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).
What are the forces acting on an aircraft in flight?
What are the forces acting on an aircraft in flight?
Lift, Drag, Weight and Thrust.
Does the Boeing 737 have a critical engine?
Does the Boeing 737 have a critical engine?
No, there is no P-factor (asymmetric blade effect) as on a propeller-driven aircraft.
What are the advantages of an all moving/variable incidence tailplane?
What are the advantages of an all moving/variable incidence tailplane?
This provides pitch manoeuvrability.
Longitudinal balancing by the trim system.
What errors does an NDB suffer from?
What errors does an NDB suffer from?
NDB errors:
Interference from other NDB’s
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Static, especially near thunderstorms
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Night effect Coastal refraction
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Mountain effect
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Aircraft quadrantal error
What is the average temperature at 25,000ft according to ISA?
What is the average temperature at 25,000ft according to ISA?
-35°C
What is the maximum operating ceiling of a typical jet?
What is the maximum operating ceiling of a typical jet?
41.000ft
How accurate are NDB's?
How accurate are NDB's?
NDB’s are stations emitting a signal. There is nothing for them to be accurate about. ADF's on the other hand, when tuned to an NDB need to be accurate within +/- 5 degrees.
What is the critical angle of attack?
What is the critical angle of attack?
The critical angle of attack is the angle of attack which produces maximum lift coefficient.
This is also called the "stall angle of attack".
What performance category was your last aircraft? How are airplanes classified?
What performance category was your last aircraft? How are airplanes classified?
Note: this question was asked to a candidate with previous Seneca experience, make sure to be able to answer this question for your previous aircraft type.
Seneca is class A.
Aircraft are classified according to their Vat.