Service difficulty report · Support · Boeing 7377H4

Difficulty date
May 9, 2025
Submitted
June 11, 2025
Operation
Air carrier
Aircraft
N900WN
Make and model
Boeing 7377H4
Aircraft serial
32544
Aircraft time
57,299 hours, 34,643 cycles
Part
Support
Condition
Corroded
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

CORROSION ON SUPPORT ZEE LOCATED BTW BS 727E TO BS 767 RBL 22 WL 156.1 AT CARGO COMPARTMENT 2025-309359<[01] TOOL USED ON STEP 3: ULTRASONIC THICKNESS GAUGE P/N 45MG; S/N 130066701 DUE DATE JUL-12-2025;[02] REPLACED SUPPORT ZEE; REPAIR SPLICE 1(EA) AND FASTENERS LOCATED BETWEEN BS 727 TO BS 767 AND RBL 22 WL 156.1 AT AFT CARGO COMPARTMENT IAW B737-700 SRM 51-40-02 AND DWG: 146A7500; SHEET: 113; REV: ?.<BR>SEE INDIVIDUAL SIGN OFF BELOW.;[03] CONPLETED STEP 2<BR>REPLACED SUPPORT ZEE; REPAIR SPLICE 1(EA) AND FASTENERS LOCATED BETWEEN BS 727 TO BS 767 AND RBL 22 WL 156.1 AT AFT CARGO COMPARTMENT IAW B737-700 SRM 51-40-02 AND DWG: 146A7500; SHEET: 113; REV: ?. AND 146A7502 SHEET 49 REV - .SEE INDIVIDUAL SIGN OFF BELOW.;[04] CORRECTED STEP 3<BR>REPLACED SUPPORT ZEE; REPAIR SPLICE 1(EA) AND FASTENERS LOCATED BETWEEN BS 727 TO BS 767 AND RBL 22 WL 156.1 AT AFT CARGO COMPARTMENT IAW B737-700 SRM 51-40-02 AND DWG: 146A7500; SHEET: 113; REV: ?. AND 146A7502 SHEET 49 REV - .SEE INDIVIDUAL SIGN OFF BELOW.;[05] REPLACED SUPPORT ZEE; REPAIR SPLICE 1(EA) AND FASTENERS LOCATED BETWEEN BS 727 TO BS 767 AND RBL 22 WL 156.1 AT AFT CARGO COMPARTMENT IAW B737-700 SRM 51-40-02 AND DWG: 146A7500; SHEET: 113; REV: ?. AND 146A7502 SHEET 49 REV - .SEE INDIVIDUAL SIGN OFF BELOW.<BR>TASK CERTIFIED

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