Engine Cautions

Question 1

Caution 1 - why should engine start be aborted by moving the condition leaver to cut off/feather and blow the engine for 10 seconds?

Answer 1

• No TOT rise within 3 seconds
• TOT at 927°C for one second
• TOT between 810°C and 927°C for more than 10 seconds.
• Propeller does not turn by 25% N1

Question 2

Caution 2 - shutdown engine by condition lever cut off/feather should be conducted in what instance?

Answer 2

• OIL LO PRESS caption is not out by 60% N1
• Propeller and feathering does not start by the time N1 stabilises 

Question 3

Caution 3 - in what instance can the TOTB exceeded?

Answer 3

• if the condition lever is moved to cut off/feather position below 12% N1

Question 4

Caution 4 - if fuel vapour or fumes are seen during a blow or a start before the condition lever is moved forward of cut off/feather what should be done.

Answer 4

• do not continue to blow or start and ensure condition lever is at cut off/feather.
• conduct a 30 second motoring room if required.

Question 5

Caution after N1 & TOT… Monitor— If N1 decay below 60% or TOT approaches 810°C what should be done?

Answer 5

Deselect generator and increase M1 to 70% before resetting generator to on