SY208

Question 1

Which T-6A environmental system is an engine-driven vapor cycle system?

Answer 1

Air Conditioning

Question 2

Fresh air is distributed to the main cockpit duct and then output through the ______.

Answer 2

footwarmers or defog vents

Question 3

On the ground, the fresh air blower is activated by the ______.

Answer 3

weight-on-wheels switch on the landing gear

Question 4

The RAM AIR FLOW switch is overridden and the fresh air valve closed when the aircraft reaches an altitude of about ______ feet MSL.

Answer 4

8000

Question 5

While in flight, cool air from the ______ passes through the heat exchanger, draws heat from the bleed air, and is then exhausted through a vent in the lower right cowling.

Answer 5

ram air inlet

Question 6

As the TEMP CONTROL switch is turned toward COLD, the heat exchanger bypass valve opens up and more cool air from the heat exchanger passes into the cockpit.

Answer 6

FALSE - if the heat exchanger bypass valve opens up, it would result in more warm air into the cockpit

Question 7

Which control, when activated, prevents engine compartment fumes from entering the cockpit through the environmental system after an engine shutdown situation?

Answer 7

Firewall shutoff handle

Question 8

Cockpit air temperature is automatically adjusted between ______ Fahrenheit with the TEMP CONTROL switch set to AUTO.

Answer 8

60° and 90°

Question 9

When the DEFOG switch is ON and the Vent Control Lever is set to CANOPY, a higher volume of bleed air in the system causes ambient cockpit air to be drawn into the heating system ejector, mixed with bleed air in the main cockpit duct and flow downstream to the windshield and canopy defog ducts.

Answer 9

True

Question 10

Placing the vent lever in the ______ position causes the valve at the front cockpit assembly to direct the warm air into the windshield defog duct.

Answer 10

CANOPY

Question 11

Which control opens the defog valve and provides a higher volume of bleed air flow to the heating system ejector?

Answer 11

DEFOG switch

Question 12

Which air conditioner component converts vaporized refrigerant to a liquid?

Answer 12

Condenser

Question 13

A panel in the ______ side of the fuselage allows access for maintenance personnel to recharge the
system refrigerant when necessary.

Answer 13

forward right

Question 14

The ______ will produce airflow at up to 350 cubic feet per minute at the HI setting.

Answer 14

evaporator blowers

Question 15

Cockpit pressure altitude is maintained by the pressurization control valve at ______ feet until a
cockpit differential pressure of 3.6 ± 0.2 psi is reached at 18,069 feet.

Answer 15

8,000

Question 16

Which PRESSURIZATION switch position opens the control valve, allows bleed air
inflow to continue but does not open the fresh air valve?

Answer 16

DUMP position

Question 17

The safety valve receives a signal from the ΔP regulator if the cockpit differential pressure exceeds
______ psi.

Answer 17

4.0

Question 18

The anti-G valve on the left side console in each cockpit is opened by ______ during maneuvers.

Answer 18

increasing positive G force

Question 19

The T-6A anti-G system helps maintain ______ during high G maneuvers.

Answer 19

normal blood circulation

Question 20

Which regulator lever controls system electrical power and oxygen flow?

Answer 20

Oxygen regulator supply lever (GREEN - ON/OFF)

Question 21

An ______ is installed near each regulator which allows the pilot to continue breathing ambient cockpit air if OBOGS should fail.

Answer 21

anti-suffocation valve

Question 22

Approximately three minutes after OBOGS is activated, the ______ annunciator will light if there is a system failure during the system self test.

Answer 22

OBOGS FAIL

Question 23

Engine bleed air for the cockpit heating system is supplied from the ______.

Answer 23

right side engine compressor P3 port

Question 24

The engine-driven air conditioner compressor pumps refrigerant in vapor form to the ______.

Answer 24

condenser

Question 25

Which switch controls the position of the fresh air valve.

Answer 25

RAM AIR FLOW switch

Question 26

Cockpit pressure altitude and differential pressure are shown on the ______ on the lower right side of the instrument panel.

Answer 26

alternate engine data display

Question 27

Which annunciator lights when the pilot presses the BIT button on the regulator to start an Initiated OBOGS BIT (I-BIT) after the oxygen concentration subsequently falls below normal.

Answer 27

OBOGS FAIL announciator

Question 28

Placing the Defog switch to ON opens the ______ which causes a higher volume of bleed air to pass through the heating system ejector.

Answer 28

defog valve

Question 29

Which regulator concentration lever position will cause the OBOGS concentrator to provide the highest oxygen concentration possible.

Answer 29

oxygen regulator concentration lever (WHITE - normal/MAX) - MAX position

Question 30

In the cockpit evaporator modules, ______ is drawn through coils which contain liquid refrigerant.

Answer 30

warm cockpit air

Question 31

Which annunciator will light if the inflow air temperature exceeds 300° Fahrenheit.

Answer 31

DUCT TEMP

Question 32

After takeoff, fresh air is supplied through the ______.

Answer 32

ram air inlet on top of the cowling

Question 33

The air conditioning system only operates when the engine is on and functioning with the ______ and
the ______.

Answer 33

generator on-line; AIR COND or DEFOG switch ON

Question 34

The amber CKPT ALT light will illuminate when cockpit pressure altitude exceeds ______ feet.

Answer 34

19,000

Question 35

The ECS has two temperature sensors to alert the pilot of ______ conditions in the ducting.

Answer 35

overtemperature

Question 36

Which control is used to test the anti-G system by allowing bleed air to flow through the anti-G valve and inflate the anti-G suit?

Answer 36

anti-G test button

Question 37

What annunciator will illuminate if the low pressure switch is closed?

Answer 37

The red OBOGS FAIL annunciator. This occurs
whenever there is low bleed air pressure before the
concentrator, such as, prior to engine start or in the
event of a loss of bleed air.