Service difficulty report · Floor Support · Boeing 7378H4

Difficulty date
May 9, 2024
Submitted
June 6, 2024
Operation
Air carrier
Aircraft
N8690A
Make and model
Boeing 7378H4
Aircraft serial
36916
Aircraft time
26,677 hours, 12,980 cycles
Part
Floor Support
Part number
UNKNOWN
Condition
Corroded
Location
Bs 947 Lbl50
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 AROUND FITTING ON FLOOR SUPPORT BS 947+3; LBL 50 (MARKED)<[01] REMOVED DAMAGE ON BS 947-967 LBL 50 FLOOR SUPPORT UPPER SURFACE IN AN AREA OF 1'X 1'; ORIGINAL THICKNESS IS 0.205' REMAINING THICKNESS IS 0.105' CORROSION FOUND TO BE OUT OF LIMITS I.A.W SRM 53-70-51-1A-1 ALLOWABLE DAMAGE 1 .<BR>TOOL USED ID: ATS2472 DUE: 12/2024.LOCATED AND DRILLED NEW FLOOR SUPPORT BS947-967; LBL50 WL208 IAW SRM 51-40-05-0G-0 AND DWG 147A5650.REMOVE AND REINSTALL FLOOR SUPPORT TO BE DOCUMENTED ON NRC TTG8Q00T88KY FLOOR BEAM BS947 UPPER T-CHORD REPAIR;[02] VERIFIED CORRECTIVE ACTION 1.

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