Service difficulty report · Vapor Barrier · Boeing 7377H4

Difficulty date
September 19, 2020
Submitted
September 22, 2020
Operation
Air carrier
Aircraft
N264LV
Make and model
Boeing 7377H4
Aircraft serial
32521
Aircraft time
47,438 hours, 28,199 cycles
Part
Vapor Barrier
Condition
Cracked
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
O

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

What was found

FOUND CRACK ABOUT 7 IN LONG AT LEFT SIDE VAPOR BARRIER LOWER BETWEEN LBL 35 AND 33 MOD. TEMP REPAIR, PER EA 1-A57-13410. REPETITIVE INSPECTION REMOVE ALUMINUM FOIL SPEED TAPE AND INSPECT CRACK FOR ADDITIONAL GROWTH. IF NO ADDITIONAL GROWTH REAPPLY SPEED TAPE IF CRACK HAS GROWTH BUT IS STILL WITHIN LIMITS, PER EA STOP DRILL CRACK PER 737-700 SRM 51-10-02 AND APPLY TAPE. PERMANENT REPAIR ACCOMPLISH PERMANENT REPAIR AS GIVEN IN 737-700 SRM 51-70-04 REP 10 OR AS ALTERNATIVE REPAIR PART OF THE CRACK SO CRACK LENGTH IS LESS THAN OR EQUAL TO THE MAX ALLOWABLE DAMAGE LIMITS. APPLY THE INTERIM SEAL OVER THE CRACK THAT IS LEFT AS GIVEN IN 737-700 SRM 57-10-10 PARAGRAPH 2.C.4 ALLOWABLE DAMAGE 2. PERMANENT ACTION REQUIRED.

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