Service difficulty report · None · Boeing 7377H4

Difficulty date
August 22, 2022
Submitted
September 22, 2022
Operation
Air carrier
Aircraft
N489WN
Make and model
Boeing 7377H4
Aircraft serial
33855
Aircraft time
57,460 hours, 34,246 cycles
Part
None
Condition
Delaminated
Location
Rh 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

RIGHT WING O/B AFT FLAP HAS A DELAM ON I/B LOWER CORNER / DELAMINATION I/B LOWER CORNER UPPER SKIN . 8'X2' EXCEEDS ALLOWABLE LIMITS AS GIVEN IN SRM 57-53-01-1A-1 PARA 4 . A. (5) APPLY A PERMANENT REPAIR IAW SRM 57-53-01-2R-4 PARA 1. A. PARA 3. A. & B . PER SRM 51-70-10-2R-10 .ALIDATED REPAIR PER IAW SRM 57-53-01-2R-4 AND SRM 51-70-10-2R-0;[08] FABRICATED THE REPAIR DOUBLER AND FILLER FROM PRE-PRIMED 0.16' 7075 T6 ALUMINUM (LOT# 1351319-2) ACCORDING TO SRM 51-70-10-2R-0; PARA'S 8.A. AND 10.A.PREPARED REPAIR AREA FOR BONDING USING BMS 5-162 (BOEGEL) SURFACE TREATMENT (LOT#2018E) AND BMS 5-89; TY2 (LOT# 5110236-1) ALL ACCORDING TO SRM 51-70-10-2R-0; PARA'S 14; 15.A THRU 15.E.(2).; 15.F THRU 15.H.(1).(A)<BR><BR>APPLIED REPAIR PARTS TO THE REPAIR AREA USING BMS 5-101; GR 10 ADHESIVE (LOT# 1484596-1); AND BMS 5-121 POSITIONING FABRIC (LOT# 582593-1); VACUUM BAGGED REPAIR AREA FOR HEAT BLANKET CURE; ACCOMPLISHED VACUUM BLEED DOWN TEST (PASS); THEN CURED REPAIR AREA; ALL ACCORDING TO SRM 51-70-10-2R-0; PARA'S 18; AND 20.B.<BR><BR>REMOVED ADHESIVE FLASH; THEN ACCOMPLISHED VISUAL EXAMINATION AND TAP TEST (NO DISBONDS NOTED); ALL ACCORDING TO SRM 51-70-10-2R-0; PARA. 21. CLEANED THE REPAIR AREA AND SEALED THE EDGE OF THE DOUBLER USING BMS 5-95 SEALANT (LOT# 45101031F-14); ALL ACCORDING TO SRM 51-70-10-2R-0; PARA'S 22.A AND 22.B.;REFINISHED REPAIR AREA ACCORDING TO SRM 51-70-10-2R-0; PARA. 22.C; AND AMM 51-21-99-300-802; PARA. 3.C.(3

More about the Boeing 737-7H4