The point during a flight at which an aircraft is no longer capable of returning to the airfield from which it took off due to fuel considerations.

Beyond this point the aircraft must proceed to some other destination.

No because it is warmer, according to ISA temperature should be -55°C

Because the air is less dense thus the TAS is higher for a given power setting and for this reason modern jet aircraft are designed to be most efficient at high altitude.

Enhanced Ground Proximity Warning System, provides a greater level of detection than GPWS.

EGPWS is capable of ‘looking ahead’ to identify potential risks on the aircraft flight path as it includes a terrain and obstacle database.

A METAR is an observation of the actual weather given by a meteorological observer at that aerodrome.

Profile drag, also known as pressure drag or form drag, is the drag caused by the separation of the boundary layer from a surface and the wake created by that separation.

It is primarily dependent upon the shape of the object and increases directly with speed as the faster an aircraft moves the more air molecules collide with it.

A line of shortest distance between two points on a sphere.

This provides pitch manoeuvrability.

Longitudinal balancing by the trim system.

Frequency range from 200-1750kHz, medium and low range frequency bands.

Always make sure to update yourself with the latest information on these type of questions.

CFM56-7 series with a max takeoff thrust of 27,300lb.

These engines have higher thrust, improved efficiency, and lower maintenance costs than its predecessor, the CFM56-3 series.

180 minutes extended range (ETOPS).

Bypass ratio 5.5:1