This section of the FEDERAL REGISTER

contains regulatory documents having general

applicability and legal effect, most of which

are keyed to and codified in the Code of

Federal Regulations, which is published under

50 titles pursuant to 44 U.S.C. 1510.

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Rules and Regulations Federal Register

63039 

Vol. 75, No. 198 

Thursday, October 14, 2010 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–0554; Directorate 

Identifier 2010–NM–082–AD; Amendment 

39–16476; AD 2010–21–16] 

RIN 2120–AA64 

Airworthiness Directives; McDonnell 

Douglas Corporation Model MD–90–30 

Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: We are superseding an 

existing airworthiness directive (AD) for 

the products listed above. That AD 

currently requires modifying the 

auxiliary hydraulic power system 

(including doing all applicable related 

investigative and corrective actions). 

This new AD requires these same 

actions, using corrected service 

information. This AD was prompted by 

fuel system reviews conducted by the 

manufacturer, as well as reports of 

electrically shorted wires in the right 

wheel well and evidence of arcing on 

the auxiliary hydraulic pump power 

cables, which are routed within the tire 

burst area. We are issuing this AD to 

prevent electrically shorted wires or 

arcing at the auxiliary hydraulic pump 

power cables, which could result in a 

fire in the wheel well. We are also 

issuing this AD to reduce the potential 

of an ignition source adjacent to the fuel 

tanks, which, in combination with 

flammable fuel vapors, could result in a 

fuel tank explosion and consequent loss 

of the airplane. 

DATES: This AD is effective November 

18, 2010. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in the AD 

as of November 18, 2010. 

ADDRESSES: For service information 

identified in this AD, contact Boeing 

Commercial Airplanes, Attention: Data 

& Services Management, 3855 

Lakewood Boulevard, MC D800–0019, 

Long Beach, California 90846–0001; 

telephone 206–544–5000, extension 2; 

fax 206–766–5683; e-mail 

dse.boecom@boeing.com; Internet 

https://www.myboeingfleet.com. You 

may review copies of the referenced 

service information at the FAA, 

Transport Airplane Directorate, 1601 

Lind Avenue, SW., Renton, Washington. 

For information on the availability of 

this material at the FAA, call 425–227– 

1221. 

Examining the AD Docket 

You may examine the AD docket on 

the Internet at http:// 

www.regulations.gov; or in person at the 

Docket Management Facility between 

9 a.m. and 5 p.m., Monday through 

Friday, except Federal holidays. The AD 

docket contains this AD, the regulatory 

evaluation, any comments received, and 

other information. The address for the 

Docket Office (phone: 800–647–5527) is 

Document Management Facility, U.S. 

Department of Transportation, Docket 

Operations, M–30, West Building 

Ground Floor, Room W12–140, 1200 

New Jersey Avenue, SE., Washington, 

DC 20590. 

FOR FURTHER INFORMATION CONTACT: Ken 

Sujishi, Aerospace Engineer, Cabin 

Safety/Mechanical and Environmental 

Systems Branch, ANM–150L, FAA, Los 

Angeles Aircraft Certification Office, 

3960 Paramount Boulevard, Lakewood, 

California 90712–4137; telephone (562) 

627–5353; fax (562) 627–5210; e-mail 

ken.sujishi@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Discussion 

We issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to supersede airworthiness 

directive (AD) 2009–07–04, amendment 

39–15863 (74 FR 14460, March 31, 

2009). That AD applies to the specified 

products. The NPRM published in the 

Federal Register on June 28, 2010 (75 

FR 36577). That NPRM proposed to 

continue to require modifying the 

auxiliary hydraulic power system 

(including doing all applicable related 

investigative and corrective actions), 

using corrected service information. 

Comments 

We gave the public the opportunity to 

participate in developing this AD. We 

received no comments on the NPRM or 

on the determination of the cost to the 

public. 

Conclusion 

We reviewed the relevant data and 

determined that air safety and the 

public interest require adopting the AD 

as proposed. 

Costs of Compliance 

We estimate that this AD affects 21 

airplanes of U.S. registry. We estimate 

the following costs to comply with this 

AD: 

ESTIMATED COSTS

Action Labor cost Parts cost Cost per product Cost on U.S. operators 

Modification .............. Between 4 and 11 work-hours × $85 per 

hour = Between $340 and $935.

Up to $4,870 ............ Between $5,210 and 

$5,805.

Between $109,410 and 

$121,905. 

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 


emcdonald on DSK2BSOYB1PROD with RULES
63040 Federal Register / Vol. 75, No. 198 / Thursday, October 14, 2010 / Rules and Regulations 

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 this AD: 

(1) Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866, 

(2) Is not a ‘‘significant rule’’ under 

DOT Regulatory Policies and Procedures 

(44 FR 11034, February 26, 1979), 

(3) Will not affect intrastate aviation 

in Alaska, and 

(4) 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. 

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 

removing airworthiness directive (AD) 

2009–07–04, Amendment 39–15863 (74 

FR 14460, March 31, 2009), and adding 

the following new AD: 

2010–21–16 McDonnell Douglas 

Corporation: Amendment 39–16476; 

Docket No. FAA–2010–0554; Directorate 

Identifier 2010–NM–082–AD. 

Effective Date 

(a) This airworthiness directive (AD) is 

effective November 18, 2010. 

Affected ADs 

(b) This AD supersedes AD 2009–07–04, 

Amendment 39–15863. 

Applicability 

(c) This AD applies to McDonnell Douglas 

Corporation Model MD–90–30 airplanes, 

certificated in any category; as identified in 

Boeing Alert Service Bulletin MD90–29A021, 

Revision 2, dated March 16, 2010. 

Subject 

(d) Air Transport Association (ATA) of 

America Code 29: Hydraulic Power. 

Unsafe Condition 

(e) This AD results from fuel system 

reviews conducted by the manufacturer, as 

well as reports of electrically shorted wires 

in the right wheel well and evidence of 

arcing on the auxiliary hydraulic pump 

power cables, which are routed within the 

tire burst area. The Federal Aviation 

Administration is issuing this AD to prevent 

electrically shorted wires or arcing at the 

auxiliary hydraulic pump power cables, 

which could result in a fire in the wheel 

well. We are also issuing this AD to reduce 

the potential of an ignition source adjacent to 

the fuel tanks, which, in combination with 

flammable fuel vapors, could result in a fuel 

tank explosion and consequent loss of the 

airplane. 

Compliance 

(f) You are responsible for having the 

actions required by this AD performed within 

the compliance times specified, unless the 

actions have already been done. 

Replacement 

(g) Within 18 months after the effective 

date of this AD, modify the auxiliary 

hydraulic power system, and do all 

applicable related investigative and 

corrective actions, in accordance with the 

Accomplishment Instructions of Boeing Alert 

Service Bulletin MD90–29A021, Revision 2, 

dated March 16, 2010. Do all applicable 

related investigative and corrective actions 

before further flight. 

Alternative Methods of Compliance 

(AMOCs) 

(h)(1) The Manager, Los Angeles Aircraft 

Certification Office, FAA, has the authority to 

approve AMOCs for this AD, if requested 

using the procedures found in 14 CFR 39.19. 

Send information to ATTN: Ken Sujishi, 

Aerospace Engineer, Cabin Safety/ 

Mechanical and Environmental Systems 

Branch, ANM–150L, FAA, Los Angeles 

Aircraft Certification Office, 3960 Paramount 

Boulevard, Lakewood, California 90712– 

4137; telephone (562) 627–5353; fax (562) 

627–5210. 

(2) To request a different method of 

compliance or a different compliance time 

for this AD, follow the procedures in 14 CFR 

39.19. Before using any approved AMOC on 

any airplane to which the AMOC applies, 

notify your principal maintenance inspector 

(PMI) or principal avionics inspector (PAI), 

as appropriate, or lacking a principal 

inspector, your local Flight Standards District 

Office. The AMOC approval letter must 

specifically reference this AD. 

Related Information 

(i) For more information about this AD, 

contact Ken Sujishi, Aerospace Engineer, 

Cabin Safety/Mechanical and Environmental 

Systems Branch, ANM–150L, FAA, Los 

Angeles Aircraft Certification Office, 3960 

Paramount Boulevard, Lakewood, California 

90712–4137; telephone (562) 627–5353; fax 

(562) 627–5210; e-mail ken.sujishi@faa.gov. 

Material Incorporated by Reference 

(j) You must use the service information 

contained in Boeing Alert Service Bulletin 

MD90–29A021, Revision 2, dated March 16, 

2010, to do the actions required by this AD, 

unless the AD specifies otherwise. 

(1) The Director of the Federal Register 

approved the incorporation by reference of 

Boeing Alert Service Bulletin MD90–29A021, 

Revision 2, dated March 16, 2010, under 5 

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

(2) For service information identified in 

this AD, contact Boeing Commercial 

Airplanes, Attention: Data & Services 

Management, 3855 Lakewood Boulevard, MC 

D800–0019, Long Beach, California 90846– 

0001; telephone 206–544–5000, extension 2; 

fax 206–766–5683; e-mail 

dse.boecom@boeing.com; Internet https:// 

www.myboeingfleet.com. 

(3) You may review copies of the service 

information at the FAA, 1601 Lind Avenue, 

SW., Renton, Washington. For information 

on the availability of this material at the 

FAA, call 425–227–1221. 

(4) You may also review copies of the 

service information that is incorporated by 

reference at the National Archives and 

Records Administration (NARA). For 

information on the availability of this 

material at an NARA facility, 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 October 

1, 2010. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2010–25440 Filed 10–13–10; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–0672; Directorate 

Identifier 2010–NM–047–AD; Amendment 

39–16473; AD 2010–21–13] 

RIN 2120–AA64 

Airworthiness Directives; McDonnell 

Douglas Corporation Model DC–10–10, 

DC–10–10F, DC–10–30, DC–10–30F 

(KDC–10), DC–10–40, and DC–10–40F 

Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 


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