Service difficulty report · Bulkhead Web · Boeing 7377H4

Difficulty date
August 9, 2021
Submitted
August 31, 2021
Operation
Air carrier
Aircraft
N965WN
Make and model
Boeing 7377H4
Aircraft serial
36677
Aircraft time
32,936 hours, 20,041 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

B.S. 663 LOWER COMPOSITE BULKHEAD IS CRACKED AT R.B.L. 31; W.L. 150. ; / FOUND DAMAGE TO BE OUT OF ALLOWABLE LIMITS IAW SRM 57-10-10-1A-2 PARA 4.D.(1)(A)(1). REMOVED DAMAGE (AT MULTIPLE LOCATIONS) AND CONTAMINATION; PREPARED SURFACE; AND CLEANED REPAIR AREA IAW SRM 51-70-04-2R-10 PARA 4A-C. FABRICATED REPAIR PLIES FROM BMS9-3TYH2CL7 LOT 1458851-1 IAW SRM 51-70-04-2R-10 PARA 4.D OK TO INSTALL REPAIR PLIES. INSTALLED PLIES WITH BMS8-301 CLASS1 LOT JH9LAC5098 VACUUM BAGGED AND VERIFIED 5X5 IS GOOD WITH VACUUM GAUGE ID: ATS2438 S/N: UNKNOWN IAW SRM 51-70-04-2R-10 PARA 4.D-E.; [07] VERIFIED CORRECTIVE ACTION ITEM 6; [08] SET PLIES TO CURE USING HOTBONDER ID: ATS883 S/N: 15112530 IAW SRM 51-70-04-2R-10 PARA 4.F.; [09] CURED; UNBAGGED; TRIMMED; AND CLEANED REPAIR PLIES IAW SRM 51-70-04-2R-10 PARA 4F. REQUEST POST CURE NDI. <BR>HOTBONDER ATS883 SN: 15112530; [10] INSPECTED ACTION 8;9; [11] UT INSPECTED REPAIR IAW 737 NDTM PART 4 51-00-02; NO DISBONDS NOTED.<BR>CAL ID ATS2031 E650; REPAIRED CRACKED B.S. 663 LOWER COMPOSITE BULKHEAD AT R.B.L 31; W.L 150 IAW 51-70-04-2R-10; [13] REPAIRED CRACKED B.S. 663 LOWER COMPOSITE BULKHEAD AT R.B.L 31; W.L 150 IAW 51-70-04-2R-10 <BR><BR>CHANGED TO REPAIRED CRACKED B.S. 663 LOWER COMPOSITE BULKHEAD AT R.B.L 31; W.L 150 IAW SRM 51-70-04-2R-10; [14] VERIFIED CORRECTIVE ACTION 12 AND 13 PER AMM 51-21-72-370-802 AND SRM 51-70-04-2R-10.<BR><BR>VERIFIED COMPLETION OF B.S. 663 LOWER COMPOSITE BULKHEAD AT R.B.L 31; W.L 150 PER SRM 51-70-04-2R-10 REPAIR

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