Airworthiness directives › 2015-25-01
AD 2015-25-01 Airworthiness Directives; The Boeing Company Airplanes
Models named: 757-200, 757-200CB, 757-200PF. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to The Boeing Company Model 757-200, 757-200CB, and 757-200PF airplanes; certificated in any category; as identified in Boeing Alert Service Bulletin 757-52A0091, Revision 1, dated December 19, 2014.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
At the applicable times specified in table 1 of paragraph 1.E., “Compliance,” of Boeing Alert Service Bulletin 757-52A0091, Revision 1, dated December 19, 2014, except as provided by paragraph (j)(1) of this AD: Do a general visual inspection for broken or missing cam latches, latch pins, and latch pin cross bolts; torque the cross bolts in the latch pins; measure the extension of the latch pins; replace all alloy steel cross bolts through the latch pins with corrosion resistant steel (CRES) cross bolts; do a general visual inspection of all cam latches for lip deformation; do a high frequency eddy current (HFEC) or magnetic particle inspection of cam latch 1 and cam latch 2 for cracks and replace all cracked or broken parts; check the rig of the MCD and re-rig as applicable; and do all applicable related investigative and corrective actions; and thereafter do all applicable repetitive inspections specified in paragraphs (g)(1), (g)(2), and (g)(3) of this AD, in accordance with the Accomplishment Instructions of Boeing Alert Service Bulletin 757-52A0091, Revision 1, dated December 19, 2014, except as required by paragraph (j)(2) of this AD. Do all applicable related investigative and corrective actions at the applicable time specified in table 1 of paragraph 1.E., “Compliance,” of Boeing Alert Service Bulletin 757-52A0091, Revision 1, dated December 19, 2014. Do all applicable repetitive inspections at the applicable time and intervals specified in table 1 of paragraph 1.E., “Compliance,” of Boeing Alert Service Bulletin 757-52A0091, Revision 1, dated December 19, 2014, until the rig of the MCD has been checked in accordance with the Accomplishment Instructions of Boeing Alert Service Bulletin 757-52A0091, Revision 1, dated December 19, 2014. (1) For Condition 2 as defined in Boeing Alert Service Bulletin 757-52A0091, Revision 1, dated December 19, 2014: Do repetitive general visual inspections for broken or missing cam latches, latch pins, and latch pin cross bolts. (2) For Condition 3 as defined in Boeing Alert Service Bulletin 757-52A0091, Revision 1, dated December 19, 2014: Repetitive general visual inspections for broken or missing cam latches, latch pins, and latch pin cross bolts and repetitive detailed inspections of the discrepant cam latch and mating latch pin for any cracks, or gouges in critical areas. (3) For Condition 4 as defined in Boeing Alert Service Bulletin 757-52A0091, Revision 1, dated December 19, 2014: Repetitive general visual inspections for broken or missing cam latches, latch pins, and latch pin cross bolts; repetitive detailed inspections of the cam latches and latch pins for any cracks, or any gouges in critical areas; and, unless replaced with new or reworked parts, repetitive HFEC or magnetic particle inspections of cam latch 1 and cam latch 2 for any cracks.
Unsafe condition
This AD was prompted by a report that a forward-most cam latch on the forward center cam latch pair on a main cargo door (MCD) broke during flight. We are issuing to detect and correct cracked or damaged cam latches, latch pins, and latch pin cross bolts, which could reduce the structural integrity of the MCD, and result in potential loss of the cargo door and rapid decompression of the airplane.
Affected ADs
None.
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