Service difficulty report · Spar · Boeing 7377H4

Difficulty date
March 11, 2020
Submitted
April 14, 2020
Operation
Air carrier
Aircraft
N427WN
Make and model
Boeing 7377H4
Aircraft serial
29831
Aircraft time
61,697 hours, 36,249 cycles
System (JASC)
5711 · Wing Spar
Part
Spar
Condition
Corroded
Location
Lt Wing
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*** EVIDENCE OF CORROSION AT LEFT WING FRONT SPAR WEB AT IFSS 119 COMMON TO BOOST PUMP UPPER BONDING JUMPER FASTENER HOLE / CORROSION AT LEFT WING FRONT SPAR WEB AT IFSS 119 COMMON TO THE BOOST PUMP UPPER BONDING JUMPER FASTENER HOLE WAS REPAIRED IAW ATS ER 20-02244 REV IR DATED 08APR20 AND EA 20-157-00204 REV IR.

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