Service difficulty report · Gusset · Boeing 75724APF

Difficulty date
August 4, 2026
Submitted
September 10, 2026
Operation
Air carrier
Aircraft
N461UP
Make and model
Boeing 75724APF
Aircraft serial
28265
Aircraft time
43,558 hours, 22,019 cycles
Part
Gusset
Part number
148N66132
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

APU COMPARTMENT FWD BULKHEAD FWD SIDE BS 1885.2, LBL-12 & RBL-9. EXTENSIVE CORROSION. INSTALLED ONE SPLICE RING, ONE LOWER FRAME, ONE INNER TEE CHORD & TWO BRACKET ASSY (GUSSETS LT, RT) AT APU COMPARTMENT FWD BULKHEAD FWD SIDE BS 1885.2 LBL-12 & RBL-9 IAW SRM 51-40-02-0G-0. TREATED, PRIMED, APPLIED TOPCOAT & SEALED REP AREA IAW SRM 51-20-01-0G-0, AMM 51-21-15-370-802 & AMM 51-31-00-001.

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