Service difficulty report · Doubler · Boeing 75724APF

Difficulty date
April 18, 2025
Submitted
May 14, 2025
Operation
Air carrier
Aircraft
N447UP
Make and model
Boeing 75724APF
Aircraft serial
27736
Aircraft time
35,880 hours, 20,372 cycles
Part
Doubler
Part number
311N504662
Condition
Corroded
Location
Zone 400
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

NR 1 ENG I/B PYLON PPS. 1.8317 AFT LOWER INSIDE PANEL 433HR HAS CORROSION. BLUE DOT TRIMMED OUT CORROSION DAMAGE FOR ACCOMPLISH STEP 2 OF E.A.# 757-5450-27-A3910 PRELIMINARY 1. COMPLETED THE REPAIR FOR ACCOMPLISH STEP 27 OF E.A.# 757-5450-27-A3910 PRELIMINARY 3.

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