Service difficulty report · Spar · Boeing 7377H4

Difficulty date
July 26, 2021
Submitted
September 7, 2021
Operation
Air carrier
Aircraft
N442WN
Make and model
Boeing 7377H4
Aircraft serial
32459
Aircraft time
60,608 hours, 35,906 cycles
System (JASC)
5711 · Wing Spar
Part
Spar
Condition
Corroded
Location
Lt 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

CORROSION FRONT SPAR WEB LOCATED FUEL BOOST PUMP IFSS 120 APPROX AT LT WING ; 2021-341014 / [01] TOOL USED P/N:NORTEC 500D; S/N:N500X1693P030456; CAL DUE DATE:30-NOV-21; [02] TOOL USED P/N:NORTEC 500D; S/N:N500X1693P030456; CAL DUE DATE:30-NOV-21; [03] P/N: 45MG; S/N: 130060401; DUE DATE: 22-APR-22; [04] TOOL USED DIGITAL CALIPER P/N: DIGITAL 150 S/N:AE-412610 DUE DATE:21-MAY-22.; [05] SUMMARY EA 21-157-02378 HAS BEEN APPROVED; ACTIVATED; AND ADDED AS A SUBTASK TO FAULT TTG8Q005Y615.; [06] INSTALLED BONDING JUMPER ON FUEL BOOST PUMP FRONT SPAR LT WING IAW B737-700 AMM 28-22-41-400-801 STEP 3.H.(23).(A)(C) THRU 3.H(23).(F).2).TOOLS USED BONDING MILLIOHMETER PN 620LK S/21A3028 DUE DATE 24-FEB-22; [07] REPAIRED FRONT SPAR WEB LOCATED FUEL BOOST PUMP IFSS 120 APPROX AT LT WING IAW EA# 21-157-02378-WIP1 REV 1 AND EA# 21-157-02378 REV 1. THIS REPAIR IS CLASSIFIED AS MINOR AND CATEGORY A. NOT FURTHER ACTION OR INSPECTION REQUIRED.; [08] TASK COMPLETED; RII.<BR><BR>REPAIRED FRONT SPAR WEB LOCATED FUEL BOOST PUMP IFSS 120 APPROX AT LT WING IAW EA# 21-157-02378-WIP1 REV 1 AND EA# 21-157-02378 REV 1. THIS REPAIR IS CLASSIFIED AS MINOR AND CATEGORY A. NOT FURTHER ACTION OR INSPECTION REQUIRED.

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