Powerplant

Question 1

Spell out the below engine system abbreviations:

FADEC, ECU, HMA, RDPS, PRI, REV, CONT, NG, NP, PTIT, AGB

Answer 1

Full Authority Digital Electronic Control
Electronic Control Unit
Hydromechanical Metering Assembly 
Ratio Detector Power Supply
Primary
Reversionary 
Contingency 
Gas Producer
Power Turbine
Power Turbine Inlet Temperature 
Accessory Gear Box

Question 2

Identify the 4 major sections of the T55-GA-714A Turbine Engine?

Answer 2

Intake, Compressor, Combustion, Exhuast

Question 3

Identify the three engine mounted components that have impending bypass indicators that should be checked on pre-flight inspection.

Answer 3

Main Fuel Filter, In-Line Fuel Filter, Main Oil Filter

Question 4

What NG speed constitutes an NG over speed?

Answer 4

Above 111%

Question 5

Identify the engines torque limits (dual/single)?

Answer 5

Dual 100%, Single 123%

Question 6

Identify at what PTIT time limited operations begin.

Answer 6

Above 816

Question 7

Identify the component that supplies the engine oil pressure signal that is seen on the Powertrain portion of the engine instrument page.

Answer 7

Oil Pressure Sensor

Question 8

Identify the engine oil temperature limit.

Answer 8

149

Question 9

Identify what NR percent position we normally have the NR selector switch set at?

Answer 9

100%

Question 10

What does the load share switch on the FADEC control panel allow the pilot to choose for engine load share?

Answer 10

Torque or PTIT

Question 11

In relation to FADEC system what component is installed in the flight control closet for the purpose of sending thrust position and rate information to the ECU’s to eliminate rotor droop?

Answer 11

Thrust CPT

Question 12

Identify the 5 stations of the engine system.

Answer 12

Intake, Compressor, Diffuser, Combustor, Exhaust

Question 13

What position should the ECL’s be in to see current fault BIT codes on the ECU’s?

Answer 13

Ground

Question 14

An Engine FAULT detected by the ECU that does not impact the normal control of the engine is a ____ fault.

Answer 14

Soft

Question 15

An engine FAULT that could cause unacceptable engine or aircraft performance is a ____ fault.

Answer 15

Hard

Question 16

When the Ignition Lock Switch is IN and ON this supplies power to the circuit of what two components on the engine for the purpose of engine starting?

Answer 16

Engine Ignition Exciter, Start Fuel Solenoid Valve

Question 17

Below 6000 ft PA what component draws fuel out of the main tank to the entering if the main tank boost pump fails?

Answer 17

Engine Driven Fuel Pump

Question 18

Identify the FADEC modes of operation the Bleed Band system automatically operates.

Answer 18

Primary and Reversionary

Question 19

Name the component on the engine that supplies the PTIT data to CAAS for display on the EICAS page on the MFD

Answer 19

PTIT Buss Bar

Question 20

Name the component that supplies the NR rotor speed data to CAAS for display on the EICAS page on the MFD.

Answer 20

Permanent Magnetic Generators in the Main Generators

Question 21

Name the component that supplies the NG speed data to CAAS for display on the EICAS page on the MFD and where is it mounted?

Answer 21

NG speed sensor mounted on the Engine Oil Pump

Question 22

Name the component mounted on the engine that supplies the engine torque data to CAAS for display on the EICAS page on the MFD?

Answer 22

Torque Junction Box

Question 23

Name the component on the engine that supplies the NP speed data to CAAS on the EICAS page on the MFD.

Answer 23

NP Speed Assembly

Question 24

Name the component that eliminates small particle build up on the engine chip detector to prevent an engine chip caution.

Answer 24

Engine CHIP Fuzz Burn-off Module

Question 25

During a preflight inspection you are checking engine fluid lines for what two faults?

Answer 25

Leaks and Chaffing

Question 26

Write out the underlined Immediate Action Steps for Single Engine Failure (ENG1 FAIL or ENG2 FAIL WARNING)

Answer 26

External Load- Jettison (as required)
FLT DIR CPLR- Uncouple
DAFCS modes- OFF

Question 27

Engine fire extinguisher bottle gauges should be checked on preflight in accordance with what chart in the TM 1-1520-271-CL?

Answer 27

Engine Fire Extinguisher Bottle Pressure Chart

Question 28

Name the system that automatically controls engine operation throughout the full operating range of the engine.

Answer 28

FADEC

Question 29

ENG FAIL WARNINGS will be displayed on which MFDs when active?

Answer 29

All 5 MFDs

Question 30

The FADEC Control Panel located on the overhead console provides what to the aircraft operators?

Answer 30

Engine Control

Question 31

With the ENG COND levers in FLT and PRI mode selected NR will be maintained at what selected speed?

Answer 31

NR Switch Selection

Question 32

2 places a chip caution will appear

Answer 32

MFD, Maintenance Panel