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Sun, Oct 07, 2012

AD: The Boeing Company Airplanes (737)

AD NUMBER: 2012-20-01

PRODUCT: Certain Boeing Model 737-100, -200, and -200C series airplanes.
SUBJECT: Airworthiness Directive 2012-20-01
ACTION: Final Rule

SUMMARY: This AD was prompted by a report of a severed upper butt strap, and cracks in the forward skin and bonded doubler, on one airplane. This AD requires repetitive inspections for cracks and a chemical spot test in the area of station (STA) 908, and related investigative and corrective actions, if necessary. For certain airplanes, this AD requires an inspection and modification.

The FAA is issuing this AD to prevent cracks at the adjacent mating skins (forward and aft), which could initiate just above stringers S-4R and S-4L; and could grow and result in a decompression event.

DATES: This AD is effective November 9, 2012.

FMI: AD

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