Airworthiness Directive · Amendment 39-15526 · Boeing Model 737-100, -200, -200C, -300, -400, and -500 Series Airplanes
Boeing Model 737-100, -200, -200C, -300, -400, and -500 Series Airplanes
Superseded. A later AD replaced this one: AD 2014-05-21. Comply with the one in force.
This AD applies to all Boeing Model 737-100, -200, -200C, -300, -400, and -500 series airplanes, certificated in any category.
We are adopting a new airworthiness directive (AD) for all Boeing Model 737-100, -200, -200C, -300, -400, and -500 series airplanes. This AD requires repetitive inspections for cracking in and around the upper and lower hinge cutouts of the forward entry and forward galley service doorways, and corrective actions if necessary. This AD results from multiple reports of cracks found in the skin, bearstrap, and/or frame outer chord in the hinge cutout areas of the forward entry and forward galley service doorways. We are issuing this AD to detect and correct such cracking, which could result in 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.
Except as provided by paragraph (g) of this AD, at the applicable times specified in paragraph 1.E. of Boeing Alert Service Bulletin 737-53A1200, dated April 13, 2006, do external detailed, low frequency eddy current, high frequency eddy current, and high frequency eddy current rotary probe inspections, as applicable, for cracks in and around the upper and lower hinge cutouts of the forward entry and forward galley service doorways, in accordance with the Accomplishment Instructions of the service bulletin, except as provided by paragraphs (h) and (i) of this AD. Do not exceed the applicable repetitive interval for the previous inspection, as specified in the service bulletin as Option A or Option B. Repair any crack before further flight using a method approved in accordance with the procedures specified in paragraph (i) of this AD.
Where Boeing Alert Service Bulletin 737-53A1200, dated April 13, 2006, specifies a compliance time after the release date of the service bulletin, this AD requires compliance within the specified compliance time after the effective date of this AD.
(h) Although Boeing Alert Service Bulletin 737-53A1200, dated April 13, 2006, specifies contacting Boeing for information about installing an optional preventive modification that would terminate the repetitive inspections specified in this AD, this AD requires that any terminating action be done by using a method approved in accordance with the procedures specified in paragraph (j) of this AD.
(i) The inspections specified in paragraph (f) of this AD may be terminated at areas repaired in accordance with Boeing 737-100/-200 SRM 53-30-1, Figures 20, 21, 31, or 32; or Boeing 737-300/-400/-500 SRM 53-10-01, Repair 5, 6, or 8; as applicable.
