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Sun, Apr 28, 2013

AD: The Boeing Company Airplanes

AD NUMBER: 2013-08-11

PRODUCT: Certain Boeing Model 737-900 and -900ER series airplanes.
SUBJECT: Airworthiness Directive 2013-08-11
ACTION: Final Rule

SUMMARY: This AD was prompted by reports of early fatigue cracks at chem-mill areas on the crown skin panels. This AD requires repetitive inspections for cracking of the fuselage skin along chem-mill steps at certain crown skin and shear wrinkle areas, and repair if necessary.

The FAA is issuing this AD to detect and correct fatigue cracking of the skin panel at the specified chem-mill step locations, which could result in rapid decompression of the airplane.

DATES: This AD is effective May 30, 2013.

FMI: AD

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