Service difficulty report · Panel · Boeing 7377H4

Difficulty date
March 31, 2023
Submitted
April 25, 2023
Operation
Air carrier
Aircraft
N957WN
Make and model
Boeing 7377H4
Aircraft serial
41528
Aircraft time
38,518 hours, 23,626 cycles
Part
Panel
Condition
Delaminated
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

PANEL 193AR HAS DELAMINATION ON OUTER SURFACE<[01] IDENTIFIED PANEL MATERIAL IAW SRM 53-40-70-0I-1 FIG 2 TABLE 2 ITEM 18.<BR>FOUND DAMAGE TO BE OUT OF ALLOWABLE LIMITS IAW SRM 53-40-70-1A-1 PARA 4.A(6).<BR>DAMAGE WILL BE REPAIRED IAW SRM 51-70-05-2R-2 PER SRM 53-40-70-2R-1 TABLE 201.<BR>REMOVED DAMAGED SKIN AND CORE TO APROX 1' DIA.; CLEANED REPAIR AREA IAW SRM 51-70-05-2R-2 PARA 4.A-C.;[02] VALIDATED APPLICABILITY OF SRM 51-70-05-2R-2.;[03] VERIFIED CORRECTIVE ACTION 1 AND 2; VERIFIED MEASUREMENT TABLE;[04] APPLIED POTTING BMS 5-28TY7 LOT#AK1AP8072K; CURED WITH THERMOMETER ID:ATS2208 CAL DUE 10/2023; SANDED SMOOTH TO SURFACE AND CLEANED REPAIR AREA IAW SRM 51-70-05-2R-2 PARA 4.D(NOTE) AND SRM 51-70-05-2R-11 PARA 4.A-D.<BR>FABRICATED AND INSTALLED REPAIR PLIES USING BMS 8-79ST120 LOT#1520138-1 AND ADHESIVE BMS 5-129GR5 LOT#1521552-3; VACUUM BAGGED; LEAK CHECK GOOD AND SET TO CURE WITH HOTBONDER ID:ATS532 CAL DUE 06/2023 IAW SRM 51-70-05-2R-2 PARA 4.G-I.;[05] VERIFIED SUCCESSFUL CURE WAS COMPLETED; UNBAGGED REPAIR; AND SANDED REPAIR ALL IAW SRM 51-70-05-2R-2 PARA 4.I & 4.K.REFINISHED REPAIR AREA IAW AMM 51-21-99-300-802 PARA 3.C(1)(A-E)<BR><BR>REPAIRED DELAMINATION ON OUTER SURFACE ON PANEL 193AR IAW SRM 51-70-05-2R-2 AND SRM 51-70-05-2R-11;[09] VERIFIED CORRECTIVE ACTION 8

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