SDR SWAA2015100144435

Service difficulty report · Valve · Boeing 7373H4

Difficulty date: September 29, 2015
Submitted: October 1, 2015
Operation: Air carrier
Aircraft: N612SW
Make and model: Boeing 7373H4
Aircraft serial: 27930
Aircraft time: 63,554 hours, 51,050 cycles
System (JASC): 3610 · Pneumatic Distribution System
Part: Valve
Part number: 32895626
Part serial: 440C
Condition: Faulty
Location: Bleed Ais Sys
Stage of operation: CL
How discovered: O
Nature of condition: J
Precautionary procedure: G, A

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

What was found

DIVERSION, DECLARED EMER, CABIN ALTITUDE WARNING HORN & LIGHT ON, DURING CLIMB OUT PASSING FL190. NO AUTO FAIL OR ASSOCIATED LIGHTS OR INDICATIONS. OFF SCHEDULE DESCENT LIGHT ON DURING DESCENT. CABIN ALTITUDE REACHED 17,000'. MASKS DEPLOYED IN CABIN AUTOMATICALLY. R & R NR 1 PRE-COOLER VLV IAW AMM.

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