Service difficulty report · Frame · Boeing 7377H4

Difficulty date
May 6, 2022
Submitted
June 9, 2022
Operation
Air carrier
Aircraft
N477WN
Make and model
Boeing 7377H4
Aircraft serial
33988
Aircraft time
60,414 hours, 35,826 cycles
Part
Frame
Condition
Cracked
Location
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

WHILE REMOVING THE STA 986 FLOORBEAM UPPER CHORD FOUND THE FRAME CRACKED AT STA 986 LBL 48 WL 207 CRACKED 986 FRAME / [01] REMOVED APU DUCT FROM STA 876-1020 AND AFT DRAIN HOSE AT STA 986 IAW SOPM 20-50-01;[02] REMOVED LOWER FRAME SECTION AT BS 986 STR 17L-22L IWA SRM 51-40-02-OG-O;[03] RECEIVED FABRICATED FRAME PART FROM OSS ALL WORK ACCOMPLISHED CUSTOMER RO#867079 AND LOCATED AND DRILLED PER DWG 147A1086 AND SRM 51-40-05;[

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