SDR L7OA20130109001

Service difficulty report · Pressure Valve · Beech 400A

Difficulty date: January 9, 2013
Submitted: January 14, 2013
Operation: Air carrier
Aircraft: N999YB
Make and model: Beech 400A
Aircraft serial: RK98
Aircraft time: 5,857 hours, 4,665 cycles
System (JASC): 2130 · Cabin Pressure Control System
Part: Pressure Valve
Part number: 45AS63019009
Part serial: 0174
Condition: Defective
Location: Cabin Pressure
Part time: 481 hours, 377 cycles
Stage of operation: CR
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

PILOT STATED NOTICED CABIN AT 10,000 FT AND CLIMBING. DONNED MASKS AND STARTED AN EMERGENCY DESCENT. CABIN CONTINUED TO CLIMB AT ABOUT 2,200 FPM AND RECEIVED A CABIN ALTITUDE ANNUNCIATOR AND THEN THE PAX MASKS DROPPED AUTOMATICALLY AROUND 14,000 CABIN ALTITUDE. CABIN ULTIMATELY REACHED 15,000 FT AND HELD THERE.

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