AD NUMBER: 2005-13-27 MANUFACTURER: Boeing SUBJECT: Airworthiness Directive 2005-13-27 SUMMARY: The FAA is adopting a new airworthiness
directive (AD) for certain Boeing Model 737-300, -400, and -500
series airplanes. This AD requires repetitive inspections for
cracking of the crown area of the fuselage skin, and corrective
actions if necessary.
This AD is prompted by a Model 737 fuselage structure test
and fatigue analysis that indicate fuselage skin cracking could
occur between 21,000 and 42,000 total flight cycles. We are issuing
this AD to detect and correct fatigue cracking of the fuselage
skin, which could cause the fuselage skin to fracture and fail, and
could result in rapid decompression of the airplane.