Service difficulty report · Pressure System · Cessna 560CESSNA

Difficulty date
July 2, 2005
Submitted
July 5, 2005
Operation
Air carrier
Aircraft
N339QS
Make and model
Cessna 560CESSNA
Aircraft serial
5600339
Aircraft time
8,772 hours, 7,097 cycles
Engine
Pwa JT15D5
Part
Pressure System
Condition
Failed
Location
Cabin Pressure
Stage of operation
CL
How discovered
O
Nature of condition
G
Precautionary procedure
O

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

What was found

AIRCRAFT LOST ALL PRESSURIZATION AT 23,000 FT AS THE THROTTLES WERE PULLED BACK PAST 90 PERCENT. THE EMERGENCY CABIN ALT LIGHT AND MASTER WARNING CAME ON. EMERGENCY PRESSURE FAILED TO PRESSURIZE THE PLANE. THE MASKS DID NOT DROP. ITEM IS UNDER INVESTIGATION.