14910-13-Pj

14 CFR ParI 39

DEPARTMENT OF TRANSPORTATION

Feder-al Aviation Administration

120b

(Docket No. FAA-2010-+t+++; Directorate Identifier 2009-NM-216-AD)

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RlJ'I2120-AA64

Airworthiness Directives; t0cDonnell Douglas Corporation Model OC-l 0-1 0,

DC-IO-IOF, and MD-l0-10F Airplanes

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AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain Mod I

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DC-l 0-1 0, DC-l 0-1OF, and MD-l 0-1OF airplanes. Thjs proposed AD would require

repetitive inspections for cracking on the lower cap of the rear spar of the left and right

wings between Stations Xors=417 and the outboard edge of the lower cap splice of the

wing rear spar at Station Xors=400; temporary and penllancnt repairs ifnecessary; and

repetitive inspections of repaired areas. This proposed AD r~suJts from reports of three

instances of airplanes having a fuel leak in the lower cap of the wing rear spar at Station

Xors=409. We are proposing this AD to detect and correct cracking on the lower cap oj

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the rear spar of the left and right wings between Stations Xors=417 and the outboard cd c

of the lower cap splice of the wing rear spar at Station Xors=400 that could result in fue

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leaks or could spread to cracking of the lower wing skin and structure causing possible

inability of the structure to sustain the limit load, which could adversely affect the

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structural integrity of1he airplane.

DATES: We must receive comments on this proposed AD by [INSERT DATE 45

DAYS AFTER DATE OF PUBLICATION IN THE FEDERAL REGISTER].
149JO-13-PI

DEPARTMENT OF TRANSPORT AnON

Federal Aviation .Administration

14 CFR Part 39

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(Docket No. FAA-2010-+++++; Directorate Identifier 2009-NM-216-AD)

RIN 2120-AA64

Airworthiness Directives; McDonnell Douglas Corporation Model DC-l 0-1 0,

DC~lO-10F, and MD-JO-IOF Airplanes

AGENCY: Federal Aviation Administration (FAA), D<DT_

ACTION: Notice of proposed rulemaking (NPRM),

SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain Model

DC~10-1 0, DC-l 0-1 OF, and MD-l 0-1 OF airplanes. This proposed AD would require

repetitive inspections for cracking on the lower cap of tJe rear spar of the left and right

wings between Stations Xors=417 and the outboard edge of the lower cap splice of the

\~ing rear spar at Station Xors=400; temporary and peJanent repairs if necessary; and

repetitive inspections of repaired areas. This pr~posed ~D results from reports of three

instances of airplanes having a fuel leak in the lower caJ of the wing rear spar at Station

Xors=409_ We are proposing this AD to detect and corrlet cracking on the lower cap of

the rear spar of the left and r;ghl w;ngs between Stal;on1 Xors~417 and the outbomd edge

of the lower cap splice of the wing rear spar at Station )(ors=400 that could result 111 fuel

leaks or could spread to cracking of the lower wing skin and structure causing possible

inability of the structure to sustain the limit load, which could adversely affect thestructural integrity of the airplane.

OATES: We must receive conID1cnts on this proposed to by[INSERT DATE 45

DAYS AFTER DATE OF PUBLICA nON IN THE FEDERAL REGISTER].

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FAA Form 1350-14.1 (5-89) OFFICIAL FILE COP'r'i JU.S.OOV~~NM~NTP~"'TING OFF,C~, ,." .1G&-211
14910-13-PI

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

IDocket No. FAA-201 0- I I 1 I 1; Directorate Identifier 2009-NM-216~ADI

RIN 2120-AA64

Airworthiness I)irectivcs; McDonnell Douglas CorpoT'ation Model DC-! 0-1 0,

DC-lO-IOF, and MD-IO~IOF Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

SUMMARY; We propose to adopt a new airworthiness directive (AD) for certain Model

DC-IO-lO, DC-1O-10F, and MD-lO-lOF airplanes. This proposed AD would require

repetitive inspections for cracking on the lower cap of the rear spar of the left and right

wings between Stations Xors=417 and the outboard edge of the lower cap splice of the

wing rear spar at Station Xors=400, and related corrective actions jf necessary. This

proposed AD results from reports of three instances of airplanes having a fuel leak in the

lower cap ofthe wing rear spar at Station Xors=409. ,e arc proposing this AD to detcct

<lndcorrect cracking OlJthe lower cap of the rear spar 0rhe left and right wings between

Slations Xors=417 and the outboard edge oflhe lower cap spUce of the wing rear spar at

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Station Xors=400 that could result in fuel leaks or could spread to cracking of the lower

\-vingskin and structure causing possible lnability to sustain the limit load, which could

adversely afteCl the structural integrity of the airplane.

DATES: We must receive comments on this proposed AD by [INSERT DATE 45

DAYS AFTER DATE OF PUBLICATION IN THE FEDERAL REGISTER].

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FAA Form 1360-14.1 (6-89) OFFICIAL FILE COP~