Service difficulty report · Transition Panel · Boeing 75724APF

Difficulty date
January 13, 2025
Submitted
February 4, 2025
Operation
Air carrier
Aircraft
N420UP
Make and model
Boeing 75724APF
Aircraft serial
23907
Aircraft time
36,186 hours, 23,613 cycles
Part
Transition Panel
Part number
146N5391
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

AFT CARGO TRANSITION PANEL (CURRENTLY ON PANEL RACK) HAS CORROSION ON LOWER SURFACE AROUND 24 EA. NUTPLATES. (AREAS CIRCLED IN RED) DOT 142-366. CORROSION WAS REMOVED BY HAND IN 13 AREAS OF THE NUT PLATE.CHECK THE BOUNDARIES IN THE AFFECTED AREAS.DEEPEST THICKNESS: ORIGINAL 0.0063'' MAREIAL LOSS 0.004'' REMAINING MATERIAL 0.059''.THE 13 AREAS WERE FOUND WITHIN THE BOUNDARIES.IAW SRM 51-10-02 AND SRM 53-0053-1A-1. OSD: 1/31/2025

More about the Boeing 757-24APF