Engine Start

Question 1

What check(s) are required after replacing the engine starter?

Answer 1

Perform an operational check of engine start and ignition system (WP 0119)

Question 2

Electrical power for starting the No. 1 Engine Start System is obtained from where?

Answer 2

Electrical power for the No. 1 engine start system is obtained from the No. 1 dc essential bus through the NO. 1 ENG START circuit breaker on the copilot’s auxiliary circuit breaker panel.

Question 3

How is the crossbleed valve opened for engine crossbleed starts?

Answer 3

Engine Crossbleed (One Engine Operating).When theAIR SCE HT/STRT switch on upper console is placed to ENG, the engine crossbleed valve of the engine operating opens. The crossbleed valve of the engine not operating stays closed to prevent bleed-air from entering and turning the engine compressor in the opposite direction of start. With the ENG POWER CONT lever of the stopped engine at OFF and the start button on that engine pressed, the start control valve of the engine being started opens.

Question 4

What is the purpose of the K22 relay?

Answer 4

K22 controls the Start/Bypass Valve

Question 5

Is a maintenance test flight required for an engine control quadrant replacement?

Answer 5

YES, IT’S THE LAST STEP ON Rig engine power available system (WP 0715).

Question 6

Where are the K45 and K26 start relays located?

Answer 6

Left and right relay panel

Pressing the ENGINE START button routes 28 V dc to the left relay panel, energizing relay K45/K26.

Question 7

What type of system is use to start the main engines on the UH-60M?

Answer 7

The Pneumatic

Question 8

During an external start, what indications must be monitored closely?

Answer 8

NG and TGT.

Question 9

Which switches causes the start control valve to open?

Answer 9

The Start switch through actuation of the start and override micro switches.

Question 10

What position is the engine ignition switch (if being used) in when you are going to only motor the engine for an engine flush?

Answer 10

The OFF position

Question 11

When using an external air source, the No. 3 MFD prevents blind start. However, this procedure results in a loss of the _________________ unless an electric cable is used.

Answer 11

Hot Start Prevention

Question 12

What component provides the auto hold function during the engine start process?

Answer 12

Start Speed Switch

Question 13

During the engine start, which switch allows power to flow through to pin 3 on the start control valve?

Answer 13

Abort Switch

Question 14

During the engine start check, what advisory light(s) should appear?

Answer 14

PRIME BST PUMP ON

Question 15

What is the minimum Ng allowed during the Engine Start Systems Check?

Answer 15

24 %