Service difficulty report · Switch · Snias AS350B2

Difficulty date
November 30, 2009
Submitted
January 19, 2010
Operation
General aviation
Make and model
Snias AS350B2
Aircraft time
10,862 hours
Engine
Tmeca ARRIEL1D1
Part
Switch
Part number
MS2771923
Condition
Unserviceable
Location
Collective
Stage of operation
TX
How discovered
9
Nature of condition
O
Precautionary procedure
D

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

What was found

(CAN) THE HYDRAULIC SYSTEM INCORPORATES A CUT OFF SWITCH ON THE COLLECTIVE, THE HYDRAULIC TEST PUSH BUTTON DID NOT ACTIVATE THE T/R SOLENOID TO CENTER THE T/R PEDALS, THE CIRCUIT BREAKER HAD BLOWN, AND WAS REPLACED, AFTER REPLACEMENT THE CUTOFF COLLECTIVE SWITCH STILL DID NOT WORK, INVESTIGATION SHOWED TO BE A BAD SWITCH, SWITCH WAS REPLACED AND ALL SYSTEMS CHECK AND FOUND NORMAL. (TC NR 20091201002)