Service difficulty report · Vapor Barrier · Boeing 7377BD

Difficulty date
November 7, 2022
Submitted
December 7, 2022
Operation
Air carrier
Aircraft
N7741C
Make and model
Boeing 7377BD
Aircraft serial
35788
Aircraft time
51,579 hours, 26,914 cycles
Part
Vapor Barrier
Condition
Cracked
Location
Bs 663
Stage of operation
IN
How discovered
E
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

BS 663.75 RT SIDE LOWER VAPOR BARRIER FOUND CRACKED, RBL 50. PERFORMED VISUAL INSPECTION AND TAP TEST ON VAPOR BARRIER AND FOUND CRACK OF 11 INCHES IAW NTM 51-05-01 AND APPLIED STOP DRILL SIZE 0.25 DIAMETER IAW SRM 57-10-10-2R-10, PARAGRAPH 6 B. CLEANED THE VAPOR BARRIER, NO WATER FOUND AT DAMAGE AREA AND PREPARE AREA TO APPLY REPAIR IAW SRM 51-70-04-2R-0, PARAGRAPH 4 E. REPAIRED THE VAPOR BARRIER IAW SRM 51-70-04-2R-10. PERFORMED TAP TEST ON REPAIRED AREA, FOUND NO DELAMINATION IAW NDT 51-05-01 SECTION 5. APPLIED PRIMER AND ABRASION RESISTANT FINISH IAW AMM 51-1-72-370-801 AND AMM 51-21-81-370-801.

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