Service difficulty report · Panel · Boeing 7377H4

Difficulty date
July 24, 2021
Submitted
September 15, 2021
Operation
Air carrier
Aircraft
N447WN
Make and model
Boeing 7377H4
Aircraft serial
33720
Aircraft time
58,733 hours, 34,620 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 194CR OUTER SURFACE DELAMINATION; 14' FROM I/B END; 8.25' FROM FWD EDGE ; / [01] PART/MATERIAL IDENTIFIED IAW SRM 53-60-70-0I-1 FIG 2 TABLE 2 ITEM 6 .<BR>7/16 DIA DELAMINATION EXCEEDS THE ALLOWABLE LIMITS AS GIVEN IN SRM 53-60-70-1A-1 PARA 4 A (6) .<BR>REPAIR TO BE PERFORMED IAW SRM 51-70-05-2R-2 AS GIVEN IN SRM 53-60-70-2R-1 PARA 4 D REF TABLE 201; [02] VALIDATED REPAIR PER SRM 51-70-05-2R-2; [03] PERFORMED DAMAGE REMOVAL & SURFACE PREPARATION STEPS IAW SRM 51-70-05-2R-2 PARA 4 STEPS A ; B ; & C .; [04] APPLIED AN ALTERNATIVE CORE REPAIR AS GIVEN IN SRM 51-70-05-2R-11 PARA 4 STEPS A-D REF CURE IAW SRM 51-70-04-2R-0 TABLE 204 ;6 HOUR AT ROOM TEMP. PER SRM 51-70-05-2R-2 PARA 4 D; [05] BMS 8-78 STYLE 120 GLASS LOT 1454844-1 & BMS 5-129 GR5 ADHESIVE LOT 1457270-4. FABRICATED REPAIR PLIES .<BR>LAID UP THE REPAIR ;VACUUM BAGGED ;LEAK CHECKED & SET TO CURE IAW SRM 51-70-05-2R-2 PARA 4 STEPS F G & H; [06] USING CALL TOOL HOT BONDER ID NCX000526 SN 12051216 .<BR>CURED THEN EXAMINED THE REPAIR IAW SRM 51-70-05-2R-2<BR>PARA 4 STEP I .; [07] REJECT- REPAIR TO 194CR OUTER SURFACE 14' FROM I/B END 8.25' FROM FWD EDGE WAS ACCOMPLISHED WITHOUT QC DAMAGE REMOVAL VERIFICATION<BR>GENERATED FAULT TTG8Q005Z3UY; [08] NO FURTHER UPDATES REQUIRED FOR THIS FAULT; INITIAL REPAIR REJECTED AND WILL BE REMOVED AND REPAIRED ON FAULT TTG8Q005Z3UY.; [09] VERIFIED THIS FAULT WILL BE ACCOMPLISHED ON FAULT TTG8Q005Z3UY

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