[4910-13-1'1

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 em Part 39 1102.-

IDocket No. FAA-20to-++++j Directorate Identifier 201O-NM-167-AD

RIN 2120-AA64

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Ainvorthiness Directives; McDonnell Douglas Corporation Model rvID-90-30 Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTlON: Notice of proposed rulemaking (NPRM).

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

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instructions for submitting comments.

MD-90-30 airplanes. This proposed AD would require repetitive inspections for cracking

of the left and right upper center skin panels of the horizontal stabilizer and corrective

action if necessary. This proposed AD was prompted by cracking damage to an MD-8D

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 stabilizrr.

DATES: We must receive comments on this proposedAIj) by (fNSERT DATE 45

DAYS AFTER DATE OF PUBLICATION IN THE FedJral Register).

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

• Fa" 202-493-2251.

• Federal cRulcmaking Portal: Go to httpJ/www.regulations.lwv. Follow the

• Mail: U.S. Department of Transportation, Docket Operations, ]\11-30,West

Building Ground Floor. Room W12-140, 1200 New Jersey Avenue SE., Washington, DC

FAA-Form 13&0_14.1 (6-89) OFFICIAL FILE COpy
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• Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the

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

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

DAYS AFTER DATE OF PUBLICATION IN THE Federal Register].

MD-90-30 airplanes. This proposed AD would require repetitive inspections for cracki

of the left and right upper center skin panels of the horizontal stabilizer and corrective

action if necessary. This proposed AD was prompted by cracking damage to an MD-8

right horizontal stabilizer upper center skin panel at the aft inboard corner. We are

proposing this AD to detect and correct such cracking damage, which could result in I

of the overall structural integrity of the horizontal stabilizer.

[491O-I3-P]

(Docket No. FAA-2010-++++j Directorate Identifier 2010-NM-167-AD

instructions for submitting comments.

• Fax: 202-493-2251.

Ainvorthiness Directivesj McDonnell Douglas Corporation Model MD-90-30 Airplm

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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

14 CFR Part 39

Federal Aviation Administration

DEPARTMENT OF TRANSPORT AnON

RlN 2120-AA64

•

• Mail: U.S. Department of Transportation, Docket Operations, M-30, West

Building Ground Floor, Room WI2-140, 1200 New Jersey Avenue SE., Washington, C

~-----

20590.
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14910-I3-P]

DEPARTMENT OF TRANSPORTA nON

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2010-++++; Directorate Identifier 20~O-NM-167-AD

RIN 2120-AA64

AirwOlthiness Directiyes; McDonnell Douglas Corporation Model MD-90-JO Airplanes

AGENCY; Federal AViation Administration (FAA), DOll.

ACTION; Notice of proposed rulemaking (NPRM).

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

MD-90-30 airplanes. This proposed AD would require repetitive inspections for cracking

of the left and right upper center skin panels of the horizontal stabilizer and corrective

action if necessary. This proposed AD was prompted by cracking damage to an MD-80 ,

right horizontal stabilizer upper center skin panel al the aft inboard comer. \Ve are

proposing this AD to delect and correct sllch cracking damage, which could result in loss

of the overall structural integrity of the horizontal stabilizJr.

]

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

DAYS AFTER DATE OF PUBLICATION IN THE Federal Register].

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

• Federal eRulcmaking Portal: Go to http://\\'\v\v.reglllations.12ov. Follow the

instructions for submitting comments.

• Fax: 202-493-2251

• Mail' U.S. Department of Transportation, Docket Operations, M~30, West

Building Ground Floor, Room W12-140, 1200 New Jersey AvenueSE., Washington, DC

20590.

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