SDR NSVA2009025

Service difficulty report · Switch · Saab 340B

Difficulty date: May 16, 2009
Submitted: May 19, 2009
Operation: Air carrier
Aircraft: N184CJ
Make and model: Saab 340B
Aircraft serial: N184CJ
Aircraft time: 37,436 hours, 44,276 cycles
System (JASC): 6123 · Propeller Feathering/Reversing
Part: Switch
Condition: Failed
Location: Prop Feathering
Stage of operation: TO
How discovered: O
Nature of condition: O
Precautionary procedure: C

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

What was found

LT PROPELLER DIDN`T UNFEATHER ALL THE WAY WHEN TAKING THE RUNWAY. LT PROPELLER APPEARS UNFEATHERED (NORMAL STATUS LIGHTS). WHEN ADDING POWER FOR TAKEOFF, LT PROPELLER FEATHERED ITSELF. ON TAXI BACK TO THE GATE, PROP REMAINED IN FEATHER. REMOVED AND REPLACED THE LT P3 SWITCH, OPS CHECK GOOD.

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