Service difficulty report · Tee Angle · Boeing 75724APF

Difficulty date
February 8, 2025
Submitted
February 27, 2025
Operation
Air carrier
Aircraft
N465UP
Make and model
Boeing 75724APF
Aircraft serial
28269
Aircraft time
34,456 hours, 21,052 cycles
Part
Tee Angle
Part number
149N763314
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

FS 1238- FS 1240 RBL 31 INBD LOWER TEE CHORD FLANGE HAS SEVERE INTERGRANULAR CORROSION. REMOVE AND REPLACE 1 EACH RBL 30.75 (P/N: 149N7633-14) LOWER TEE CHORD AT STA 1240 PER PRODUCTION DRAWING REQUIREMENTS AND 757-200PF SRM CHAPTER 51 REQUIREMENTS. VERIFIED INSTALLATION OF T-CHORD ON STR FS 1238- FS 1240 RBL 31 IAW SRM 51-40-02.

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