Service difficulty report · Panel · Boeing 737*

Difficulty date
October 23, 2021
Submitted
November 22, 2021
Operation
Air carrier
Aircraft
N450WN
Make and model
Boeing 737*
Aircraft serial
32470
Aircraft time
58,641 hours, 34,716 cycles
Part
Panel
Part number
193CR
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 193CR OUTER SKIN HAS A LARGE DISBOND IN CENTER OF PANEL. (MARKED) ; / [01] IDENTIFIED PANEL 193CR IAW SRM 53-40-70-0I-1 FIGURE 2 ITEM 9. <BR><BR>DAMAGE IS BEYOND ALLOWABLE LIMITS IAW SRM 53-40-1A-1 PARA 4.A.(6)(A).<BR><BR>DAMAGE WILL BE REPAIRED IAW SRM 51-70-05-2R-1 PER SRM 53-40-70-2R-1 PARA 4.B (1) TABLE 201.<BR><BR>REMOVED DELAMINATED SKINS ON OUTER SURFACE OF PANEL AND TAPER SANDED AREA (APPROX 5' X 15') IAW SRM 51-70-05-2R-1 PARA 4.A & 4.B. CORE IS IN GOOD CONDITION.; [02] UPON REMOVAL OF DAMAGE; FOUND DAMAGE TO EXTEND BEYOND ORIGINAL (5' X 15') TO A FINAL SIZE OF APPROX (12' X 18') TRIANGLUALR SHAPED. DISBOND EXTENDED UNDER REPAIR TO OUTER SURFACE (TTG8Q006WTSN). REMOVED COMPLETED REPAIR (TTG8Q006WTSN) TO OUTER SURFACE AND ALL DAMAGE ON OUTER SURFACE IAW SRM 51-70-05-2R-1 PARA 4.A & 4.B. CORE IS STILL IN GOOD CONDITION AS SIZE OF REPAIR HAS ONLY INCREASED. THIS REPAIR WILL NOW INCORPORATE CARD (TTG8Q006WTSN).; [03] UPDATED MEASUREMENTS ON CORRECTIVE ACTION LINE 1.; [04] VALIDATED APPLICABILITY OF REPAIR TO BE COMPLETED IAW SRM 51-70-05-2R-1.; [05] VERIFIED CORRECTIVE ACTION STEPS 1;2;3 AND 4.; [06] FABRICATED REPAIR PLIES USING BMS 8-79CL3ST120 LOT # 1472365-1 & BMS 8-79CL3ST1581 LOT # 1470662-1 IAW SRM 51-70-05-2R-1 PARA 4. C.; [07] INSTALLED REPAIR PLIES