Service difficulty report · Tee Angle · Boeing 75724APF

Difficulty date
July 20, 2026
Submitted
August 25, 2026
Operation
Air carrier
Aircraft
N455UP
Make and model
Boeing 75724APF
Aircraft serial
25476
Aircraft time
46,102 hours, 22,631 cycles
Part
Tee Angle
Part number
144N81403
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

LH ECS BAY DOOR 2ND FROM FWD PANEL LANDING HAS CORROSION IN MULTIPLE AREAS THROUGHOUT STR ATA 51-00 GM049. INSTALLED BEAM BTW BS 918 TO BS 967 WL=133.15 LBL=6.84 IAW B757-200PF SRM 51-40-02-0G-0, SRM 51-40-04-0G-0 AND DRAWING PN 14N8140 REV. DATE 2-12-02 TOOL USED ID 19-1240 DUE 22-OCT-2026. REVIEWED

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