Dual Engine Failures

Question 1

What is likely to be the cause of a double ENG failure? (2)

Answer 1

Contaminated fuel
Battle damage

Question 2

You are flying OEI when suddenly your second engine has failed, what are your actions to land the aircraft?

Answer 2

C - Full down to recover Nr
A - Raise attitude up to 10ºNU
J - Jettsion

stable in the auto
F - @ 150-200ft AGL set 20ºNU
C - Cushion

Question 3

Once stabilised in the auto, what PMI is typical to maintain RRPM?

Answer 3

13-15% PMI

Question 4

How can autorotation range be estimated?

Answer 4

Look forwards to the gun barrel tip, that will be the approx termination point for the auto

Question 5

What are the NFP duties during a double ENG failure?

Answer 5

• Advise FP of NR position and trend when out of limits; E.g. “Nr low, trending up”
• Advise RADALT below 1000ft at 100ft increments, 50ft increments when below 250ft AGL

Question 6

Above what altitude can an engine relight be attempted?

Answer 6

3000ft AGL

Question 7

What are the required conditions for an air restart? (2)

Answer 7

NG less than 8º
Above 3000ft AGL

Question 8

What is the air restart checklist?

Answer 8

1. EEP …………… STOP then NORMAL
2. FCP, PUMP ……………………… AUTO.
3. ECP, START …………………….. START.

Question 9

What is the 75KIAS attitude once established in auto?

Answer 9

1ºNU

Question 10

At what attitude will the tail rotor strike the ground before the tail wheel?

Answer 10

30ºNU

Question 11

What is the max range IAS for autos?

Answer 11

90KIAS