Service difficulty report · Bulkhead · Boeing 7378H4

Difficulty date
April 14, 2022
Submitted
May 2, 2022
Operation
Air carrier
Aircraft
N8321D
Make and model
Boeing 7378H4
Aircraft serial
36687
Aircraft time
31,939 hours, 14,343 cycles
Part
Bulkhead
Condition
Cracked
Location
Center Wing
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 R/H COMPOSITE BULKHEAD AT BS663 RBL35 WL154. / [01] IDENTIFIED PART AND MATERIAL IAW SRM 57-10-10-0I-2FIGURES 1-2; TABLE 2; ITEM [4].<BR>CRACK DAMAGE WAS FOUND TO BE OUT OF ALLOWABLE DAMAGE LIMITS IAW SRM 57-10-10-1A-2 PAR 4.D (1) (A) 1) AND FIGURE 101; SHEET 2.<BR>REPAIR WILL BE ACCOMPLISHED IAW SRM 51-70-04-2R-10 AS DIRECTED PER SRM 57-10-10-2R-2 PAR 1.C 'NOTE'.;[02] DETERMINED EXTENT OF DAMAGE VIA VISUAL METHOD.<BR>REMOVED DAMAGED AND CONTAMINATED FIBERGLASS PLIES FROM DISCREPANT AREA. PREPARED REPAIR AREA FOR REPAIR AND CLEANED.<BR>WORK ACCOMPLISHED IAW SRM 51-70-04-2R-10 PAR 4.A-C.;[03] VALIDATED REPAIR PER SRM 51-70-04-2R-10;[04] VERIFIED ACTION STEPS 1 -3. VERIFIED APPLICABILITY OF SRM 51-70-04-2R-10;[05] FABRICATED REPAIR PLIES USING FIBERGLASS BMS 9-3; TYPE H2; CLASS 7; STYLE 1581; LOT# 1475360-2. <BR>WORK ACCOMPLISHED IAW SRM 51-70-04-2R-10 PAR 4.D. <BR>OK TO INSTALL REPAIR PLIES.;[11] REFINISHED REPAIR AREA IAW SRM 51-70-04-2R-10 PARA 4H.;[12] FINAL INSPECTION. JOB COMPLETE PER SRM 51-70-04-2R-10.;[13] FINAL INSPECTION. JOB COMPLETE PER SRM 51-70-04-2R-10.

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