Service difficulty report · Flap · Boeing 7377H4

Difficulty date
July 23, 2022
Submitted
August 2, 2022
Operation
Air carrier
Aircraft
N210WN
Make and model
Boeing 7377H4
Aircraft serial
34162
Aircraft time
58,538 hours, 34,888 cycles
Part
Flap
Condition
Debonded
Location
L/H 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

LH O/B AFT FLAP LOWER SKIN AT I/B CORNER HAS AN AREA OF DISBOND. / [01] BOND TEST IAW B737 NDT PART 4; 51-00-05. DISBONDED AREA MARKED IN BLACK. TOOL#40082; DUE 11OCT22;[02] EVALUATED AND FOUND DISBOND AS MARKED. FOUND TO BE REPAIRABLE IAW SRM 57-53-01-2R-4 STEP 3 A-B; SRM 51-70-10-2R-4 STEP 3 D AND SRM 51-70-10-2R-0 REPAIR GENERAL.<BR><BR>REMOVED DAMAGE IAW SRM 51-70-10-2R-0 REPAIR GENERAL PARA 7.;[03] MADE REPAIR PARTS IAW SRM 51-70-10-2R-0 REPAIR GENERAL PARA 8. FILLER AND DOUBLER (A54056).;[04] REQUESTING OK TO APPLY BOEGEL AND ADHESIVE PRIMER;[05] VERIFIED ITEMS 2 THROUGH 4<BR>OK TO BOEGEL AND APPLY ADHESIVE PRIMER;[06] APPLIED BOEGEL (A129284) AND ADHESIVE PRIMER (J89501) IAW SRM 51-70-10-2R-0 REPAIR GENERAL PARA 14-15.;[07] VERIFIED PRIMER THICKNESS IAW SRM 51-70-10-2R-0. FOUND TO IN LIMITS. TOOL#21860; DUE 22SEP22;[08] REQUESTING OK TO BOND;[09] VERIFIED STEP 6 & 7 C/W; OK TO BOND GIVEN;[10] BONDED REPAIR IAW SRM 51-70-10-2R-0 REPAIR GENERAL PARA 20-21. CURED AT 250 DEGREES FOR 90MIN (AAR21183 EXP 4-5-23). TAP TEST GOOD.<BR><BR>REQUEST OK TO SEAL; CLEAN AND FINISH;[11] VERIFIED STEP 10 C/W; OK GIVEN TO CLEAN SEAL AND FINISH;[12] CLEANED; SEALED AND FINISHED IAW SRM 51-70-10-2R-0 REPAIR GENERAL PARA 22 AND AMM 51-21-99-300-801. SEALANT (A137594); PAINT (A99201).;[13] REPAIRED L/H O/B AFT FLAP LWR SKIN AT I/B CORNER IAW SRM 57-53-01-2R-4; 51-70-10-2R-0 REPAIR GENERAL AND AMM 51-21-99-300-801.;[14] VERIFIED STEPS 12 & 13 C/W; JOB COMPLETE; AUDIT C/W

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