Thanks for all the feedback guys. Very helpful. Just a last couple of questions I need help on:
When can you override a GPWS warning?
The captain can decide to override a GPWS warning when the aircraft is:
1. 1000 ft vertically clear of clouds,
2. 1 km horizontally clear of clouds,
3. In 8.5 km of clear visibility,
4. Flying in the daytime,
5. Obviously not in danger.
I can't find any sources which mention these conditions from my ATPL manuals. Any suggestions?
What are the ICAO transponder codes?
0000 Transponder mode C malfunction, i.e. a 200 ft or greater difference between the aircraft and ATCs radar height readings if you cannot separately turn off mode C.
Now I know 0000 is when transponder malfunctions but this "200 ft or greater difference betwen the aircraft and ATCs radar height readings" I find no source to confirm it from.
Thanks again.