Service difficulty report · Barrier · Boeing 7377H4

Difficulty date
March 28, 2022
Submitted
April 25, 2022
Operation
Air carrier
Aircraft
N769SW
Make and model
Boeing 7377H4
Aircraft serial
30588
Aircraft time
74,146 hours, 43,614 cycles
Part
Barrier
Condition
Cracked
Location
L/H Mlg
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

CRACK IN LEFT HAND VAPOR BARRIER AT B.S. 663; L.B.L. 8; W.L. 150. / [38] INSTALLED L/H VAPOR BARRIER BS 663 IAW SRM 51-40-02-0G-0 AND DWG 111A1000 REV-B AND 111A1001 REV-B AND 111A7000 REV-A. REQ OK TO INSTALL STEPS 4; 12 AND 13;[39] OK TO INSTALL EXHAUST PNL NGS STEP 17;[40] OK TO INSTALL ITEMS IN STEP 4;12;13; AND 17;[41] INSTALLED L/H VAPOR BARRIER BS 663 IAW SRM 51-40-02-0G-0 AND DWG 111A1000 REV-B AND DWG 111A1001 REV-B AND DWG 144A7100 RE.-;[42] UPDATED STEPS 4;12; 13; AND 16;[43] UPDATED STEP 17;[44] REQ. OK TO INSTALL ITEMS IN STEP 14 ND 15;[45] STEPS 14 AND 15 UPDATED.;[46] UPDATED STEP 17;[47] VERIFIED CORRECTIVE ACTION 41.;[48] APPLIED CAP SEAL AT FSTENERS AFT SIDE L/H VAPOR BARRIER BS 663 IAW AMM 51-31-00-390-805;[49] UPDATED STEP 2;3 AND 4;[50] UPDATED STEP 14 AND 15;[51] COMPLETED STEPS 14 AND 15 AND APPLIED CAP SEAL AT FASTENERS REFER ITEM 48;[52] VERIFIED STEPS 14 AND 15 (CORRECTIVE ACTION 50 AND 51;[53] OPENED STEPS 2; 3 AND 4 TO ALLOW Q/C BUY OFF OF STEPS;[54] STEPS 2-4 COMPLETE;[55] VERIFIED VAPOR BARRIER INSTALLATION ON CORRECTIVE ACTION 41.;[56] L/H BS663 VAPOR BARRIER REPLACEMENT IS COMPLETE.

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