Service difficulty report · Longeron · Boeing 75724APF

Difficulty date
September 6, 2026
Submitted
September 9, 2026
Operation
Air carrier
Aircraft
N461UP
Make and model
Boeing 75724APF
Aircraft serial
28265
Aircraft time
43,549 hours, 22,014 cycles
Part
Longeron
Part number
148N37323
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

LONGERON 17L LOWER SURFACE BETWEEN BS 1885 & 1963, ATTACHED TO SKIN PANELS TO INCLUDE ALL ADJACENT STRUCURE HAS AREAS OF CORROSION AND MISSING PROTECTIVE FINISH AND TOPCOAT. REMOVED 56 EACH FASTENERS AT LONGERON 17L LOWER SURFACE BETWEEN STA 1885 AND STA 1896.2 IAW SRM 51-40-02-0G-0. INSTALLED 56 EACH FASTENERS AT LONGERON 17L LOWER SURFACE BETWEEN BS 1885 AND BS 1896.2 IAW SRM 51-40-02-0G-0.

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