Service difficulty report · Cabin Pressure · Raythn 400ARAYTHEON

Difficulty date
January 3, 2012
Submitted
January 5, 2012
Operation
Air carrier
Aircraft
N309AK
Make and model
Raythn 400ARAYTHEON
Aircraft serial
RK348
Aircraft time
4,254 hours, 4,074 cycles
Part
Cabin Pressure
Condition
Malfunctioned
Location
Cabin
Stage of operation
DE
How discovered
O
Nature of condition
O
Precautionary procedure
K

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

What was found

PRESSURIZATION RATE SWINGS 2000 FT PER MIN ON DESCENTS. CREW CAN HEAR OUTFLOW VALVES POPPING WITH POWER CHANGES.