Propellor Overspeed
Been in airport fire and rescue for more years than I care to remember, and come across almost every type of emergency imaginable, however, last year came across a new one on us. We had two calls to the same aircraft (Dash 8 Q400) within a couple of weeks of each other, with a prop overspeed problem. Seem to remember it could be a problem on old piston engined aircraft in the 50's. Hope someone can answer a couple of questions:
1. What is prop overspeed?
2. What causes it?
3. How does it affect the aircraft in flight?
4. What corrective action can the flight crew take?
5. Is prop overspeed the same as a runaway prop?
Thanks in advance,
AFFF.