Service difficulty report · Floorbeam · Boeing 75724APF

Difficulty date
January 11, 2025
Submitted
February 4, 2025
Operation
Air carrier
Aircraft
N420UP
Make and model
Boeing 75724APF
Aircraft serial
23907
Aircraft time
36,193 hours, 23,618 cycles
Part
Floorbeam
Part number
143N5045
Condition
Corroded
Location
Zone 200
Stage of operation
IN
How discovered
V
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

FLOOR BEAM STA 560 BTWN BL-0 AND LBL 24.75 IS CORRODED. DOT 142-326. EVALUATED DAMAGE IN FLOOR BEAM STA 560 BTWN BL-0 AND LBL24.75.:P1)ORIGINAL THICKNISS 0.220'' MATERIAL LOSS 0.010'' MAXIMUN ALLOWABLE 0.022'' MATERIAL REMANING 0.210''.P2) ORIGINAL THICKNISS 0.220'' MATERIAL LOSS 0.008'' MAXIMUN ALLOWABLE 0.022'' MATERIAL REMANING 0.212''FOUND WITHIN LIMITS .IAW SRM 53-00-51-1A-1.

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