Service difficulty report · Vapor Barrier · Boeing 7377BD

Difficulty date
November 22, 2022
Submitted
January 10, 2023
Operation
Air carrier
Aircraft
N7742B
Make and model
Boeing 7377BD
Aircraft serial
33928
Aircraft time
51,535 hours, 27,572 cycles
Part
Vapor Barrier
Condition
Cracked
Location
Bs 663
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

FOUND CRACKED LOWER LT VAPOR BARRIER WEB STA 663. PERFORMED VISUAL INSPECTION ON L\H VAPOR BARRIER AND FOUND CRACK OF 11'' IAW NTM 51-05-01 AND APPLIED STOP DRILL SIZE 0.25 DIAMETER AT THE END OF CRACK PER B737SRM57-10-10-2R-2 STEP 6.B. PREPARED DAMAGED AREA TO APPLY REPAIR AT L\W VAPOR BARRIER IAW SRM 51-70-04-2R-0. REPAIRED LT VAPOR BARRIER AT DAMAGED AREA IAW SRM 51-70-04-2R-0. APPLIED PRIMER AT FWD FACE OF WEB & PAINT AT AFT FACE OF WEB IAW AMM 51-21-72-370-804, & 51-21-81-370-801.

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