Service difficulty report · Spar Web · Boeing 737*

Difficulty date
October 25, 2021
Submitted
November 23, 2021
Operation
Air carrier
Aircraft
N7833A
Make and model
Boeing 737*
Aircraft serial
30036
Aircraft time
52,438 hours, 34,472 cycles
System (JASC)
5711 · Wing Spar
Part
Spar Web
Condition
Corroded
Location
L/H 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 REAR SPAR WEB LOCATED IRSS 145.00 AT LT WING ; 2021-486815 / [01] TOOL USED: P/N: 45MG; S/N: 130060401; DUE DATE: 22-APR-22; [02] ULTRASONIC THICKNESS GAGE P/N:45MG; S/N: 130064101; DUE DATE: 11-MAY-22.; [03] APPLIED PROTECTION TREATMENT ON REAR SPAR WEB LOCATED IRSS 145.00 AT LT WING IAW B737-700 SRM 51-20-01; [04] REPAIRED REAR SPAR WEB LOCATED IRSS 145.00 AT LT WING IAW EA # 21-157-03275-WIP1. SEE INDIVIDUAL SIGNOFF BELOW.; [05] CORRECTED STEP 4<BR>REPAIRED REAR SPAR WEB LOCATED IRSS 145.00 AT LT WING IAW EA # 21-157-03275-WIP1 AND EA 21-157-03275. SEE INDIVIDUAL SIGNOFF BELOW.; [06] CERTIFIED WORK PERFORMED. <BR>SEE INDIVIDUAL SIGNOFFS BELOW.