### Federal Register/Vol. 73, No. 175/Tuesday, September 9, 2008/Rules and Regulations 52203

balance land forcracks in accordance with Rolls~RoyceRB211Propulsion System Alert Non Modification Service Bulletin RB.211- 72-AF:l13. dated February 22. 2007 section 3 AC1;OmplishmentInstructions. Engines on which cracldng is found should berejected fromservice. Inspection-In-Shop (2)Applicable to RRTrent 500, 700llnd 800 engines at each shop visit in which the engine is sufficiently disassembled to access the !PCompressor Module rear face: Inspect ilie lPCompressor rolor rear balance land for cracks in accordance with Rolls-Royce R.B211 Propulsion System Alert Non Modification Service Bulletin RB.211-7Z-AF260, Revision 2, dated July 4, 2007; or earlier issue section 3Accomplishment Instructions. Other FAAADProvisions If]Alternative Methods ofCompliance (AMOCs):The Manager, Engine Certification Office, FAA.has the authority to approve AMOCsforthis AD. ifrequested using the procedures found in 14CPR39.19.
Related Information (g)RefertoEASAAirworthiness Direcliva 2007-0052, dated February 23, 2007, for related information. (h) ContactJames Lawrence. Aerospace Engineer. Engine Certification Office, FAA. Engine and Propeller DiredoraLe, 12New England Executive Park. Burlington, MA 01803; e·mail: jomes.1owrenee@/rJrl.gov; telephone (781) 238-7176; fax (781) 238- 7199,formore information about this AD.
Material Incorporated by Reference IiIYoumust use the service information specified in Table 1 ofthis ADto do the actions required by this AD, unless the AD specifies otherwise. (1)The Director ofth8 Federol Register approved the incorporation by reference of this service infonnation under 5U.S_C. 552(a) and 1 CFRpert 51. (2)Forservice inIormation identified in this AD,contaClRolls-Royce pic, P.O. Box 31,Derby. DE24BBJ.United Kingdom: telephone: 44 (0)1332-242424; fax:44 {OJ 1332-249936, (3)You mayreview copies atthe FAA. New England Region, 12New England Executive Park, Burlington, MA; oratthe National Archives and Records Administration (NARA).Forinfonnation on the availability ofthis material atNAKA,call (202) 741-6030, orgo to: http:// www.archives.govlfederoJ-regi!ilerlcjr/jbr. locations.htm/.

TABLE 1-MATERIAL iNCORPORATED BYREFERENCE

AlertService BulletinNo. Page Revision Date
RB.211-72-AF260; TOlalpages-11 ALL RB.211-72-AF260; Tota! pages-11

._...... ALL RB.211-72-AF260; Total pages~11

.. All RB.211-72-AF313; Total pages-11 ALL

# ··::·:::.::·::::::::::.::::i···········

•.•.••..•..••.• I ••••.•••• 

# ················::::-:T········· Original October 17, 2006. 1 January 17. 2007. 2

_.. July 4, 2007. Original.,... February 22, 2007.

Issued in Burlington, Massachusetts. on Augusl 25, 2008. Mark A. Rumizen, ActingMonuger, Engineund Propeller Directorate, Aircroft Certifieulion SelVioo. [FRDoc.E3-20212 Filed 9-8-08; 8:45 ami

ellllNG COOE491G-l:J-f'

DEPARTMENT OF TRANSPORT AnON

Federal Aviation Administration

14 CFR Part 39 {Docket No. FAA-2ooe-0946; DIrectorate Identifier 200e-NM-147-AD; Amendment 39-15667; AD2008-18-10]

RIN212Q-AA64

Airworthiness Directives; McDonnell Douglas Model MD-90-30 Airplanes

AGENCY:

Federal Aviation Administration (FAA), DOT. ACTION: Final rule; request for
comments.

SUMMARY:

We 

### are adopting a new airworthiness directive (AD) for certain McDonnell Douglas Model MD-9()-30 airplanes. This AD requires a detailed inspection for certain defects ofthe upper fasteners ofthe aft mount support fitting ofthe left and right engines and corrective actions ifnecessary. This AD results from reports of loose, cracked, or missing fasteners in the aft mount support fitting ofthe left and right engines. We are issuing this AD to 

### I delect and correct loose, cracked, or missing fasteners in the engine aft support mount fitting, which could lead to separation ofthe support fitting from the pylon, which could result in separation ofthe engine from the airplane. DATES; This AD is effective September 24,2008. The Director ofthe Federal Register approved the incorporation by reference of a certain publication listed in this AD

as of September 24, 2008. We must receive comments on this AD by November 10, 2008. 

### I ADDRESSES:

You may send comments 

### by
any ofthe following method$':

• Federal eRulema1dng Porlal: Go to 

### http://www.regulations.gov. Follow the instructions for submitting comments.

• Fax:202-493-2251.

• Mail: U.S. Department of Transportation, Docket Operations. M30, West Building Ground Floor, Room WI2-140, 1200 New Jersey Avenue, SE., Washington, DC 20590.



### • Hand Delivery: U.S. Department of Transportation, Docket Operations, M30, West Building Ground Floor, Room W12-140, 1200 New Jersey Jj\venue, SE.• Washington, DC 20590, bet;'Yeen 9 a.m. and 5 p.m., Monday througH Friday, except Federal holidays. 

### I For service information identified in this AD, contact Boeing Corrtmercial Airplanes, Long Beach Divis:ion, 3855 Lakewood Boulevard, Long Beach, California 90846, Attention: Data and Service Management, Dept. C1-L5A (D800--.-0024). Examining the AD Docket

You may examine the AD docket on the Internet at 

### http:// Ivv.w.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 street address for the Docket Office (telephone 80Q-647- 5527) is in the ADORESSES section. Comments will be available in the AD docket shortly after receipt. FORFURTHER

INFORMATION

CONTACT: Roger Durbin, Aerospace Engineer, Airframe Branch, ANM-120L, FAA, Los Angeles Aircraft Certification Office, 3950 Paramount Boulevard, Lakewood, California 90712-4137; telephone (562) 627-5233; fax {562l627-5210. SUPPLEMENTARV

INFORMATION:

Discussion
We have received reports ofloose, cracked, or missing fasteners in the aft mount support fitting ofthe left and right engines on several McDonnell Douglas Model MD-9G--30 airplanes. The airplanes had accumulated between 18,757 and 25,400 totai flight hours and between 15,841 and Z7,OOOtotal flight cycles. A safety assessment of the missing fasteners has concluded that loose or discrepant fasteners in the top

### 52204 Federal Register/Vol. 73, No. 175/Tuesday, September 9, 200s/Rules and Regulations

horizontal row, common with the pylon skin, significantly decrease the margin of safety ofthe aft mount support installation at the design limit load. Loose, cracked, or missing fasteners in the engine aft mount support fitting could lead to separation ofthe support fitting from the pylon. This condition, if
not COITected, could result in separation ofthe engine from the airplane.

Relevant Service Information
We reviewed Boeing Alert Service Bulletin MD9O--S4A002, dated August 1, 2008. The service bulletin describes procedures for doing a detailed inspection for certain defects ofthe upper fasteners ofthe aft mounl support fitting ofthe left and right engines, and corrective action as applicable. The detailed inspection consists of the following actions: (1) A general visual inspection ofthe upper fasteners for any missing, loose, or damaged fasteners, (2)

a gap check between the washers and structure or between the fastener heads and structure, ifapplicable, and (3) a torque check ofthe fastener nuts, if applicable. The corrective action includes replacing all fasleners ifany defect is found.

FAA's Determination and Requirements ofTbis AD
We are issuing this AD because we evaluated all the relevant information and determined the unsafe condition described previously is likely to exist or develop in other products ofthe(se)

same type design(s). This AD requires accomplishing the actions specified in the service information described previously.

Inlerim Action
This is considered to be interim action until final action is identified, at which time we might consider further rulemaking.

FAA's Justification and Determination ofthe Effective Date Loose, cracked, or missing fasteners in the engine aft mount support fitting could lead to separation ofthe support fitting from the pylon, possibly resulting in separation of the engine from the airplane. Because ofour requirement to promote safe flight ofcivil aircraft and thus, the critical need to assure structural integrity ofthe engine aft
mount support fitting and the short compliance time involved with this action, this AD must be issued immediately. Because an unsafe condition exists that requires the immediate adoption of this AD, we find that notice and opportunity for prior public comment he~on are impracticable and that good

cause exists for making this amendment effective in less than 30 days.

Comments Invited
This AD is a final rule that involves requirements affecting flight safety, and

we did not provide you with notice and

an opportunity to provide your comments before it becomes effective. However, we invite you to send any written data, views, or arguments about this AD. Send YOuecomments to an address listed under the ADDRESSES section. Include "Docket No. FAA2008-0946; Directorate Identifier 2008- NM-147-AD" at the beginning ofyoor comments. We specifically invite
comments on the overall reg~latory, economic, environmental, and energy aspects of this AD. We will consider all
comments received by the closing date and may amend this AD beca\Ise of those comments. We will post all comments we receive, without change, to 

### http:// www.regulotions.gov, including any personal information you provide. We will also post areport summarizing each subslantive verbal contact we receive about this AD. Authority for This Rulemaking
Title 49 ofthe 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 VIT: Aviation Programs," describes in more detail the scope of the Agency's authority. We are issuing this rulema.king under the authority described in "Subtitle VII, Part A, Subpart Ill, Section 44701: General requirements." Und~r that section, Congress charges th~ FAA with promoting safe flight of civillaiIcraft in air commerce by prescribing regulations for practices, methods, and procedures the Administrator finds nec~ssary for safety in air commerce. This1cegulation is within the scope of that authority because it addresses an unsafe condition that is likely to exisl or develop on products identified in this rulemaking action. Regulatory Findings
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 ofgovernment. 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 Regulalory 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 ofthe Regulatory Flexibility Act. You can find oue regulatory evaluation and the estimated costs of compliance in the AD Docket.

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-AlRWORTHlNESS DIRECTIVES

• 1. The authority citation for part 39 continues to read as follows: Authurity: '19U.S.C. 106(g). 40113, 4,1701.
§39.13 (Amended}
.2. Tbe FAA amends §39.13 by adding the following new AD: 2008-18....-10 M~Donnen Douglas: Amendment 39-15667. Docket No. FAA-2008-09<l6: Directorate Identifier 2008-NM-1<l7~AD.
Effective Date (e)This airworthiness directive (AD)is effective September 24. 2008_
Affected ADs (bJNone. Applicability (e)This ADapplies toMcDonnell Dougles Model MD-90-30 airplanas, o;<lrlificatlld in any category; as identified in Boeing Alert Service Bulletin MD9Q-54A002, dated August 1. 2008.
Unsafe Condition {d)This ADNsulls fromreports ofloose, cra~ked. ormissing fasteners in the aftmount support fitling ofthe left and right engines. Weare issuing this AD 10detect and correct loose, cracked, ormissing fasteners in the engine aft support mount fitting, which could lead to sepatation ofIhe support fitting from the pylon, which could result in separation ofIhe engine from the airplane.
Compliance (elComply with this ADwithin the compliance times specified, unless already done.
Detailed Inspection (0Within 703 flight cycles afterthe effective dale ofthis AD,do adetailed

### Federal Register/Vol. 73, No. 175/Tuesday, September g, ZOOS/Rulesand Regulations 52205

inspection forany derect Imissing, loose, or damaged fasteners; incorrect gapbetween washers and structure orbetween fastener heads and structme; orincorrect torque of fastener nuls) ofthe upper fasteners ofthe aft mount support fitting ofthe leftand right engines, and do aUthe applicable corrective actions before further flight, by accomplishing all ofthe applicable actions specified inthe Accomplishment InstructiOns ofBoeingAlert Service Bulletin MD9G-54AOOZ,

dated August I, 2008.
Credit forActions Doneper Multiple Operator Message (MOM) (g)Actions done before the effll(:tivedate ofthis AUin accordance with BoeingMOM 1-89388Z781-2, dated July 25, zooa, are acceptable forcompliance with the requirements ofparagraph !Dofthis AD.
Alternative Methods ofCompliance (AMOCs) (h)(l) The Manager, Los Angeles Certification Office (ACO),FAA,ATIN; RogerDurbin, Aerospace Engineer, Airframa Branch, ANM-120L, FAA. LosAngeles ACO, 3960 Paramount Boulevard, Lakewood, California 90712-4137; telephone (562)627- 5233; fax (56Z)627-5210; has the authority to approve AMOCsforthis AD,ifrequested using the procedures found in 14CFR39.19. (2)To request a different method of compliance ora different compliance time forthis AD, follow the procedures in 14CFR 39.19. Beforeusing any approved AMOCon any airplane to which the AMOCapplies, notify your appropriate principal inspector (PI)inthe FAAFlight Standards District Office (FSDOj,or lacking aPI,your local FSOO. (3)An AMOCthat provides an acceptable level ofsafety may beused forany repair required by this AD, ifit is approved by an Authorized Representative forthe Boeing Commercial Airplanes Delegation Option Authorization Organization who has heen authorized bythe Manager, LosAngeles ACO,tomake those findings. Forarepair method tobe approved, the repair must meet the certification basis ofthe airplane, and the approval must specifically refer tothis AD. Materiallncorporatcd by Refereoce (iJYou must use Boeing Alert SOfvice Bulletin MD9Q-54A002, dated August 1, 2008, to do the actions required by this AD, unless the ADspecifies otherwise. (1)The Director ofthe Federal Register approved the incorporation by reference of this service information under 5 V.S.C. 552(a) and 1 CFRpart 51. (2)Forservice information identified in this AD,contact Boeing Commercial Airplanes, LongBeach Division, 3855 Lakewood Boulevard. LongBeach, California 90846, Attention; Darnand Service Managemeot, Dept. CI-LSA (D80G-0024). (3)You mayreview copies ofthe service information incorporated by reference at the FAA,Transport Airplane Directorate, 1601 Lind Avenue SW

.. Renton. Washington; Drat the National ArclJ.i"esand Records Administration INARA).For information on the availability ofthis material atNARA,call 202-741-60JO, Or goto: http:// Ivww.orchivcs.gov/federaCregis!er/ Cl}de_ofJedemLreguluUons/ ibclocuUolls.htmJ. Issued inRenton. Washington, on August 25,2008. Dionne Palermo, Acting Monager, Trrmsport Airplane Directorate. Aircraft Certifiection Service. (FRDoc_E8--20494Filed 9-8-08; 8:45 aml

61li.1HG CODE .!l1ll-'3-I'

DEPARTMENT OF TRANSPORTATION

Federal Aviation AdmInistration

14 CFR Part 39 (Docket No.FAA-2008-0955; Di~eclorate Identifier 2008-CE-<l4Q-AD; Amendment 39-15668; AD2008-19-01)

RIN212o-AA64

AirworthIness DIrectives; Harco Labs, Inc. PitotfAOA Probes (Part Numbers 100435-39, 100435-39-001, 100435-40, and 100435-40-001)

AGENCY:

Federal Aviation Administration (FAA), DOT. ACTION: Final rule; request for comments.

SUMUARY:

The FAA is adopting a new airworthiness directive (AD) for certain Hareo Labs. Inc. part numbers 100435- 39,100435-39-001,100435-40,and 100435-40-001 pitot/angle of attack (ADA) probes installed on, but not limited to Eclipse Aviation lnc. Model EA50a airplanes. This AD requires you to incorporate information into the Limitations section ofthe airplane flight manual (AFM) that will allow operation only under day visual flight ~les (VFR) and allow only a VFR flight plan. This AD also requires you to test the pitotl ADA probes for heater performance and replace the pilot! ADA probelif it fails the heater performance test This AD results from several reports df airspeed disagree caution indication due 10 blockage from freezing condensation within the pitot! ADA system. We are issuing this AD to detect and correct improperly performing pitotl ADA probe heaters, which could result in blockage ·within the pitot/ADA system from condensation freezing with consequent incorrect indication of impact air pressure (airspeedl ADA). This blockage could lead to the stall warning becoming unreliable and the stick pusher, overspeed warning, autopilot, and yaw damper to malfunction. OATES:This AD becomes effective on September 29, 2008. On September 29, 2008, the Director ofthe Federal Register approved the incorporation by reference ofcertain publications listed in this AD.

, We must receive any comments on

this AD by November 10, 2008. ADDRESSES:

Use one of the following addresses to conunent on this AD.

• Federal eRulemaking Portal: Go to 

### http://www.regulations.gov. follow the instructions for submitting comments.

• Fax: (202) 493-2251.

• Moil: U.S. Department of Transportation, Docket Operations, M30, West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue, SE., Washington, DC 20590.

• Hand Delivery: U.S. Department of Transportation, Docket Operations, M30, West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue, SE., Washington, DC 20590, between 9 a.m. and 5 p.m., Monday..th'fOugh Friday, except Federal 90fidays. To get the service information identified in this AD, contact Harco Labs, Inc. 186 Cedar Street, Branford, Connecticut 06405; telephone: (203) 483-3700; fax; (203) 483-3701, and Eclipse Aviation, 2503 Clark Carr Loop SE, Albuquerque, New Mexico 87106: telephone: (505) 245-7555; fax: (505) 241-8802. To view the comments to this AD, go 

### tohttp://www.regulations.gov. The docket number is FAA-2008-0955; Directorate Identifier 2008-CE-04G-AD. FORFURTliER

INFORMATION

CONTACT: Solomon Hecbt. Aerospace Engineer, 12 New England Executive Park, Burlington, Massachusetts 01803; telephone: (781) 238-7159; fax: (781) 238-7170. SUPPLEMENTARY

INFORMATION:

Discussion
We received several reports of airspeed disagree caution indication due
to blockage within the pilollAOA system from freezing condensation. We

are issuing this AD to detect and correct improperly perfonning pilot/ADA probe heaters. This condition, ifnot corrected, could result in ablockage \vithin the pitot/ ADA system from condensation freezing with consequent incorrect indication of impact air pressure (airspeedJ ADA). ·This blockage could lead to the stall warning becoming unreliable and the stick pusher. overspeed warning, autopilot, and yaw damper to malfunction.

Relevant Service Information
We reviewed Hareo Labs, Inc. Service Bulletin SB-34-1O-1(}-QOl, Revision f, dated August 19, 2008: Hareo Pitot ADA Probe Internal Tubing Heater Verification Test Procedure No. Pl149, Rev; E, referenced in 8. Appendix A of Harco Labs. Inc. Service Bulletin SB-