41.000ft

When an aircraft climbs, the static pressure in the instrument case decreases, which allows the enclosed capsule to expand.

This in turn moves the needle on the instrument to indicate a corresponding altitude.

During descent, the opposite function applies.

Altimeter errors can originate and vary from:

Instrument Pressure Time-lag Barometric Density Temperature Blocked static port

The position of the CG directly influences the fuel consumption of an aircraft. An aft position of the CG makes the aircraft less stable, requiring less lift to be generated in both the horizontal stabilizer and wings, reducing the overall drag of the aircraft, and increasing the max range.

You want to load the the aircraft so that the CG is at, or as close as possible, to the aft limit (Without exceeding it).

36,090ft in ISA

An adymensional number relating the lift with the dynamic pressure of the incoming flow. It is dependent on the form of the object and the angle of attack.

First continue on the SID and try all available resources to check if you have a complete radio failure.

If so, squawk 7600 and return towards the airport.

TCAS works by sending interrogations to other aircraft's transponders.

The transponder will reply to the interrogation in a similar way it responds to radar. From the time difference between the interrogation and the reply, the distance to the other aircraft is calculated. The reply itself contains the altitude of the other aircraft.

The distance and the altitude difference with the other aircraft is tracked to identify a trend which may result in a TA or eventually a RA.

Stall speed is defined as the minimum steady flight speed at which the airplane is controllable.

At FL260

To protect the engine from blowing up as it is easy to open the throttles to far during take off at sea level.