Briefings Flashcards
Power = ____ + ____
Power = Throttle + Props (high RPM)
When DECREASING airspeed, what controls should you adjust first?
1st - THROTTLE
2nd - Props
Anytime you are on the GROUND in the Seminole, which controls will adjusts RPM setting?
THROTTLE!
Anytime you are in the AIR in the Seminole, which controls will adjust RPM setting?
PROPS!
In the AIR, what controls will adjust the MANIFOLD pressure?
THROTTLE!
What manifold pressure should be held during a normal T/O and climb?
20”
Why do we land with the Props at a high RPM?
So that if needed, the a/c is ready to go-around
How do you determine which Engine Start Cold/Hot checklist to use?
Physically look at the oil consistency, and feel the engine!
What is the MAX drop of RPM during run-up?
500 RPM
If the engine is running rough during run-up, which checklist would you use to troubleshoot?
The fouled spark plug procedure!
If the engine’s RPM continues to drop during run-up, which checklist would you use to troubleshoot?
The overly enriched procedure!
What is the MAX RPM drop during Prop Exercising?
300 RPM
What is an “Accelerate and Stop” distance?
The Ground Roll distance calculated if you were to have an engine failure on the T/O roll
What RPM will be needed during Steep Turns?
2400 RPM
What manifold pressure will be needed during Power On stalls?
18”
When should you turn the fuel pumps ON?
When changing altitudes!
Does the Seminole have a Critical Engine? Why?
No because the engines are counter rotating and would have the same adverse effects on the a/c’s handling and performance
What does FAR 23.149 define?
Vmc: The CAS at which a/c control could be maintained if the critical engine were to fail
In MOST twin engine a/c, which is the critical engine? What 4 reasons make this so?
The LEFT engine!
- P-factor
- Accelerated Slipstream (acting on vertical tail)
- Spiraling Slipstream (acting on vertical tail)
- Torque (props rotating about the mount make a/c want to turn too)
What is Zero-Thrust?
Simulated Prop. Feathering
How much climb performance do you lose with 1 engine inop?
80-90 percent!
Charts on POH pgs 5-23 and 5-24 prove this!
-200 fpm
Where is the Service Ceiling for our Seminoles?
The altitude at which you can only achieve a 50 fpm climb (usually its 100 fpm)
~must calculate this every flight~
What is Absolute Ceiling?
Altitude at which you can no long achieve a climb! 0 fpm
Why do we preform Zero-Sideslip when we lose an engine?
It gives us the best performance
How can you VERIFY the inoperative engine?
- Low/dropping EGT
2. Throttle/heading change response
What is the most common cause of engine failure?
FUEL STARVATION
In what situation would you choose to land OFF AIRPORT in twin engine a/c?
- Dual engine failure
- FIRE
~otherwise secure the dead engine and find an airport with services~
What turning tendencies make the Left Engine CRITICAL on a conventional twin?
- P-factor
- Accelerated Slipstream
- Spiraling Slipstream - pushing vertical tail to the right causing nose to swing left
- Torque - prop rotation about shaft makes whole a/c want to swing left
When does Vmc exist?
ONLY when there is 1 engine inop!!
