Service difficulty report · Web · Boeing 7377H4

Difficulty date
November 4, 2024
Submitted
November 27, 2024
Operation
Air carrier
Aircraft
N426WN
Make and model
Boeing 7377H4
Aircraft serial
29830
Aircraft time
73,377 hours, 43,881 cycles
Part
Web
Condition
Corroded
Location
Zn 100 Fus Lower
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 ON BS 663 BULKHEAD WEB AT LBL55; WL190. STEP 5 OF EA 24-153-02933-WIP1 HAS US CONTACT ENGINEERING IF DISCREPANCIES ARE FOUND<[01] UPDATED MEASUREMENTS;[02] ACCOMPLISHED INSPECTIONS AND RE-WORK INSTRUCTIONS IAW EA 24-157-03091 (AD-N426WN-ATS(PAE)-REPAIR-BS 663 REAR SPAR WEB CORROSION ? LBL 60; WL 190);[03] VERIFIED CORRECTIVE ACTION STEP 2.

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