14460 Federal Register / Vol. 74, No. 60 / Tuesday, March 31, 2009 / Rules and Regulations 

Issued in Burlington, Massachusetts, on 

March 17, 2009. 

Francis A. Favara, 

Manager, Engine and Propeller Directorate, 

Aircraft Certification Service. 

[FR Doc. E9–6749 Filed 3–30–09; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2007–0074; Directorate 

Identifier 2007–NM–151–AD; Amendment 

39–15863; AD 2009–07–04] 

RIN 2120–AA64 

Airworthiness Directives; McDonnell 

Douglas Model MD–90–30 Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for certain 

McDonnell Douglas Model MD–90–30 

airplanes. This AD requires modifying 

the auxiliary hydraulic power system 

(including doing all applicable related 

investigative and corrective actions). 

This AD results from fuel system 

reviews conducted by the manufacturer, 

as well as reports of shorted wires in the 

right wheel well and evidence of arcing 

on the power cables of the auxiliary 

hydraulic pump. We are issuing this AD 

to prevent shorted wires or electrical 

arcing at the auxiliary hydraulic pump, 

which could result in a fire in the wheel 

well; and 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 becomes effective May 

5, 2009. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in the AD 

as of May 5, 2009. 

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. 

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 (telephone 800–647–5527) 

is the 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. 

SUPPLEMENTARY INFORMATION: 

Discussion 

The FAA issued a supplemental 

notice of proposed rulemaking (NPRM) 

to amend 14 CFR part 39 to include an 

AD that would apply to certain 

McDonnell Douglas Model MD–90–30 

airplanes. That supplemental NPRM 

was published in the Federal Register 

on December 19, 2008 (73 FR 77555). 

That supplemental NPRM proposed to 

require modifying the auxiliary 

hydraulic system (including doing all 

applicable related investigative and 

corrective actions). 

Comments 

We provided the public the 

opportunity to participate in the 

development of this AD. No comments 

have been received on the supplemental 

NPRM or on the determination of the 

cost to the public. 

Conclusion 

We have carefully reviewed the 

available data and determined that air 

safety and the public interest require 

adopting the AD as proposed in the 

supplemental NPRM. 

Costs of Compliance 

There are about 110 airplanes of the 

affected design in the worldwide fleet. 

This AD affects about 16 airplanes of 

U.S. registry. The actions take between 

3 and 7 work-hours per airplane, 

depending on the configuration, at an 

average labor rate of $80 per work-hour. 

Required parts cost up to $5,343 per 

airplane. Based on these figures, the 

estimated cost of the AD for U.S. 

operators is up to $94,448, or $5,903 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 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); 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 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, 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: 


tjames on PRODPC61 with RULES
Federal Register / Vol. 74, No. 60 / Tuesday, March 31, 2009 / Rules and Regulations 14461 

Authority: 49 U.S.C. 106(g), 40113, 44701. 

§ 39.13 [Amended] 

■ 2. The Federal Aviation 

Administration (FAA) amends § 39.13 

by adding the following new 

airworthiness directive (AD): 

2009–07–04 McDonnell Douglas: 

Amendment 39–15863. Docket No. 

FAA–2007–0074; Directorate Identifier 

2007–NM–151–AD. 

Effective Date 

(a) This AD becomes effective May 5, 2009. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to McDonnell Douglas 

Model MD–90–30 airplanes, certificated in 

any category; as identified in Boeing Alert 

Service Bulletin MD90–29A021, Revision 1, 

dated August 29, 2008. 

Unsafe Condition 

(d) This AD results from fuel system 

reviews conducted by the manufacturer, as 

well as reports of shorted wires in the right 

wheel well and evidence of arcing on the 

power cables of the auxiliary hydraulic 

pump. We are issuing this AD to prevent 

shorted wires or electrical arcing at the 

auxiliary hydraulic pump, 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 

(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. 

Modification 

(f) 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 

by accomplishing all applicable actions 

specified in the Accomplishment 

Instructions of Boeing Alert Service Bulletin 

MD90–29A021, Revision 1, dated August 29, 

2008. Do all applicable related investigative 

and corrective actions before further flight. 

Alternative Methods of Compliance 

(AMOCs) 

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

Certification Office, FAA, 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; has the authority to approve 

AMOCs for this AD, if requested in 

accordance with the procedures found in 14 

CFR 39.19. 

(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 appropriate principal inspector 

(PI) in the FAA Flight Standards District 

Office (FSDO), or lacking a PI, your local 

FSDO. 

Material Incorporated by Reference 

(h) You must use Boeing Alert Service 

Bulletin MD90–29A021, Revision 1, dated 

August 29, 2008, 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 

this service information 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, Transport Airplane 

Directorate, 1601 Lind Avenue SW., Renton, 

Washington. For information on the 

availability of this material at the FAA, call 

425–227–1221 or 425–227–1152. 

(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 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 

18, 2009. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. E9–6752 Filed 3–30–09; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2009–0007; Directorate 

Identifier 2008–CE–072–AD; Amendment 

39–15867; AD 2009–07–08] 

RIN 2120–AA64 

Airworthiness Directives; Piper 

Aircraft, Inc. Models PA–46–350P and 

PA–46R–350T Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for certain 

Piper Aircraft, Inc. Models PA–46–350P 

and PA–46R–350T airplanes. This AD 

requires you to inspect the 35-amp and 

250-amp current limiters to verify they 

are installed in the proper locations and 

correct the installation if the current 

limiters are not installed in the proper 

locations. This AD also limits operation 

to ‘‘only under day visual flight rules 

(VFR)’’ until the current limiter 

installation is inspected and corrected. 

This AD results from three reports of 

incorrectly installed current limiters. 

We are issuing this AD to detect and 

correct incorrect installation of 35-amp 

and 250-amp current limiters, which 

could result in failure of the 35-amp 

current limiter if installed in the 250- 

amp location. This failure could lead to 

a total loss of electrical power. 

DATES: This AD becomes effective on 

May 5, 2009. 

On May 5, 2009, the Director of the 

Federal Register approved the 

incorporation by reference of certain 

publications listed in this AD. 

ADDRESSES: For service information 

identified in this AD, contact Piper 

Aircraft, Inc., 2926 Piper Drive, Vero 

Beach, Florida 32960; telephone: (772) 

978–6573; Internet: http:// 

www.newpiper.com/company/ 

publications.asp. 

To view the AD docket, go to U.S. 

Department of Transportation, Docket 

Operations, M–30, West Building 

Ground Floor, Room W12–140, 1200 

New Jersey Avenue, SE., Washington, 

DC 20590, or on the Internet at http:// 

www.regulations.gov. The docket 

number is FAA–2009–0007; Directorate 

Identifier 2008–CE–072–AD. 

FOR FURTHER INFORMATION CONTACT: John 

Lee, Aerospace Engineer, One Crown 

Center, 1895 Phoenix Blvd., Suite 450, 

Atlanta, Georgia 30349; telephone: (770) 

994–6736; fax: (770) 703–6097. 

SUPPLEMENTARY INFORMATION: 

Discussion 

On January 7, 2009, we issued a 

proposal to amend part 39 of the Federal 

Aviation Regulations (14 CFR part 39) to 

include an AD that would apply to 

certain Piper Aircraft, Inc. Models PA– 

46–350P and PA–46R–350T airplanes. 

This proposal was published in the 

Federal Register as a notice of proposed 

rulemaking (NPRM) on January 15, 2009 

(74 FR 2425). The NPRM proposed to 

require an inspection to verify the 35- 

amp and 250-amp current limiters are 

installed in the proper locations and 

correct the installation if the current 

limiters are not installed in the proper 

locations. The NPRM also proposed to 

limit operation to only under day VFR 

until the current limiter installation is 

inspected and corrected. 


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