SDR CA030918012

Service difficulty report · Generator · Skrsky S76A

Difficulty date: September 16, 2003
Submitted: October 15, 2003
Operation: General aviation
Make and model: Skrsky S76A
Engine: Tmeca ARRIEL1S1
System (JASC): 2430 · DC Generating System
Part: Generator
Condition: Out Of Adjust
Location: Engine
Stage of operation: NR
How discovered: O
Nature of condition: Y, J
Precautionary procedure: A

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

What was found

(CAN) DURING TRAINING, INFLIGHT ENGINE SHUTDOWN AND RESTART PROCEDURES WERE BEING DEMONSTRATED. WHEN START WAS ATTEMPTED THE THE OVERSPEED SYSTEM TRIPPED AND PREVENTED THE RESTART. TROUBLESHOOTING INDICATES THAT A OUTPUT VOLTAGE OF 28.55 VDC FROM THE OPERATING ENGINE GENERATOR WILL TRIP THE OVERSPEED SYSTEM AND PREVENT STARTING. ADJUSTMENT OF THE OUTPUT VOLTAGE TO 28.5 VDC HAS CORRECTED THIS PROBLEM.