.' 

### ~ 

# AIRBORNE EXPRESS.

June 19,2002 

# RECEIVED JUN 

# 242002 

# ANM -114

J 

## Federal Aviation Administration

Transport Airplane Directorate, ANM-114 1601 Lind Avenue, SW Renton, Washington 98055-4056

Attention: Rules Docket No. 2002-NM-12-AD

Subject: Notice of Proposed Rulemaking, Static Inverters Installed on Certain

Boeing Airplanes; Federal Register, May 17,2002, Page 35057

Ladies/Gentlemen:

Airborne Express submits the following comments in response to the Notice of Proposed Rulemaking entitled Airworthiness Directives; Boeing Model 737-300, -400, -500, -600, -700, -700C, -800, -900; 747-400; 757; 767; and 777 Series Airplanes. Docket No. 2002- NM-12-AD.

Airborne Express finds Table I of the proposed rule confusing. The leaders in the Model/series block imply that there is a one-to-one relationship between the airplane model and inverter part number. For example, it could be interpreted that the only 767s applicable are 767s that are equipped with static inverter part number 1-002-0 I02-1 000. We do not think that is the meaning of this table. Airborne Express requests the applicability be changed to eliminate this confusion. Ifthe leaders in the Model/series block are omitted and the airplane models are separated from each other with semicolons, this may reduce the confusion. See attached for example.

Regards, 

# ~~e1~

Manager, Quality Assurance

Airborne Air Park. 145 Hunter Drive. WilminglOn.OH 45177 • (937) 382-559t

### 35058 Federal Register / Vol. 67. No. 96/ Friday, May 17. 2002/ Proposed Rules

Cost Impact
There are approximately 3.832 airplanes ofthe affected design in the worldwide fleet. The FAA estimates that 1,882 airplanes of U,S. registry would be affected by this proposed AD. The cost impact discussed in ADs is based on assumptions that no operator has yet accomplished any of the proposed requirements. and that no operator would accomplish those actions in the future if the proposed AD
were not adopted, However, the FAA has been advised that manufacturer warranty remedies are available for the cost of modified replacement parts and labor associated with accomplishing the actions specified by this proposed AD. Therefore. the economic cost impact of this proposed AD on U.S. operators may be minimal. The cost impact figures discussed in AD rulemaking actions represent only the time necessary to perform the specific actions actually required by the AD. These figures typically do not include incidental costs. such as the time required to gain
access and close up. planning time. or time necessitated by other administrative actions. Regulatory Impact The regulations proposed herein 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. Therefore. it is determined that this proposal would not have federalism implications under Executive Order 13132. For the reasons discussed above. I certify that this proposed regulation (lJ 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) if promulgated. 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. A copy of the draft regulatory evaluation prepared for this action is contained in the Rules Docket. A copy of it may be obtained by contacting the Rules Docket at the

TABLE I.-ApPLICABILITY location provided under the caption ADDRESSES. List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety. Safety. The Proposed Amendment Accordingly, pursuant to the authority delegated to me by the Administrator. the Federal Aviation Administration proposes to amend part 39 of the Federal Aviation Regulations (14 eFR part 391 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. Section 39.13 is amended bv adding the following new airwo;thiness directive: Hoeing:Docket2002NM-12AD. Applicability: The following airplanes, certificated in any category:

Model/series EquippedwithAvionicInstrumentsJnc.static invertershaving any ofthe following

part numbers (PINs)- 1--{)02-0102--{)265 1--{)02--{)102--{)714 1-111-0102-0714 1-002--{)102-1000 Whichcorrespond 10 BoeingP/NsS262TOO4-5 S282TOO4-7 S262T004-8 S262T004-10 

# Deld~.
Note t: This ADapplies to each airplane identified in the preceding applicability provision, regardless ofwhether it has been modified. altered. orrepaired in the area subject to the requirements ofthis AD.For airplanes that have been modified, altered. or repaired so that the performance ofthe requirements ofthis AUis affected. the owner/operator must request approval foran alternative method ofcompliance in accordance with paragraph (clofthis AD. The request should include an assessment of the effectofthe modification, alteration, or repair on the unsafe condition addressodby this AD;and, ifthe unsafe condition has not been eliminated. the request should include specific proposed actions to address it. Compliance: Required as indicated. unless accomplished previously. To prevent a standby static inverter from overheating. which could result in smoke in the flightdeckand cabin and loss ofthe electrical standby power system. accomplish the following: Modification (a)Within 18months afterthe effective dale ofthis AD:Modify the static inverterby relocating resistorR170ofthe static inverter bridge assembly and reidentifying the static inverter to indicate the new modification level. in accordance with BoeingService Letters 737-SL-24-165, 747-SL-24-Q58. 757-SL-24-Q69. 767-SL-24-047. and 777- SL-24-028; dated October3. 2000. Note 2: The Boeingservice leHersreferto Avionic Instruments Inc. Service Bulletin 1- 002-QI02-1000-24-24, dated July 19, 1999.
as an additional source ofservice information forthe modification required by paragraph (a)ofthis AD. SpaN! Parts (b)Asofthe effectivedate ofthis AD.no person may install, on any airplane. a static inverter having a part number listed in the applicability section ofthis AD.unless the static inverter has been modified in accordance with the requirements ofthis AD. Alternative Methods ofCompliance (c)An alternative method ofcompliance or adjustment ofthe compliance time that provides an acceptable levelofsafetymay be used ifapproved by the Manager. Seattle AircraftCertification Office(ACOI.FAA. Operators shall submit their requests through
an appropriat6 FAAPrincipal Maintenanc6 Inspector. who may add comments and then send itto the Manager.Seattle ACo. Note 3: Informationconcerning the existence ofapproved alternative methods of compliance with this AD,ifany. maybe obtained fromthe SeattleACO. Special flight Permits (d) Spedal flight permits maybe issued in accordance with sections 21.197and 21.199 ofthe Federal Aviation Regulations (14CFR 21.197 and 21.199)to operate the airplano 10 a location where the requirements ofthis AD
can be accomplished. Issued in Renton, Washington. on May 10, 2002. Ali Bahrami. Acting Manager. Transport Airplane Directorate. Aircraft Certification Service. IFRDoc.02-12323 Filed 5-16-02; 8:45ami

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