Service difficulty report · Switch · Urocop EC135P1

Difficulty date
July 7, 2010
Submitted
July 9, 2010
Operation
Air carrier
Aircraft
N135ME
Make and model
Urocop EC135P1
Aircraft serial
0009
Aircraft time
7,102 hours
Engine
Pwa PW206A
Part
Switch
Part number
945UN01Q4AA8B
Condition
Dislodged
Location
Engine Control
Part time
7,102 hours
Stage of operation
CR
How discovered
O
Nature of condition
R, J
Precautionary procedure
O

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

What was found

DURING CRUISE FLIGHT, ABOUT 5 MINUTES FROM DESTINATION THE ENGINE CONTROL SWITCH TO THE NR 1 ENGINE WAS EITHER BUMPED OR IT SLIPPED ON ITS OWN TO THE IDLE POSITION. THE PILOT HAD THE MASTER CAUTION FOR THE ENG GOING TO IDLE AND GOT A LT YAW AS WELL. THE PILOT ADJUSTED TO COLLECTIVE THE TORQUE FOR THE NR 2 ENGINE WAS IN LIMITS--BELOW 86 PERCENT. THE PILOT PUT THE SWITCH BACK TO THE "FLIGHT' POSITION AND THE TORQUES MATCHED UP IN ABOUT 10 SECONDS. THE PILOT DIDN'T DECLARE AN EMERGENCY AND ACTUALLY LANDED AT THE INTENDED SCENE.

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