I'm really not happy with these questions .... the way they are written is a little bit tricky ... pressurized
aircraft at FL 260 ...
1. Operating above 25000ft - crew need quick donning oxygen masks – yes.
2. The rule ... Cabin altitude greater than 10000ft (3000m) - need
warning - so you could argue that this is correct - you will certainly get a
warning above 13000ft.
3. Pressurized aircraft, SUPPLEMENTAL oxygen for everyone entire fligh time above 15000ft - so definitely correct.
4. The rule for First Aid oxygen ... 2% of the passengers (in no case
less than 1) for the remainder of the flight cabin altitude above 8000ft - so
with 150 passengers - that is 3 - but again, you could argue that this
statement is correct - you will have first aid oxygen for 2 passengers.
So, if the question is looking for a statement of the rules/regulations
- only 1 & 3 are correct - but there is an argument that all 4 statements
are OK!
I think they are after the rules - so 1 & 3 ... BUT
.... we do need to know if this one turns up in
an Exam!!