Service difficulty report · Bulkhead · Boeing 73771B

Difficulty date
October 18, 2022
Submitted
November 11, 2022
Operation
Air carrier
Aircraft
N7854B
Make and model
Boeing 73771B
Aircraft serial
29372
Aircraft time
45,663 hours, 30,470 cycles
Part
Bulkhead
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

CRACKED LOWER L/H COMPOSITE BULKHEAD AT BS663 LBL33 WL161. REMOVED DAMAGED & CONTAMINATED FIBERGLASS PLIES FROM 5EA AREAS. PREPARED AND CLEANED 5EA AREAS FOR REPAIRS. WORK ACCOMPLISHED IAW SRM 51-70-04-2R-10 PAR 4.A-C. INSPECTED AND VERIFIED CORRECTIVE ACTIONS 1; 2 AND 3. VERIFIED MEASUREMENTS TABLE. FABRICATED REPAIR PLIES IAW SRM 51-70-04-2R-10 PARAGRAPH 4.D. INSPECTED AND VERIFIED CORRECTIVE ACTION 5. OKAY TO INSTALL REPAIR PLIES PER SRM 51-70-04-2R-10.VERIFIED MEASUREMENTS TABLE. INSTALLED PLIES, VACUUM BAGGED PLIES AND VERIFIED SATISFACTORY 5X5 IAW SRM 51-70-04-2R-10 PARAGRAPH 4.D-E. UNBAGGED PLIES AND LIGHTLY SANDED IAW SRM 51-70-04-2R-10 PARAGRAPH 4.F AND H. PERFORM POST CURE NDI IAW SRM 51-70-04-2R-10 PARAGRAPH 4.G; POST REPAIR UT INSPECTED PER NDT PART 4 51-00-02. NO DEFECTS FOUND. REFINISHED REPAIR AREAS IAW SRM 51-70-04-2R-10-2R-10 PARAGRAPH 4.H

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