Supplementary Procedures

Question 1

If the temperature is below -15°C, what special precaution should be taken while starting the APU?

Answer 1

Connect the ground power supply before starting the APU

Question 2

If the cockpit temperature is below -15°C will you have the display units

Answer 2

Possibky no

Question 3

What is the maximum thickness of frost that is acceptable on the underside of the wing tank areas?

Answer 3

3mm or 0.125 in

Question 4

When operating in volcanic ash , sand or dusty conditions, what should be done before starting the engine?

Answer 4

Dry crank the engine for 2 mins

Question 5

When can you not perform one engine taxi?

Answer 5

In operations with volcanic ash, sand or dust

Question 6

When do we consider a manual start?

Answer 6

We consider a manual start when we are
i)expecting a start abort
- reduced EGT margin in hot temperature high altitude
- Degraded Bleed performance due to hot conditions or high airfield
- Marginal performance of external pneumatic power

ii) after an abort due to
- Engine stall
- EGT over limit
- Low air start pressure