SDR DXTA200400334

Service difficulty report · Selector Knob · Cessna 560XL

Difficulty date: July 9, 2004
Submitted: July 13, 2004
Operation: Air carrier
Aircraft: N690QS
Make and model: Cessna 560XL
Aircraft serial: 5605090
Aircraft time: 3,603 hours, 2,857 cycles
System (JASC): 2130 · Cabin Pressure Control System
Part: Selector Knob
Condition: Out Of Position
Location: Cabin Pressure
Stage of operation: CR
How discovered: O
Nature of condition: J
Precautionary procedure: B

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

What was found

DURING CRUISE AT 22,000 FT, MASTER WARNING CAME ON FOR LOSS OF CABIN PRESSURIZATION. DECLARED EMERGENCY AND DESCENDED DOWN TO 10,000 FT, PROBLEM WENT AWAY. DIVERTED AND AIRCRAFT LANDED SAFELY. FOUND SELECTOR KNOB POINTING INCORRECTLY, REPOSITIONED CABIN SOURCE SELECTOR KNOB, KNOB INDEX LINE POINT TO ALL SOURCES CORRECTLY.

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