Engines

Question 1

What are the idle states of the engines?

Answer 1

Flight Idle, Ground Idle, or Approach Idle (flaps are landing config or engine anti-ice is ON)

Question 2

What will happen when the EEC goes into Soft Alternate mode? (Floppy mode)

Answer 2

Using last valid data until EEC is switched OFF or throttles retarded to Idle. It will then operate in Hard Alternate

Question 3

What Hydraulic systems operate the reverse thrusters?

Answer 3

On-side Hydraulic system and backed up by Stanby Hydraulics

Question 4

What conditions are required for reversers to operate?

Answer 4

Thrust lever in idle, RA < 10ft OR Weight on Wheels

Question 5

What is the ENGINE CONTROL caption on overhead and when would it display, what would be the result for the flight?

Answer 5

Engine Control systems has parameters out of limit, Only with engines operating, on the ground up to 80kts or 30secs after landing. Non-dispatchable

Question 6

What would OIL FILTER BYPASS indicate?

Answer 6

Impending blockage of the oil filter, liable to bypass

Question 7

If the secondary Engine indication’s are automatically displayed due to a Secondary Engine parameter being exceeded, how are they cleared?

Answer 7

The display cannot be cleared until the condition is no longer present.

Question 8

Should a white box with the caption A/T LIM appear on the UPPER DISPLAY unit, what would this indicate?

Answer 8

The FMC is not providing N1 limit values to the auto throttle, which is using a degraded thrust limit from the EEC.

Question 9

What would cause the ENG FAIL caption to appear over the EGT gauge?

Answer 9

The engine being below idle ( N2 <50%)

Question 10

What Wet Start protection does the EEC provide during engine start?

Answer 10

If there is no rise in EGT 15 seconds after the Start Lever is placed to IDLE DETENT, fuel and ignition are automatically shut off

Question 11

If it becomes necessary to restart an engine in flight, how are the crew made aware of the requirement to cross bleed instead of a windmill start?

Answer 11

The caption ‘X-BLD’ or ‘XB’ if the compact mode is in use, will appear above the N2 gauge. The QRH inflight start envelope should also be checked.

Question 12

What is the purpose of a reduced thrust takeoff?

Answer 12

It lowers EGT and extends engine life

Question 13

Where is the air starter mounted and connected to?

Answer 13

Air started on Engine Aux Gearbox connected to N2 Rotor shaft

Question 14

Which parameters are primary engine indications

Answer 14

N1, EGT

Question 15

For ground start what does moving the engine start switch to GRD do?

Answer 15

Opens the engine start valve and closes the engine bleed valve (amongst other things)