Service difficulty report · Valve · Snias AS350B2

Difficulty date
April 25, 2007
Submitted
June 7, 2007
Operation
General aviation
Make and model
Snias AS350B2
Aircraft time
10,107 hours
Engine
Tmeca ARRIEL1D1
Part
Valve
Part number
3186100
Part serial
3094
Condition
Malfunctioned
Location
Engine
Stage of operation
IN
How discovered
O
Nature of condition
X
Precautionary procedure
O

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

What was found

(CAN) ASSEMBLY IS ON CONDITION. AFTER CARRYING OUT A 100 HR AND 300 HR INSPECTION A FUNCTIONAL CHECK WITH THE INJECTOR ELECTRO VALVE (IEV) WAS ACCOMPLISHED. FOLLOWING A RUN-UP TO 100 PERCENT, THE ENGINE RPM WAS REDUCED AND STABILIZED AT JUST OVER FLIGHT IDLE FOR 30 SECONDS IAW COOL DOWN REQUIREMENTS. DEPRESSION OF THE STARTER BUTTON AT THIS POINT SHOULD NOT HAVE CAUSED ANY PROBLEM BUT IN THIS FUNCTIONAL CHECK A FLAME OUT OCCURRED. FOLLOWING THE FLAME OUT A BENCH TEST WAS CARRIED OUT AND IT WAS DETERMINED THAT IT`S OPERATION AT A PRE DETERMINED P2 PRESSURE WAS INTERMITTENT. SENT UNIT TO MFG FOR REPAIR OR OVERHAUL AND THE UNIT WAS SCRAPPED. (TC NR 20070531005)