SDR 2023F00102

Service difficulty report · Control Valve · Raythn 390

Difficulty date
March 14, 2023
Submitted
April 4, 2023
Operation
General aviation
Aircraft
N390DP
Make and model
Raythn 390
Aircraft serial
RB34
Aircraft time
3,316 hours, 2,804 cycles
Part
Control Valve
Part number
3903850350003
Part serial
0153
Condition
Failed
Location
Fuselage, Aft Up
Part time
4,430 hours, 3,585 cycles
Component
Pnuematic Syste · Beech
Stage of operation
TO
How discovered
9
Nature of condition
M
Precautionary procedure
C

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

What was found

ON TAKEOFF FROM SCOTTSDALE, AZ (KSDL) A LOUD RUSH OF HOT BLEED AIR ENTERED THE COCKPIT. THE TEMPERATURE INCREASED IN A MATTER OF SECONDS. AS A PRECAUTION THE TAKEOFF WAS ABORTED. MAINTENANCE TROUBLESHOT THE SYSTEM AND DETERMINED THAT THE LEFT BI-LEVEL CONTROL VALVE HAD FAILED IN THE OPEN POSITION.