King Air 300 Engine System

Question 1

Engine Type & SHP

Answer 1

Pratt & Whitney PT6A-60A
1060 SHP

Question 2

Max ITT Start

Answer 2

1000 C for 5 seconds

Question 3

Max ITT Takeoff/continuous

Answer 3

820 C

Question 4

Number of compressor stages and types

Answer 4

3 stage axial flow, single stage centrifugal

Question 5

Accessory gear box drives what items?

Answer 5

Hydraulic pump
Oil pump
Fuel pump
Starter/Gen
Tach generator (N1 speed)

R engine: A/C compressor

Question 6

Usable oil tank capacity

Answer 6

2.66 gallons

Question 7

L/R OIL PRESS LO light at what PSI

Answer 7

Below 40 PSI

Question 8

What is P3 bleed air used for?

Answer 8

Cockpit side window defog
Inflate door seal
Hydraulic press topper
Ejector for pressurization controller
Deflating boots

Question 9

How many prop governors, and what are they?

Answer 9

3 governors
Primary, overspeed, fuel topping

Question 10

How many fuel nozzles?

Answer 10

14

Question 11

At what N1 does the flow divider send fuel to all nozzles?

Answer 11

35-40%

Question 12

When does auto ignition energize?

Answer 12

Below 17% torque (when armed)

Question 13

When will autofeather arm?

Answer 13

1. Both power levers above 88% N1
2. Both torque above 17%

Torque oil pressure below 17% value

Torque drops below 10% = prop feathers