Background
CurrentBackground
Background Background
One hundred and sixty two cracks have been experienced on 707, 727 and 737 aircraft in the subject region, including aircraft that have been modified and repaired to earlier issues of the SB. This SB has been identified by the B737 Ageing Aircraft Structures Working Group as a safety of flight item and requires the area to be modified; Directive AD/B737/40 refers. Amendment 1 extended the inspection area to structure above the cockpit window.
Amendment 2 revises the Applicability.
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