Service difficulty report · Bulkhead · Boeing 73776N

Difficulty date
May 4, 2022
Submitted
May 31, 2022
Operation
Air carrier
Aircraft
N7733B
Make and model
Boeing 73776N
Aircraft serial
32678
Aircraft time
50,055 hours, 25,216 cycles
Part
Bulkhead
Condition
Cracked
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 LBL32 WL156. IDENTIFIED LOWER L/H COMPOSITE BULKHEAD AT BS663 LBL32 WL156 IAW SRM 57-10-10-0I-2 FIGURE 2; SHEET 1; TABLE 2; ITEM 4.DAMAGE NOTED IS OUT OF ALLOWABLE DAMAGE LIMITS IAW SRM 57-10-10-1A-2 PAR 4D(1).REPAIR TO BE ACCOMPLISHED IAW SRM 51-70-04-2R-10 PER SRM 57-10-10-2R-2 PAR 1C. STOP DRILLED CRACK; REMOVED DAMAGE FROM BOTH FWD AND AFT FACE SHEETS; CLEANED IAW SRM 51-70-04-2R-10 PAR 4A-C. VALIDATED REPAIR PER SRM 51-70-04-2R-10; FABRICATED REPAIR PLIES OUT OF BMS 9-3 ST 1581 LOT#1393735-8 IAW SRM 51-70-04-2R-10 PAR 4D. INSTALLED REPAIR PLIES USING BMS 8-301 CL1 GR1 LOT#JH1GAA7833; VACUUM BAGGED; UNBAGGED AND LIGHTLY SANDED REPAIR PLIES IAW SRM 51-70-04-2R-10 PARA 4F;HREFINISHED REPAIR AREAS IAW SRM 51-70-04-2R-10 PARA 4.H;

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