Service difficulty report · Skin · Boeing 73776N

Difficulty date
September 12, 2021
Submitted
October 5, 2021
Operation
Air carrier
Aircraft
N7885A
Make and model
Boeing 73776N
Aircraft serial
33379
Aircraft time
58,530 hours, 28,804 cycles
Part
Skin
Condition
Delaminated
Location
L1 Door
Stage of operation
IN
How discovered
9
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

L1 DOOR UPPER AFT CORNER SKIN LIFTED ; / [01] REMOVED 1 EA FASTENER ON L1 DOOR AFT CORNER OUTER SKIN FOR REWORK AND NDT PER B-737-7 SRM 51-40-02-0G-0; [02] VERIFIED REMOVAL.; [03] REWORKED AND STRAIGHTENED AFT CORNER SKIN PER BAC5300-2 STEP 8.2.1; [04] VERIFIED REWORK; OK; [05] PERFORMED HFEC ON REWORKED AREA IAW NDTM PART 6;51-00-00 PROCEDURE 23. NO CRACKS.<BR>[NORTEC 600;B/C 166316;CALIB.DUE-10/21]; [06] PERFORMED HFEC ROTO ON OPEN FASTENER HOLE AT REWORKED AREA IAW NDTM PART 6;51-00-00 PROCEDURE 16. NO CRACKS.<BR>[NORTEC 600;B/C 166316;CALIB.DUE-10/21]; [07] PERFORMED COUNTERSINK INSPECTION ON OPEN FASTENER HOLE AT REWORKED AREA IAW NDTM PART 6;53-30-00;PROCEDURE 3.NO CRACKS.<BR>[NORTEC 600;B/C 166316;CALIB.DUE-10/21]; [08] OK TO INSTALL PREVIOUSLY REMOVED FASTENER.; [09] INSTALLED FASTENER PREVIOUSLY REMOVED FOR ACCESS ON STEP 1 PER B-737-7 SRM 51-40-02-0G-0.; [10] OK TO APPLY ALODINE AND PRIMER.; [11] APPLIED ALODINE PER B-737-7 SRM 51-20-01-0G-0 APPLIED PRIMER PER B-737-7 AMM 51-21-72-370-804; [12] VERIFIED TREAT AND PRIME APPLICATION; [13] OK TO APPLY TOP COAT; [14] APPLIED TOP COAT PER B-737-7 AMM 51-21-73-370-801; [15] VERIFIED TOP COAT APPLICATION

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