Service difficulty report · Floor Panel · Boeing 75724APF

Difficulty date
March 4, 2026
Submitted
March 30, 2026
Operation
Air carrier
Aircraft
N451UP
Make and model
Boeing 75724APF
Aircraft serial
27739
Aircraft time
41,230 hours, 23,656 cycles
Part
Floor Panel
Part number
146N543130
Condition
Corroded
Location
Zone 100
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

EXFOLIATION FLOOR PANEL RT SIDE AFT CARGO BS 1600-1560, STR 27 AND 28R. REMOVED CORROSION FROM FLOOR PANEL RT SIDE AFT CARGO. MAT LOSS MORE THAN 50%. MAX ALLOWABLE IS 10%. FOUND TO BE OUT OF LIMITS IAW SRM 53-00-53-1A-1 FIG 101. INSTALLED REPAIR DOUBLER IN RT SIDE AFT CARGO IAW SRM 51-70-11-0G-0 FIG 1 GUIDELINES AND SRM 51-40-02-0G-0.

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