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DEPARTMENT OF TRANSPORTA nON

14 CFR Par' 39

Federal Aviation Administration

0011

[Docket No. FAA-2010-++++; Directorate Identifier 2010-NM-075-AD)

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fuselage skin at skin lap joints, the skin at certain external approved repairs, the skin

727 airplanes. This proposed AD would require inspections for scribe lines in the

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around external features such as antennas, and the skin at decals; and related investigath

AGENCY: Federal Avialion Administration (BAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

SUM'MARY: We propose to adopt a new airworthiness directive (AD) for certain Mod

Airworthiness »irectivcs; The Boeing Company Model 727 Airplanes

S81-~£C} and corrective actions if necessary. This proposed AD results from reports of scribe line Nm~lG

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• Fax: 202-493-2251.

instructions for submitting comments.

found at skin lap joints and butt joints, around external repairs and antennas, and at

locations where external decals had been cut. We are proposing this AD to detect and

correct scribe lines, which can develop into fatigue cracks in the skin and cause sudden

decompression of the airplane.

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

DAYS AFTER DATE OF PUBLICATION IN THE FEDERAL REGISTER].

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

• Federal eRulemaking Portal: Go to http://ww\..v.rellulations.gov. Follow th~ .••~ '20 10

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration "ONC:U~RENCES

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14 CFR Part 39 f\1.jrn-i 14 m:_

[Docket No. FAA-2010-++++; Directorate Identifier 2010-NM-075-AD)

RIN 2120-AA64

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OI/TING sYHIlOl Airworthiness Directives; The Boeing Company Model 727 Airplanes

ACTION: Notice of proposed rulemaking (NPRM).

AGENCY: Federal Aviation Administration (FAA), DOT.

SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain Mod .0 roc Ol

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727 airplanes. This proposed AD would require inspections for scribe lines in the

fuselage skin at skin lap joints, the skin at certain external approved repairs, the skin

arolUld external features such as antennas, and the skin at decals; and related investigati

and corrective actions if necessary. This proposed AD results from reports of scribe line II

found at skin lap joints and butt joints, around external repairs and antennas, and at

locations where external decals had been cut. We are proposing this AD to detect and

correct scribe lines, which can develop into fatigue cracks in the skin and cause sudden

decompression of the airplane.

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

R\-.lf'\- reoS

• Fax: 202-493-2251.

DAYS AFTER DATE OF PUBLICATION IN THE FEDERAL REGISTER].

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

• Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow th~".&.- '219 / 0

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instructions for submitting comments.