Airworthiness Directive · Amendment 39-14344 · Boeing Model 737-600, -700, -700C, -800, and -900 Series Airplanes
Boeing Model 737-600, -700, -700C, -800, and -900 Series Airplanes
This AD applies to all Boeing Model 737-600, -700, -700C, -800, and -900 series airplanes, certificated in any category.
The FAA is adopting a new airworthiness directive (AD) for all Boeing Model 737-600, -700, -700C, -800, and -900 series airplanes. This AD requires repetitive inspections of the aft pressure bulkhead web for fatigue cracks, crack indications, discrepant holes, and corrosion; and repair if necessary. This AD results from reports of fatigue cracks in the aft pressure bulkhead web. We are issuing this AD to detect and correct such fatigue cracks, which could result in a rapid decompression of the airplane.
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
At the applicable “Inspection Threshold” in the table in Part 1.E. “Compliance” of Boeing Alert Service Bulletin 737-53A1248, dated September 9, 2004, or within 18 months after the effective date of this AD, whichever occurs later, and thereafter at intervals not to exceed the applicable “Inspection Repeat Interval” in that table: Do the inspections (i.e., detailed inspection and either high- or low-frequency eddy current inspections) of the aft pressure bulkhead web for fatigue cracks, crack indications, discrepant holes, and corrosion, in accordance with the Accomplishment Instructions of the service bulletin.
If any fatigue crack, crack indication, discrepant hole, or corrosion is found during any inspection required by this AD, before further flight, repair the fatigue crack, crack indication, discrepant hole, and corrosion according to a method approved by the Manager, Seattle Aircraft Certification Office (ACO), FAA; or using a method approved in accordance with the procedures specified in paragraph (i) of this AD.
Although the service bulletin references a reporting requirement in the Accomplishment Instructions, that reporting is not required by this AD.
