Electrical System

Question 1

What are the components of the electrical system?

Answer 1

• 28 VDC, 300 amp starter/generator
• 24 VDC lead acid battery
• 24 VDC aux battery
• 28 VDC external power receptacle

Question 2

How many buses does the T-6 contain, and what are they?

Answer 2

2, the battery bus and generator bus

Question 3

What does the bus tie switch do?

Answer 3

Allows isolation of the buses if required

Question 4

What supplies primary aircraft power?

Answer 4

The generator function of the starter/generator

Question 5

What does the generator supply power to?

Answer 5

All equipment on both the generator and battery buses

Question 6

What does the generator do besides power the buses?

Answer 6

Charges the battery and aux battery to 24 VDC

Question 7

What regulates and monitors the generator?

Answer 7

Generator Control Unit

Question 8

Where is the Generator Control Unit located?

Answer 8

Under a panel on the right side of the aft cockpit

Question 9

What does the Generator Control Unit provide?

Answer 9

• Voltage regulation
• Overvoltage and undervoltage protection
• Generator overload protection

Question 10

What will the Generator Control Unit do if it senses a malfunction?

Answer 10

Trip the generator offline

Question 11

What is power from the generator controlled by?

Answer 11

A generator control switch, placarded GEN, on the right forward switch panel in each cockpit

Question 12

If the GEN switch is set to ON in one cockpit, what happens in the other cockpit?

Answer 12

The GEN switch is set to OFF

Question 13

How is power provided for the GEN switches?

Answer 13

A circuit breaker labeled GEN SW on the front cockpit generator bus circuit breaker panel

Question 14

How is the generator bus divided?

Answer 14

Into front and rear buses for the respective cockpits

Question 15

What does the front generator bus power?

Answer 15

The rear generator bus and front cockpit avionics bus

Question 16

How is the rear cockpit avionics bus powered?

Answer 16

By the forward generator bus through the front cockpit avionics bus

Question 17

What is the rear cockpit generator bus controlled by?

Answer 17

AFT GEN circuit breaker on the front cockpit generator bus circuit breaker panel

Question 18

What are the front and rear cockpit avionics buses controlled by?

Answer 18

FWD AVI and AFT AVI respectively on the front cockpit generator bus circuit breaker panel

Question 19

How many battery buses are there?

Answer 19

2, front cockpit and aft cockpit

Question 20

Where does the rear cockpit battery bus receive power from?

Answer 20

The front cockpit battery bus

Question 21

How does the rear cockpit avionics bus receive power?

Answer 21

From the front cockpit battery bus through the front cockpit avionics bus

Question 22

What controls power to the rear cockpit battery bus?

Answer 22

AFT BAT circuit breaker on the front cockpit battery bus circuit breaker panel

Question 23

What controls power to the front and rear cockpit avionics battery buses?

Answer 23

FWD AVI and AFT AVI respectively, on the front cockpit battery bus circuit breaker panel

Question 24

What is the hot battery bus directly connected to and powered by?

Answer 24

The battery whenever the battery is installed on the aircraft

Question 25

What does the hot battery bus do?

Answer 25

- Continuous essential power to components which are required to operate continuously or may be necessary in an emergency - Doesn't matter what position battery switches are in

Question 26

What components are powered by the hot battery bus?

Answer 26

- FDR MAINT - Ram air valve - ELT - Emergency flaps - Clocks - OBOGS - Battery switch

Question 27

What are the components of the secondary power system?

Answer 27

- 24 VDC 42 amp-hour battery | - 24 VDC, 5 amp-hour aux battery

Question 28

What is the purpose of the battery?

Answer 28

- Provides power for engine starts | - Powers all electrical systems (except A/C) in the event of a generator failure with the bus tie closed

Question 29

What controls battery power?

Answer 29

The battery switch , labeled BAT on the right forward switch panel in each cockpit

Question 30

If the BAT switch is on in the front cockpit, what position is it in in the rear cockpit?

Answer 30

OFF

Question 31

What provides power for the battery switches?

Answer 31

BAT SW circuit breaker on the battery bus circuit breaker panel in the front cockpit

Question 32

What is the purpose of the Auxiliary Battery?

Answer 32

Supplies power for a minimum number of aircraft systems and avionics in the event of failure of the generator and primary battery

Question 33

How is the Auxiliary Battery controlled?

Answer 33

The auxiliary battery switch, placarded AUX BAT, on the right forward switch panel

Question 34

What is external power used for?

Answer 34

Powering all T-6 systems, to include engine start

Question 35

How is external power applied to the aircraft

Answer 35

Through the battery bus with the BAT switch in the ON position

Question 36

What helps protect against excessive voltage from the external power system?

Answer 36

A voltage sensor located between the external power receptacle and external power relay

Question 37

What happens if the voltage sensor detects overvoltage from external power?

Answer 37

It disconnects external power from the aircraft electrical system

Question 38

What provides power for the Instrument Panel Lighting System?

Answer 38

INST circuit breaker on the battery bus circuit breaker panel

Question 39

What provides power for the Side Lights?

Answer 39

SIDE circuit breaker on the generator bus circuit breaker panel

Question 40

What provides power for the Flood Lights?

Answer 40

FLDT circuit breaker on the battery bus circuit breaker panel

Question 41

What provides power for the utility and knee board lights?

Answer 41

UTIL circuit breaker on the battery bus circuit breaker panel

Question 42

Where is the landing light located?

Answer 42

Aft and inboard of the left main landing gear strut

Question 43

When is the landing light exposed?

Answer 43

When the landing gear is extended

Question 44

How do you activate the Landing Light?

Answer 44

By a switch placarded LDG on the trim control panel

Question 45

What is unique about the landing light switch?

Answer 45

The head has three horizontal bumps to assist in identifying by feel

Question 46

Where is the taxi light located?

Answer 46

Aft and inboard of the right main landing gear strut

Question 47

When is the taxi light exposed?

Answer 47

When the gear are extended

Question 48

How is the taxi light activated?

Answer 48

By a switch placarded TAXI on the trim control panel

Question 49

What supplies power to the landing light?

Answer 49

LDG circuit breaker on the battery bus circuit breaker panel

Question 50

What supplies power to the taxi light?

Answer 50

TAXI circuit breaker on the generator bus circuit breaker panel

Question 51

Where are the navigation lights located?

Answer 51

At the leading and trailing edges of each wing tip

Question 52

Where are the anti-collison lights located?

Answer 52

At the leading edge of each wing tip

Question 53

What happens with the NAV switch in the ON position?

Answer 53

The red and green wingtip navigation lights are continuously illuminated, as well as the white position lights at the trailing edge of each wing tip

Question 54

What happens with the ANTI-COLL switch is in the ON position?

Answer 54

The anti-collision strobe lights at each wing tip flash synchronously at a rate of about 30 times per minute

Question 55

What provides power for the anti-collision lights?

Answer 55

COLL circuit breaker on the battery bus circuit breaker panel

Question 56

What provides power for the navigation lights?

Answer 56

NAV circuit breaker on the generator bus circuit breaker panel

Question 57

What is a bus?

Answer 57

A conductor or assembly of conductors for collecting electric current and distributing them to outgoing feeder circuits