Service difficulty report · Panel · Boeing 73773V

Difficulty date
July 30, 2021
Submitted
September 3, 2021
Operation
Air carrier
Aircraft
N7839A
Make and model
Boeing 73773V
Aircraft serial
30243
Aircraft time
57,802 hours, 35,522 cycles
Part
Panel
Part number
621QB
Condition
Delaminated
Location
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

PANEL 621QB HAS DELAMINATION ON OUTER SURFACE ; / DAMAGE IS BEYOND ALLOWABLE LIMITS IAW SRM 57-41-01-1A-1 PARA 4.A(2)(A). REMOVED DAMAGED OUTER SKIN AND PARTIAL DEPTH CORE (1.0' DIA) AND CLEANED ALL IAW SRM 51-70-05-2R-2 PARA 4.A - 4.C WITH NO CONTAMINATION NOTED. OK TO POT CORE.; [02] VALIDATED APPLICABILITY OF REPAIR TO PANEL 621QB TO BE COMPLETED IAW SRM 51-70-05-2R-2 AND SRM 51-70-05-2R-11.; [03] VERIFIED OUT OF LIMITS; DAMAGE REMOVAL AND OK TO POT CORE VALIDATED APPLICABILITY OF REPAIR TO PANEL 621QB TO BE COMPLETED IAW SRM 51-70-05-2R-2 AND SRM 51-70-05-2R-11.; [04] APPLIED POTTING COMPOUND BMS5-28 TY7 LOT#AK1CP4127K USING SCALE ID:ATS2775 S/N:P1662216; CURED USING THERMOMETER ID:ATS2402 S/N:190204418; SANDED TO CONTOUR. FABRICATED; INSTALLED REPAIR PLIES USING BMS8-79 ST120 LOT#1462652-1; ADHESIVE BMS5-129 GR05 LOT#1461506-1; VACUUM BAGGED; CHECKED FOR LEAKS. LEAK CHECK GOOD. SET TO CURE USING HEATCON ID:IS000678 S/N:12071586 IAW SRM 51-70-05-2R-11.PARA 4.A-E; SRM 51-70-05-2R-2.PARA 4.D.NOTE; G-I REMOVED VACUUM BAG; AND SANDED LIGHTLY IAW SRM 51-70-05-2R-2 PARA 4.IREFINISHED OUTER SURFACE OF PANEL IAW SRM 51-70-05-2R-2 PARA 4.K. PANEL 621QB WITH DELAMINATION ON OUTER SURFACE WAS REPAIRED IAW SRM 51-70-05-2R-2.;

More about the Boeing 737-73V