(4 CFR Part 39

[4910-13-PJ

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

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(Docket No. FAA·2010-++++; Directorate Identifier 2010-NM-168-AD

RIN 2120-AA64

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• Fax: 202-493-2251.

instructions for submitting comments .

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

DAYS AFTER DATE OF PUBLICATION IN THE Federal Register].

DC-9-8! (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87) and MDADDRESSES: You may send comments by any of the follo"ving methods:

• Federal eRulemaking Portal: Go to http://www.lgulatiOlls.gOv. Follow the

I

Ainvorthiness Directives; McDonnell Douglas Corporation Model DC-9-81 (MD~81),

DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87), and MD-88 Aicplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

SUl\'[MARY: We propose to adopt a new airworthiness directive (AD) for all Model

88 airplanes. This proposed AD would require repetitive inspections for cracking of

horizontal stabilizer left and right upper center skin panell, and corrective action if

necessary. This proposed AD was prompted by cracking damage to the right horizontal

stabilizer upper center skin panel at !.heaft inboard comer. We are proposing this AD to

detect and correct slIch cracking damage, which could result in loss of the overall

structural integrity of the horizontal stabilizer.

FAA Fonn 1360-14.1 (6-89) OFFICIAL FilE COPY
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• Fax: 202-493-2251.

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ACTION: Notice of proposed rulemaking (NPRM).

DAYS AFTER DATE OF PUBLICATION IN THE Federal Register).

DC-9-82 (MD-82), DC-9-83 (MO-83), DC-9-8? (MD-8?), and MO-88 Airplanes

Ainvorthiness Directives; McDonnell Douglas Corporation Model DC~9-81 (MD-81

RIN lJ20-AA64

DC-9-8l (MO-8l), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-8? (MD-8?) and MO

DEPARTMENT OF TRAl'lSPORT AT10N

14 CFR Part 39

Federal Aviation Administration

[Docket No. FAA-10IO-++++; Directorate Identifier lOIO-NM-I68-AD

[491O-13-P]

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

structural integrity of the horizontal stabilizer.

instructions for submitting comments.

DATES: Wc mllst receive comments on this proposed AD by [INSERT DATE 45

88 airplanes. This proposed AD would require repetitive inspections for cracking of

horizontal stabilizer left and right upper center skin panels, and corrective action if

necessary. This proposed AD was prompted by cracking damage to the right horizoota

stabilizer upper center skin panel at the aft inboard corner. We are proposing this AD t

detect and correct such cracking damage, whichlcould result in loss of the overall

ADDRESSES: YOllmay send comments by any of the following methods:

• Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the
14910-13-P]

DEPARTMENT OF TRANSPORTATION

Fc.dcral Aviation Administration

14 CFR Part 39

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RIN 2120-AA64

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

DA YS AFTER DATE OF PUBLICATION IN THE Fedbral Reg;ster],

88 airplanes. This proposed AD would require repetitive inspections for cracking of

horizontal stabilizer left and right upper center skin panels, and corrective action if

DC-9-81 (MD-8!), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87) and MD-

(Docket No. FAA-10lO-++++; Directorate Identifier 20tO-NM-168-AD

DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87), and MD-88 A;rplanes

Ainvorthincss Directives; McDonnell Douglas Corporation Model DC-9-81 (MD·8l),

AGENCY: Federal Aviation Administration (FAA.), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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

necessary. This proposed AD was prompted by cracking damage to the right horizontal

stabilizer upper center skin panel at the aft inboard comer. We are proposing this AD to

detect and correct such cracking damage, which could result in loss of the overall

structural integrity of the horizontal stabilizer.

ADDRESSES: You may send comments by any of the following methods:

• Federal eRulemaking Portal: Go to http://ww,,,1QUlations.gOv. Follow the

instructions for submitting comments .

• Fax: 202-493-2251.

FAA Form 1360-14.1 (6-89) OFFICIAL FILE COPY