Dash 1 - GK (Section I)

Question 1

The aircraft basic empty weight is approximately

Answer 1

4900 pounds

Question 2

Maximum takeoff gross weight is

Answer 2

6500 pounds

Question 3

The PT6A-68 is a ___-turbine turboprop engine (Figure 1-8) flat rated to produce ___ shaft horsepower. The engine is a ____-flow design with two independent sections:

Answer 3

free-turbine
1100 SHP
reverse-flow
the gas generator section and the power turbine section

Question 4

The oil system has a capacity of ___ U.S. quarts

Answer 4

18.5 quarts

Question 5

The oil system provides a constant supply of filtered oil to: (4 things)

Answer 5

engine bearings, reduction gears, accessory drives, and propellor

Question 6

Oil level must be serviced within __ minutes of engine shutdown. For most accurate results, check oil level __ to __ minutes after shutdown.

Answer 6

30 minutes
15 to 20 minutes

Question 7

The engine oil pressure indicator may display oil pressures up to __ psi with the engine shut down due to the design of the oil pressure transmitter.

Answer 7

4 psi

Question 8

The oil is filtered by the main oil filter and then by several oil strainers. If the main oil filter becomes clogged…

Answer 8

a filter bypass valve allows unfiltered oil to continue to lubricate the engine.

Question 9

The SCU (signal conditioning unit) will activate the red OIL PX annunciator if oil pressure drops to ____ when above idle power, or when oil pressure drops to ____ at idle power.

Answer 9

Above idle: 40 psi or below
Idle: 15 psi or below

Question 10

The SCU will illuminate the amber OIL PX annunciator whenever sensed oil pressure is between ____ at idle power, and if the oil pressure drops to between _____, for ___ seconds, above idle power.

Answer 10

Idle: 15 and 40 psi
Above Idle: 40 and 90 for 10 seconds

Question 11

If oil pressure remains between ___ and ___ psi at idle power for __ seconds or more, both amber and red OIL PX annunciators will illuminate

Answer 11

15 and 40 psi
5 seconds or more

Question 12

Does a momentary illumination of the amber OIL PX annunciator while maneuvering indicate a malfunction?

Answer 12

Due to the sensitivity of the signal conditioning unit, a single, momentary illumination of the amber OIL PX annunciator while maneuvering is possible but may not indicate a malfunction.

Question 13

Will normal oil pressure buildup during engine start illuminate the amber OIL PX annunciator?

Answer 13

No. The SCU contains logic to prevent nuisance amber annunciator illumination from normal oil pressure buildup during engine ground start.

Question 14

The Reduction Gear Box is a two-stage planetary reduction drive to reduce the power turbine output shaft speed of over ____ RPM to the propeller operating speed of ____ RPM.

Answer 14

30,000 RPM to 2,000 RPM
Power Turbine -> Propeller

Question 15

A chip detector is mounted in the ____ to detect ferrous material in the oil

Answer 15

Reduction Gearbox

Question 16

The ____ drives the aluminum __-inch, ____- bladed, constant-speed, variable-pitch, non-reversing, feathering propeller through the _____

Answer 16

power turbine
97-inch
four-bladed
reduction gearbox

Question 17

What automatically controls the propeller blade angle (pitch) and propeller speed (Np)?

Answer 17

the PMU (power management unit) and the PIU (propeller interface unit)

Question 18

Because the engine is flat rated, 100% torque is available from sea level to approximately ___ to ___ MSL on a standard day

Answer 18

12,000 to 16,000 feet MSL

Question 19

At 100% indicated torque, the engine is producing approximately ___ foot-pounds of torque at the prop shaft. This equates to approximately ___ pounds of thrust at sea level, zero airspeed.

Answer 19

2900 foot-pounds
2750 pounds of thrust

Question 20

Propeller pitch may be defined by three basic conditions:

Answer 20

Feathered, Low Pitch, and High Pitch

Question 21

When feathered, the propeller blades are aligned _____. About __° from the reference plane

Answer 21

Nearly straight into the wind (~ 86°)

Question 22

When in low pitch, the propeller blade angle is approximately __° from the reference plane

Answer 22

15°

Question 23

When will the propeller blades be at low pitch?

Answer 23

Low speeds and low throttle settings

Question 24

With the PMU function- ing, the mechanical overspeed governor modulates oil pressure to the propeller pitch change piston to limit NP below ___%, while the electronic governor will maintain NP at ___%.

Answer 24

106%
100%

Question 25

f PMU function is lost or deactivated, the mechanical fly- weight overspeed governor modulates oil pressure to the propeller pitch change piston to maintain NP at or below ____%

Answer 25

100±2%

Question 26

The primary engine data display presents:

Answer 26

torque, propeller RPM (NP), indicated outside air temperature (IOAT), gas generator speed (N1), and ITT

Question 27

The PCLs are interconnected with a ____ so movement of one PCL moves the other. A flexible cable connects the front PCL (electrically and mechanically) to the?

Answer 27

push-pull rod
Fuel Management Unit (FMU)

Question 28

The alternate engine data display presents: Except for torque, none of the above signals are processed by the PMU

Answer 28

alternate torque, alternate N1, cockpit pressure altitude, cockpit differential pressure (delta P), fuel flow, fuel quantity in the respective wing, and raw ITT (RITT)

Question 29

What powers the PMU?

Answer 29

the PMA (permanent magnet alternator) which is mounted on the reduction gearbox

Question 30

The Permanent Magnet Alternator supplies ___ VAC, which the PMU converts to DC.

Answer 30

32 VAC