / Monday, April 11, 2005 / Rules and Regulations 18285

otherwise. The Director of the Federal 

Register approves the incorporation by 

reference of this document in accordance 

with 5 U.S.C. 552(a) and 1 CFR part 51. To 

get copies of the service information, go to 

Dassault Falcon Jet, P.O. Box 2000, South 

Hackensack, New Jersey 07606. To view the 

AD docket, go to the Docket Management 

Facility, U.S. Department of Transportation, 

400 Seventh Street SW., room PL–401, Nassif 

Building, Washington, DC. To review copies 

of the service information, go to 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 March 

31, 2005. 

Kalene C. Yanamura, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service.

[FR Doc. 05–6911 Filed 4–8–05; 8:45 am] 

BILLING CODE 4910–13–P

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2005–20885; Directorate 

Identifier 2005–NM–050–AD; Amendment 

39–14049; AD 2005–07–24] 

RIN 2120–AA64 

Airworthiness Directives; Boeing 

Model 777–200 and –300 Series 

Airplanes Equipped With Rolls Royce 

Model RB211 TRENT 800 Engines

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT).

ACTION: Final rule; request for 

comments. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for certain 

Boeing Model 777–200 and –300 series 

airplanes. This AD requires inspecting 

the thrust reversers for damage of the 

insulation blankets, the inner wall, and 

the compression and drag link fittings; 

and repair if necessary. This AD also 

requires applying sealant to certain 

areas of the thrust reverser. This AD is 

prompted by two reports of thrust 

reverser failure; investigation revealed 

that the inner wall of the thrust 

reversers had collapsed from exposure 

to hot engine core compartment air. We 

are issuing this AD to prevent failure of 

a thrust reverser and adjacent 

components and their consequent 

separation from the airplane, which 

could result in a rejected takeoff (RTO) 

and cause asymmetric thrust and 

consequent loss of control of the 

airplane during reverse thrust operation. 

If an RTO does not occur, these 

separated components could cause 

structural damage to the airplane or 

damage to other airplanes and possible 

injury to people on the ground.

DATES: Effective April 26, 2005. 

The incorporation by reference of 

certain publications listed in the AD is 

approved by the Director of the Federal 

Register as of April 26, 2005. 

We must receive comments on this 

AD by June 10, 2005.

ADDRESSES: Use one of the following 

addresses to submit comments on this 

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. 

For service information identified in 

this AD, contact Boeing Commercial 

Airplanes, P.O. Box 3707, Seattle, 

Washington 98124–2207. 

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–

20885; the directorate identifier for this 

docket is 2005–NM–050–AD. 

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 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.

FOR FURTHER INFORMATION CONTACT:

Margaret Langsted, Aerospace Engineer, 

Propulsion Branch, ANM–140S, FAA, 

Seattle Aircraft Certification Office, 

1601 Lind Avenue, SW., Renton, 

Washington 98055–4056; telephone 

(425) 917–6500; fax (425) 917–6590.

SUPPLEMENTARY INFORMATION: We have 

received two reports indicating failure 

of the thrust reversers during takeoff on 

certain Boeing Model 777–200 and –300 

series airplanes. Investigation of both 

incidents revealed that the composite 

inner wall of the thrust reverser 

collapsed as a result of the migration of 

hot engine core compartment air 

underneath the insulation blankets, 

which overheated the composite 

structure. In the second incident, the 

outer sleeve of the primary nozzle had 

detached from the airplane and 

impacted an automobile on the ground, 

causing significant damage. 

Investigation of the first incident 

revealed that debris from the right 

engine had departed the airplane and 

was left on the runway. The flightcrew 

was not aware of the failure until arrival 

at the destination airport. Extensive 

damage was found to the inner wall of 

the thrust reverser, with large sections 

of the composite structure missing. Both 

failures occurred on airplanes that had 

each accumulated more than 6,000 total 

flight cycles. Subsequent inspection of 

the thrust reversers on airplanes that 

had accumulated between 6,000 and 

9,000 total flight cycles indicated areas 

of delamination and annealed 

compression pads of the inner wall. The 

cause of the delamination is exposure to 

hot engine core compartment air, which 

can also cause thermal damage to the 

compression and drag link fittings. 

These conditions, if not corrected, could 

result in a rejected takeoff (RTO) and 

cause asymmetric thrust and consequent 

loss of control of the airplane during 

reverse thrust operation. If an RTO does 

not occur, these separated components 

could cause structural damage to the 

airplane or damage to other airplanes 

and possible injury to people on the 

ground.

Relevant Service Information 

We have reviewed Boeing Alert 

Service Bulletin 777–78A0059, dated 

February 24, 2005. The service bulletin 

describes procedures for one-time 

detailed and special detailed 

inspections of the thrust reversers, as 

applicable, for damage of the insulation 

blankets, inner wall, and compression 

and drag link fittings; and repair if 

necessary. The compliance times for the 

inspections range from 3 months to 24 

months, depending on the number of 

total flight cycles on the airplane. The 

damage includes over-temperature 

conditions such as brown to blackened 

scorching and disbonding. The repair 

includes repair or replacement of any 

18286 Federal Register / Vol. 70, No. 68 / Monday, April 11, 2005 / Rules and Regulations 

damaged insulation blankets with new 

blankets, and replacement of any 

damaged fittings with new fittings. The 

service bulletin recommends reporting 

the inspection schedule and results to 

Boeing. 

The service bulletin also recommends 

prior or concurrent accomplishment of 

Boeing Special Attention Service 

Bulletin 777–78–0060, dated February 

24, 2005. That service bulletin describes 

procedures for applying sealant to the 

seams of the thrust reverser insulation 

blankets and around the HP3 ducts, and 

insulating and sealing the compression 

pad fittings. 

Accomplishing the actions specified 

in the service information is intended to 

adequately address the unsafe 

condition. 

FAA’s Determination and Requirements 

of This AD 

The unsafe condition described 

previously is likely to exist or develop 

on other airplanes of the same type 

design. Therefore, we are issuing this 

AD to prevent failure of a thrust reverser 

and adjacent components and their 

consequent separation from the 

airplane, which could result in a 

rejected takeoff (RTO) and cause 

asymmetric thrust and consequent loss 

of control of the airplane during reverse 

thrust operation. If an RTO does not 

occur, these separated components 

could cause structural damage to the 

airplane or damage to other airplanes 

and possible injury to people on the 

ground. This AD requires accomplishing 

the actions specified in the service 

information described previously, 

except as discussed under ‘‘Differences 

Between the AD and the Service 

Information.’’

Differences Between the AD and the 

Service Information 

You should note that, although 

Boeing Alert Service Bulletin 777–

78A0059 describes procedures for 

reporting information to the 

manufacturer, this AD will not require 

those actions. We do not need this 

information. 

Boeing Alert Service Bulletin 777–

78A0059 recommends prior or 

concurrent accomplishment of Boeing 

Special Attention Service Bulletin 777–

78–0060; however, this AD requires 

accomplishment of that service bulletin 

immediately after each inspection to 

prevent further damage. 

The service bulletins specify that you 

may contact the manufacturer for repair 

or replacement instructions, but this AD 

requires you to repair or replace in one 

of the following ways: 

• Using a method that we approve; or 

• Using data that meet the 

certification basis of the airplane that 

have been approved by an Authorized 

Representative for the Boeing Delegation 

Option Authorization Organization who 

has been authorized by the FAA to make 

those findings. 

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–

2005–20885; Directorate Identifier 

2005–NM–050–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 can review the 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.

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 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

■ Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA amends 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.

§ 39.13 [Amended]

■ 2. The FAA amends § 39.13 by adding 

the following new airworthiness 

directive (AD):

2005–07–24 Boeing: Amendment 39–14049. 

Docket No. FAA–2005–20885; 

Directorate Identifier 2005–NM–050–AD. 

Effective Date 

(a) This AD becomes effective April 26, 

2005. 

Federal Register / Vol. 70, No. 68 / Monday, April 11, 2005 / Rules and Regulations 18287

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to Boeing Model 777–

200 and –300 series airplanes; certificated in 

any category; equipped with Rolls Royce 

Model RB211 TRENT 800 engines; as 

identified in Boeing Alert Service Bulletin 

777–78A0059, dated February 24, 2005. 

Unsafe Condition 

(d) This AD was prompted by two reports 

of thrust reverser failures; investigation 

revealed that the inner wall of the thrust 

reversers had collapsed from exposure to hot 

engine core compartment air. The FAA is 

issuing this AD to prevent failure of a thrust 

reverser and adjacent components and their 

consequent separation from the airplane, 

which could result in a rejected takeoff (RTO) 

and cause asymmetric thrust and consequent 

loss of control of the airplane during reverse 

thrust operation. If an RTO does not occur, 

these separated components could cause 

structural damage to the airplane or damage 

to other airplanes and possible injury to 

people on the ground. 

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.

Inspections 

(f) Accomplish one-time detailed and 

special detailed inspections, as applicable, of 

the thrust reversers for damage of the 

insulation blankets, inner wall, and 

compression and drag link fittings, in 

accordance with the Accomplishment 

Instructions of Boeing Alert Service Bulletin 

777–78A0059, dated February 24, 2005. 

Accomplish the inspection at the applicable 

compliance time specified in paragraph 1.E. 

‘‘Compliance’’ of the service bulletin; except, 

where the service bulletin specifies a 

compliance time relative to the date after the 

release of the service bulletin, this AD 

requires compliance relative to the effective 

date of this AD. 

Repair/Replacement 

(g) If any damage is found during any 

inspection required by this AD: Before 

further flight, do applicable repairs and 

replace damaged fittings with new fittings, in 

accordance with the Accomplishment 

Instructions of Boeing Alert Service Bulletin 

777–78A0059, dated February 24, 2005. 

Where the service bulletin specifies to 

contact Boeing for appropriate action, before 

further flight, do applicable repairs and 

replace damaged fittings with new fittings in 

accordance with a method approved by the 

Manager, Seattle Aircraft Certification Office 

(ACO), FAA; or in accordance with data 

meeting the certification basis of the airplane 

approved by an Authorized Representative 

for the Boeing Delegation Option 

Authorization (DOA) Organization who the 

Manager, Seattle ACO, has authorized to 

make this finding. For a repair method to be 

approved by the Manager, Seattle ACO, as 

required by this paragraph, the Manager’s 

approval letter must specifically reference 

this AD. 

Application of Sealant 

(h) Before further flight after accomplishing 

the inspection and any applicable repair, as 

required by paragraphs (f) and (g) of this AD: 

Apply sealant to the seams of the thrust 

reverser insulation blankets and around the 

HP3 ducts, and insulate and seal the 

compression pad fittings, in accordance with 

the Accomplishment Instructions of Boeing 

Special Attention Service Bulletin 777–78–

0060, dated February 24, 2005. 

No Reporting 

(i) Although Boeing Alert Service Bulletin 

777–78A0059, dated February 24, 2005, 

specifies reporting certain information to 

Boeing, this AD does not require that action. 

Alternative Methods of Compliance 

(AMOCs) 

(j)(1) The Manager, Seattle ACO, FAA, has 

the authority to approve AMOCs for this AD, 

if requested in accordance with the 

procedures found in 14 CFR 39.19. 

(2) An AMOC that provides an acceptable 

level of safety may be used for any repair 

required by this AD, if it is approved by an 

Authorized Representative for the Boeing 

DOA Organization who has been authorized 

by the Manager, Seattle ACO, to make those 

findings. For a repair method to be approved, 

the repair must meet the certification basis of 

the airplane and the approval must 

specifically refer to this AD. 

Material Incorporated by Reference 

(k) You must use Boeing Alert Service 

Bulletin 777–78A0059, dated February 24, 

2005; and Boeing Special Attention Service 

Bulletin 777–78-0060, dated February 24, 

2005; as applicable; to perform the actions 

that are required by this AD, unless the AD 

specifies otherwise. The Director of the 

Federal Register approves the incorporation 

by reference of these documents in 

accordance with 5 U.S.C. 552(a) and 1 CFR 

part 51. To get copies of the service 

information, contact Boeing Commercial 

Airplanes, P.O. Box 3707, Seattle, 

Washington 98124–2207. To view the AD 

docket go to the Docket Management Facility, 

U.S. Department of Transportation, 400 

Seventh Street SW., room PL–401, Nassif 

Building, Washington, DC. To review copies 

of the service information, go to 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 March 

31, 2005. 

Kalene C. Yanamura, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service.

[FR Doc. 05–6903 Filed 4–8–05; 8:45 am] 

BILLING CODE 4910–13–P

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2004–19227; Directorate 

Identifier 2003–NM–95–AD; Amendment 39–

14050; AD 2005–07–25] 

RIN 2120–AA64 

Airworthiness Directives; Airbus Model 

A300 B2 and B4 Series Airplanes; 

Model A300 B4–600, A300 B4–600R, 

A300 C4–605R Variant F, and A300 F4–

600R (Collectively Called A300–600) 

Series Airplanes; and Model A310 

Series Airplanes

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT).

ACTION: Final rule.

SUMMARY: The FAA is superseding an 

existing airworthiness directive (AD), 

which applies to certain Airbus Model 

A300 B2 and B4 series airplanes; Model 

A300 B4–600, A300 B4–600R, A300 C4–

605R Variant F, and A300 F4–600R 

(collectively called A300–600) series 

airplanes; and Model A310 series 

airplanes. That AD currently requires 

replacement of the transformer rectifier 

units (TRUs) in the avionics 

compartment with new, improved 

TRUs. This new AD requires 

replacement of the TRUs installed 

according to the existing AD with 

different TRUs that are improved. This 

AD is prompted by analysis that has 

revealed that certain diodes installed in 

the TRUs are the main factor 

contributing to the continuing TRU 

failures. We are issuing this AD to 

prevent failure of the TRUs. Failure of 

multiple TRUs could result in loss of 

the thrust reversers, autothrottle, flaps, 

and various systems (wing/cockpit 

window anti-ice, trim tank pumps, and 

windshield wipers) on the airplane; or 

display of incorrect information to the 

flightcrew.

DATES: This AD becomes effective May 

16, 2005. 

The incorporation by reference of 

certain publications listed in the AD is 

approved by the Director of the Federal 

Register as of May 16, 2005.

ADDRESSES: For service information 

identified in this AD, contact Airbus, 1 

Rond Point Maurice Bellonte, 31707 

Blagnac Cedex, France. 

Docket: The AD docket contains the 

proposed AD, comments, and any final 

disposition. 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