Airworthiness Directive · Amendment 39-9514 · The Boeing Company Airplanes
The Boeing Company Airplanes
This AD applies to The Boeing Company 737-200 Series, 737-200C Series.
The models as the FAA's AD index lists them. The serial ranges, installed parts and exceptions are in the AD itself: read it at the FAA.
This amendment supersedes an existing airworthiness directive (AD), applicable to certain Boeing Model 737-200 and -200C airplanes, that currently requires installation of fail-safe straps onto the engine inlet attach ring of the nose cowl. This amendment requires repetitive inspections to detect cracking of the attach ring of the nose cowl, and replacement of cracked attach rings. Replacement with an improved attach ring, if accomplished, would terminate the requirement to inspect the attach ring repetitively. This amendment is prompted by the development of an improved attach ring that eliminates the need for repetitive inspections. The actions specified by this AD are intended to prevent cracking of the attach ring of the nose cowl, which could result in separation of the nose cowl from the engine following failure of a turbine blade.
