Service difficulty report · Panel · Boeing 7377H4

Difficulty date
April 11, 2022
Submitted
May 2, 2022
Operation
Air carrier
Aircraft
N475WN
Make and model
Boeing 7377H4
Aircraft serial
32474
Aircraft time
59,744 hours, 35,276 cycles
Part
Panel
Condition
Delaminated
Location
Fuselage
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

PANEL 193AR IS DELAMINATED ON INNER SURFACE 7.5' AFT OF FWD EDGE; 20' OB OF IB EDGE / [01] IDENTIFIED MATERIAL OF PANEL 193AR IAW SRM 53-40-70-0I-1 FIGURE 1-2; ITEM 18; TABLE 2<BR><BR>DAMAGE IS OUT OF ALLOWABLE DAMAGE LIMITS IAW SRM 53-40-70-1A-1 TABLE 101; PARA 4.B(6)<BR><BR>REPAIR TO BE ACCOMPLISHED IAW SRM 51-70-05 PER SRM 53-40-70-2R-1 PARA 4.B(1) AND 4.D(1); TABLE 202;[02] CORRECTION: INCORRECT TABLE REFERENCED<BR><BR>REPAIR TO BE ACCOMPLISHED IAW SRM 51-70-05 PER SRM 53-40-70-2R-1 PARA 4.B(1) AND 4.D(1); TABLE 201;[03] VALIDATED REPAIR PER SRM 51-70-05-2R-2;[04] VISUALLY EXAMINED EXTENT OF DAMAGE; TAP TESTED - DISBOND NOTED; REMOVED 2' DIA OF INNER SKIN AND PARTIAL DEPTH CORE; CLEANED REPAIR AREA IAW SRM 51-70-05-2R-2 PARA 4.A-B; [06] POTTED REPAIR AREA WITH BMS 5-28 TY 7 POTTING (CG1305) LOT AK1IP9146K AND SET FOR ROOM TEMP CURE IAW SRM 51-70-05-2R-2 PARA 4.D 'NOTE' AND SRM 51-60-05-2R-11 PARA 4.A-B;[07] COMPLETED SUCCESSFUL POTTING CURE AT ROOM TEMPERATURE; LIGHTLY SANDED REPAIR AREA FLUSH; AND CLEANED. FABRICATED AND INSTALLED REPAIR PLIES USING BMS8-79CL3ST120 LOT#1488452-1 AND BMS5-129TY2 GR05 LOT#1483858-1. INSTALLED VACUUM BAG; LEAKED CHECKED GOOD USING VACUUM GAUGE ID:E11543 S/N:UNKNOWN. IAW SRM 51-70-05-2R-11 PAR.4 B-E & SRM 51-70-05-2R-2 PAR.4 F-H;[10] REFINISHED REPAIR AREA IAW SRM 51-70-05-2R-2 PARAGRAPH 4.K

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