Service difficulty report · Support · Boeing 7377H4

Difficulty date
April 6, 2025
Submitted
May 1, 2025
Operation
Air carrier
Aircraft
N221WN
Make and model
Boeing 7377H4
Aircraft serial
34259
Aircraft time
65,130 hours, 38,662 cycles
Part
Support
Condition
Cracked
Location
Zone 100
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) CRACK ON LOWER CHORD ASSY BS 663 AND RBL 10 AT LOWER FUSELAGE 2025-224536<[01] TOOLS USED: POWER PACK P/N: PE1068 S/N: PE0118-94826 DUE DATE: 24-SEP-25. THERMOMETER P/N: FLUKE 566 S/N: 65900156WS DUE DATE: 23-OCT-25.;[02] REPLACED LOWER CHORD ASSY BS 663 AND RBL 10 AT LOWER FUSELAGE IAW B737-700 SRM 51-40-02-0G AND DWG 111A1000 SHEET 180 REV. B .SEE INDIVIDUAL SIGN OFF BELOW.;[03] CORRECTED STEP 2.REPLACED LOWER CHORD ASSY BS 663 AND RBL 15 TO LBL 15 AT LOWER FUSELAGE IAW B737-700 SRM 51-40-02-0G AND DWG 111A1000 SHEET 180 REV. B .SEE INDIVIDUAL SIGN OFF BELOW.;[04] COMPLETED TASK CERTIFIED

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