Service difficulty report · Spar · Boeing 7377H4

Difficulty date
March 13, 2019
Submitted
March 7, 2022
Operation
Air carrier
Aircraft
N746SW
Make and model
Boeing 7377H4
Aircraft serial
29798
Aircraft time
69,717 hours, 40,989 cycles
System (JASC)
5711 · Wing Spar
Part
Spar
Condition
Corroded
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

R\H WING REAR SPAR HAS CORROSION AT TANK #2 BOOST PUMP LOWER BONDING STRAP CONNECTION POINT. / REMOVED CORROSION ON R/H WING REAR SPAR BOOST PUMP LOWER BONDING STRAP ATTACH POINT IAW SRM 51-10-02-0G-0. VERIFIED ALLOWABLE LIMITS; ORIGINAL .685' LOSS .126' REMAINING .559' OUT OF LIMITS IAW SRM 57-20-10-1A-1. REPAIRED R/H WING REAR SPAR WEB IAW AAR EA 190212 IR AND SWA EA 1-757-16098 REV IR. ORSS STATION 145 P/N 112A1101-4

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