SDR IPXA2M74647

Service difficulty report · Bleed Valve · Doug MD11F

Difficulty date: July 30, 2012
Submitted: August 1, 2012
Operation: Air carrier
Aircraft: N277UP
Make and model: Doug MD11F
Aircraft serial: 48578
Engine: Ge CF680C2B6F
System (JASC): 4950 · APU Bleed Air System
Part: Bleed Valve
Part number: 1096123
Part serial: 1705
Condition: Inoperative
Location: Apu
Stage of operation: DE
How discovered: O
Nature of condition: J
Precautionary procedure: B, A

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

What was found

WITH LEVEL II, AIR SYS 2 PRESSURE LOW ON DESCENT LEVEL II, AIR SYSTEM 1, PRESSURE LOW ILLUMINATED. EMERGENCY DECLARED. SHORTLY AFTER LEVEL II, AIR SYS 3, PRESSURE LOW (NO CABIN PRESSURE). ACCOMPLISHED EMERGENCY DESCENT. R & R APU LOAD BLEED VALVE IAW AMM 36-16-02.

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