Service difficulty report · Seat Track · Boeing 75724APF

Difficulty date
April 14, 2026
Submitted
April 22, 2026
Operation
Air carrier
Aircraft
N421UP
Make and model
Boeing 75724APF
Aircraft serial
25281
Aircraft time
35,922 hours, 23,455 cycles
Part
Seat Track
Part number
146N5217
Condition
Corroded
Location
Zone 200
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

MDC FLOOR STRUCTURE BETWEEN STA 1200 TO 1180 AND LBL 45 SEAT TRACK WITH CORROSION IN I/B AND O/B SIDE AND HAVE FASTENER LOOSE DOT 07-110. PERFORMED EVALUATION ON THE SEAT TRACK AT LBL 45.5 BTWN STA 1200 AND 1180. FLANGE WAS FOUND TO BE WHITIN ALLOWABLE LIMITS. PER SRM 53-00-52-1A-1. REMOVED AND REPLACE FASTENER 1(EA) PER SRM 51-40-02-0G. REVIEWED.

More about the Boeing 757-24APF