Service difficulty report · Skin · Boeing 75724APF

Difficulty date
July 16, 2026
Submitted
September 11, 2026
Operation
Air carrier
Aircraft
N455UP
Make and model
Boeing 75724APF
Aircraft serial
25476
Aircraft time
46,102 hours, 22,631 cycles
Part
Skin
Part number
148N377017
Condition
Corroded
Location
Zone 300
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

APU COMPARTMENT TAILCONE LOWER BILGE ALUMINUM HONEYCOMB SKIN PANELS BETWEEN BS 1963 AND 1992 HAS AREAS OF CORROSION TO INCLUDE ATTACHMENT TO FRAMES WITH AREAS OF MISSING FINISH. RL051 RE-INSTALLED LWR BILGE ALUM HONEYCOMB SKIN PNL BTWN STA 1963 & 1992 AT APU COMP TAIL CONE REF. SRM 51-40-02-0G-0. APPLIED FILLET SEAL ON LWR BILGE ALUM HONEYCOMB SKIN PNL BTWN STA 1963 & 1992 REF. AMM 51-31-01-392-039.

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