Service difficulty report · Spar · Boeing 73776Q

Difficulty date
March 24, 2020
Submitted
April 13, 2020
Operation
Air carrier
Aircraft
N550WN
Make and model
Boeing 73776Q
Aircraft serial
30279
Aircraft time
58,439 hours, 36,373 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 AND LOWER BONDING JUMPER FASTENER HOLES / REPAIRED LEFT WING SPARE WEB AT IFSS 119 AT BOOST PUMP BONDING JUMPERS IAW SOUTHWEST EA 20-157-00208 REV IR AND ATS ER 20-02287 REV IR

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