Service difficulty report · Spar · Boeing 7377H4

Difficulty date
December 7, 2020
Submitted
January 13, 2021
Operation
Air carrier
Aircraft
N434WN
Make and model
Boeing 7377H4
Aircraft serial
32454
Aircraft time
60,441 hours, 35,783 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 APPROXIMATELY AT LT WING AND WBL 94.24. REPAIRED LT WING FRONT SPAR WEB AT IFSS 120.00 AT FUEL BOOTS PUMP FAYING SURFACE, IAW EA NR 20-157-02599 REV IR AND EA 57-0854-20 REV 0 MEASURES OF THE REWORK AREA L=6.493'; W=3.901' MAX DEPTH=0.102' MATERIAL USED: ALUMINUM SHEET P/N 2024-T3 0.125' PO=2020 129976.

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