Service difficulty report · Spar · Boeing 7377H4

Difficulty date
June 12, 2021
Submitted
July 26, 2021
Operation
Air carrier
Aircraft
N441WN
Make and model
Boeing 7377H4
Aircraft serial
29837
Aircraft time
60,854 hours, 35,872 cycles
System (JASC)
5711 · Wing Spar
Part
Spar
Condition
Cracked
Location
Rt 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

CRACK FRONT SPAR ANGLE LOCATED ABOVE FUEL BOOST PUMP IFSS 120 APPROX AT RT WING ; 2021-269827 / [01] DIGITAL CALIPER P/N: 500-97-30; S/N: B20189526; DUE DATE: 22-NOV-21.; [02] PERFORMED FUEL LEAK DETECTION CHECK IN FRONT SPAR WEB LOCATED FUEL BOSS PUMP IFSS 120 APPROX AT RT WING IAW B737-700 AMM 28-11-00-790-801; NOT FOUND LEAK.; [03] REPLACED FRONT SPAR ANGLE LOCATED ABOVE FUEL BOOST PUMP IFSS 120 APPROX AT RT WING IAW SRM B737-700 51-40-02; 51-10-02 ITEM 9 AND DRAWING 116A3001 REV -; [04] REPLACED FRONT SPAR ANGLE LOCATED ABOVE FUEL BOOST PUMP IFSS 120 APPROX AT RT WING IAW SRM B737-700 51-40-02; 51-10-02 ITEM 9 AND DRAWING 116A3001 REV -

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