Service difficulty report · Beam · Boeing 7377H4

Difficulty date
July 29, 2021
Submitted
September 14, 2021
Operation
Air carrier
Aircraft
N491WN
Make and model
Boeing 7377H4
Aircraft serial
33867
Aircraft time
53,758 hours, 31,898 cycles
Part
Beam
Condition
Corroded
Location
Bs 259 L-Rbl 10
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 259.5 LATERAL BEAM UPPER FLANGE ALONG AFT EDGE LBL 10 TO RBL 10. ; / [01] REMOVED CORROSION ON LATERAL BEAM UPPER FLANGE P/N141A7434 BS259 LBL10-RBL10 WL207 20'X1' AREA I.A.W SRM 51-10-02-0G-0; [02] REMOVED FASTENER ON LATERAL BEAM UPPER FLANGE BS259 LBL10-RBL10 WL207 I.A.W SRM 51-40-02-0G-0; [03] VERIFIED CORROSION REMOVAL ON LATERAL BEAM UPPER FLANGE P/N141A7434 BS259 LBL10-RBL10 WL207 20'X1' AREA I.A.W SRM 51-10-02-0G-0; [10] VERIFIED REPAIR COMPLETED ON EA 21-153-02285-WIP1; TASK ID TTG8Q00641UJ.; [11] VERIFIED REPAIR COMPLETED ON EA 21-153-02285-WIP1; TASK ID TTG8Q00641UJ.

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