Service difficulty report · Bulkhead Web · Boeing 7377H4

Difficulty date
July 27, 2021
Submitted
August 23, 2021
Operation
Air carrier
Aircraft
N902WN
Make and model
Boeing 7377H4
Aircraft serial
36615
Aircraft time
45,290 hours, 26,421 cycles
Part
Bulkhead Web
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

STA. 663.75 LEFT WHEEL WELL AT LBL 25 VAPOR BARRIER IS CRACKED ; / [01] CLEANED VAPOR BARRIER FOR DRY OUT AND REPAIR AT LBL 25 STA 663.75 AS PER B737-700 SRM 51-70-04-2R-10.; [02] VERIFIED STEP #1; [03] APPLIED DRY OUT AT VAPOR BARRIER PER B737 SRM 51-70-04-2R-0 PARAGRAPH (4.D); [04] PERFORMED VISUAL INSPECTION FOUND CRACKED SIZE 19'AT VAPOR BARRIER ON LBL25 PEB737NTM PART 1 51-05-01 AND APPLIED STOP DRILL ON END CRACK PER B737SRM 57-10-10-2R-2 AND B737SRM51-10-02-0G-0; [05] VERIFIED ACCOMPLISHMENT OF STEPS 3 AND 4.<BR>OK TO APPLY REPAIR; [06] REPAIRED VAPOR BARRIER AT LEFT WHEEL WELL LBL 25; STA 663.75 AS PER B737-700 SRM 51-70-04-2R-10; [07] VERIFIED VAPOR BARRIER REPAIR AT L/H WHEEL WELL. OK TO LOCATE AND DRILL HOLES.; [08] LOCATED & DRILLED HOLE TO REPAIRED VAPOR BARRIER WEB; AS PER REF. B737-7 SRM 51-40-05-0G-0; & DWG. 111A1000.; [09] APPLIED PRIMER & TOP COAT TO REPAIRED VAPOR BARRIER WEB; AS PER B737-7 AMM 51-2172-370-804; & 51-21-73-370-804.; [10] L/H VAPOR BARRIER WEB WILL BE INSTALLED ON CARD TTG8Q005YX3Z.; [11] VERIFIED STEPS 8; 9 AND 10. TASK C/W; [12] VERIFIED STEPS 8; 9 AND 10. TASK C/W; [13] VERIFIED STEP #1 IS(RII); [14] VERIFIED STEP # 3 AND 4 ARE (RII); [15] VERIFIED STEP #7 IS (RII); [16] REMOVED DAMAGED AND PREPARED FOR REPAIR VAPOR BARRIER AT LBL 25 STA 663.75 AS PER B737-700 SRM 51-70-04-2R-10.

More about the Boeing 737-7H4