What is ACA/H? What ACA/H did you use? Why do we have an ACA/H?

What is ACA/H? What ACA/H did you use? Why do we have an ACA/H?

Asymmetric Committal Altitude/Height is the minimum height needed to establish a positive climb whilst maintaining adequate speed for control and removal of drag during an approach to a landing.

In the Seneca at Oxford we used 200ft AGL. At this altitude when continuing for landing you selected the landing flaps (check clear runway, on speed, on altitude, landing clearance received).

You now are committed to land, single engine G/A with flaps 40 and gear down is not possible in a Seneca.

If you are outside the range of any VOR’s/NDB's, how does the aircraft know where it is?

If you are outside the range of any VOR’s/NDB's, how does the aircraft know where it is?

Via INS/IRS/GPS

What are the advantages of fuel injection vs a carburetor?

What are the advantages of fuel injection vs a carburetor?

Fuel injection provides:

  • Fuel free from vaporization ice

  • Better economy through metered delivery

  • More responsive and efficient engine

  • Less maintenance

What is the mean camberine?

What is the mean camberine?

a line extending from the leading edge to the trailing edge equidistent from the upper and lower surface of the aerofoil.

Explain what coffin corner is and what happens when reaching the coffin corner?

Explain what coffin corner is and what happens when reaching the coffin corner?

Occurs at absolute ceiling where low speed buffet and high speed (Mach) buffet are coincident.

When reaching the coffin corner, both increasing and decreasing the corner speed will result in a loss of control (either the aircraft stalls, or mach buffeting starts).

Is the landing gear in the Seneca electrically or hydraulically operated?

Is the landing gear in the Seneca electrically or hydraulically operated?

We are missing the answer.

What is the average temperature at 25,000ft according to ISA?

What is the average temperature at 25,000ft according to ISA?

-35°C

If in a go-around, which take-off stages will still apply?

If in a go-around, which take-off stages will still apply?

None. The go around procedure is distinct from the take off procedure. You will still have an acceleration altitude, but you will not have a screen height, V1, Vr, V2, flap retraction altitude, etc.

Is the Seneca turbocharged?

Is the Seneca turbocharged?

We are missing the answer.

What are winglets and what is the advantage of winglets?

What are winglets and what is the advantage of winglets?

They are aerodynamically efficient surfaces located at the wing tips, designed to reduce induced drag and increase fuel efficiency.

They increase efficiency by reducing the size of the wingtip vortices, which are created by the difference between the pressure on the upper surface of the wing and that on the lower surface.

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