Service difficulty report · Skin · Boeing 7377H4

Difficulty date
March 26, 2025
Submitted
May 5, 2025
Operation
Air carrier
Aircraft
N221WN
Make and model
Boeing 7377H4
Aircraft serial
34259
Aircraft time
65,130 hours, 38,662 cycles
Part
Skin
Condition
Debonded
Location
Zone 500 Flap
Stage of operation
IN
How discovered
V
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

CUSTOMER REQUEST - DEBONDED OB AFT FLAP ON IB SIDE AT LT WING 2025-224275<[01] TOOL USED CALIPER PN: 8647A42; SN: A22356048; DUE DATE: 25/JUL/25.;[02] TOOL USED: AUDIBLE BOND TESTER; P/N S-3; S/N: 064; CAL DUE DATE: 27-AUG-25;[03] TOOL USED ON STEP 18 ULTRASONIC FLAW DETECTOR P/N: EPOCH 650; S/N: 190776902; CAL DUE DATE: 15-OCT-25;[04] PERFORMED INTERIM REPAIR ON OB AFT FLAP ON IB SIDE AT LT WING IAW B737-700 SRM 57-53-01-2R-16 REPAIR 16. AND THE REPAIR REQUIRES TAP TEST INSPECTION EVERY 6;875 FC OR 30 MONTHS WHICHEVER COMES FIRST. SEE INDIVIDUAL SIGNOFF BELOW.;[05] PERFORMED INTERIM REPAIR ON OB AFT FLAP ON IB SIDE AT LT WING IAW B737-700 SRM 57-53-01-2R-16 REPAIR 16. AND THE REPAIR REQUIRES TAP TEST INSPECTION EVERY 6;875 FC OR 30 MONTHS WHICHEVER COMES FIRST. SEE INDIVIDUAL SIGNOFF BELOW.;[06] CORRECTIVE ACTION 5 CORRECTED. PERFORMED INTERIM REPAIR ON OB AFT FLAP ON IB SIDE AT LT WING IAW B737-700 SRM 57-53-01-2R-16 REPAIR 16. AND THE REPAIR REQUIRES TAP TEST INSPECTION EVERY 6;875 FC OR 30 MONTHS WHICHEVER COMES FIRST. SEE INDIVIDUAL SIGNOFF BELOW. RII ACCOMPLISHED

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