Service difficulty report · Web · Boeing 7377H4

Difficulty date
June 14, 2022
Submitted
July 25, 2022
Operation
Air carrier
Aircraft
N478WN
Make and model
Boeing 7377H4
Aircraft serial
33989
Aircraft time
60,197 hours, 35,659 cycles
Part
Web
Condition
Corroded
Location
Aft Fuselage
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* AFT CABIN LT SIDE FLOOR WEB BETWEEN STA 1016 AND AFT PRESSURE BULKHEAD W/L 208.1 HAS CORROSION AS MARKED. 124-016 / [01] REMOVED EXFOLIATED WEB AT AFT CABIN FLOOR BETWEEN STA 1016 AND AFT PRESSURE BULKHEAD WL 208.1 IAW SRM 51-40-02-0G-0.;[02] RECEIVED NEW FLOOR WEB P/N 147A5620U15 PO# 1728471;[10] OK TO INSTALL NEW WEB PART.;[11] MIXED 0870C080BM654SK SEALANT AT 22:00 06/21/22. SQUEEZE OUT TIME BY 06:00 06/25/22.;[12] PARTIALLY INSTALLED NEW WEB AT AFT CABIN FLOOR BETWEEN STA 1016 AND AFT PRESSURE BULKHEAD WL 208.1 IAW SRM 51-40-02-0G-0 AND DWG# 147A5600.;[13] VERIFIED AND INSPECTED STEP#11; AND#12.;[14] COMPLETED INSTALLATION OF NEW WEB AT AFT CABIN FLOOR BETWEEN STA 1016 AND AFT PRESSURE BULKHEAD WL 208.1 IAW SRM 51-40-02-0G-0 AND DWG# 147A5600.;

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