Service difficulty report · Bulkhead Web · Boeing 7377H4

Difficulty date
April 26, 2023
Submitted
June 1, 2023
Operation
Air carrier
Aircraft
N285WN
Make and model
Boeing 7377H4
Aircraft serial
32536
Aircraft time
51,630 hours, 31,054 cycles
Part
Bulkhead Web
Condition
Cracked
Location
Zn 100 Fus Lower
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

CRACK ON BS 663 VAPOR BARRIER BULKHEAD PRESSURE DECK WEB AT LBL 39 BS 663 WL 156.<[01] CORRECTION ON TASK DETAIL<BR>SHOULD STATE :<BR>CRACK ON BS 663 VAPOR BARRIER BULKHEAD AT LBL 39 BS 663 WL 156;[02] PART/MATERIAL IDENTIFICATION PER SRM 57-10-10-0I-1 FIGURE 2 TABLE 2 ITEM 4. <BR>CRACK IN THE VAPOR BARRIER EXCEEDS THE ALLOWABLE LIMITS AS GIVEN IN SRM 57-10-10-1A-2 PARA 4. D. REPAIR TO BE PERFORMED IAW SRM 51-70-04-2R-10 AS GIVEN IN SRM 57-10-10-2R-2 PARA 1. C. NOTE: THE ALTERNATIVE WET LAYUP REPAIR AS GIVEN IN SRM 51-70-04; REPAIR 10.;[03] VALIDATED REPAIR PER SRM 51-70-04-2R-10 [06] USING BMS9-3 STYLE 1581 GLASS LOT 1522395-2 & BMS8-301/EA9390 RESIN LOT JH2EAA8895. FABRICATED FWD & AFT REPAIR PLIES IAW SRM 51-70-04-2R-10 PARA 4. STEP D. OK TO LAY UP AFT SIDE REPAIR PLY.[17] ATTACHED THE CURE TAPES; RESTORED THE FINISH IAW SRM 51-70-04-2R-10 PARA 4 STEP H. PER GENERAL REPAIR SECTION SRM 51-70-04-2R-0 PARA 4. P. 2. (E). AND COMPLETED THE REPAIR IAW SRM 51-70-04-2R-10;

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