SDR IPXA2025052810387

Service difficulty report · Hydraulic System · Boeing 75724APF

Difficulty date: May 28, 2025
Submitted: May 28, 2025
Operation: Air carrier
Aircraft: N465UP
Make and model: Boeing 75724APF
Aircraft serial: 28269
Aircraft time: 34,730 hours, 21,206 cycles
System (JASC): 2910 · Hydraulic System, Main
Part: Hydraulic System
Part number: 211C223521
Part serial: C03766AC
Condition: Warning Message
Stage of operation: CL
How discovered: O
Nature of condition: J
Precautionary procedure: O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

**ATB** ON TAKE OFF AFTER- 80 KTS , LEFT HYD QTY IN FLIGHT PROGRESSED TO (L) HYD SYS PRESS, ALT GEAR EXTEND, AND ALT FLAP EXTEND. FOUND FLAP/SLAT DEPRESSURIZATION MODULE PRESSURE SWITCH LEAKING. REPLACED REF AMM 27-51-29-422-026. OPS AND LEAK CHECKS GOOD.

More about the Boeing 757-24APF