Citation Mustang – Electrical - SmartCockpit - Airline training guides, Aviation, Operations, Safety

From the main bus system in the tail cone, power is distributed through circuit breakers in the tail cone directly to a few electrical devices in or near the tail cone.

False.

True.

Correct! Wrong!

What does the BATT TEMP FAIL CAS message indicate?

The battery temperature sensor has failed.

Due to an abnormally high battery temperature, both temperature sensors are not available.

The battery overtemperature warning system has failed

Due to an very high battery temperature, one the two temperature sensors is not available.

Correct! Wrong!

When the BATT switch is in the EMER position, _____ is supplied from the battery bus through the emergency power relay to the emergency bus circuit breakers on each cockpit CB panel.

Emergency DC power.

AC / DC power.

AC power.

Correct! Wrong!

For engine start with a sealed lead-acid battery, minimum battery voltage is:

18 VDC.

24 VDC.

20 VDC.

28 VDC.

Correct! Wrong!

QUESTION 20 The generators are engine-starting motors that revert to generators at the completion of the start cycle. Each generator system operates independently, but power distributes evenly through bus systems that are in parallel except during fault conditions.

False.

True.

Correct! Wrong!

The wing and tail deice systems are inoperative with the battery switch in the:

NORM position.

ON position.

INTERIOR DISCONNECT position.

EMER position.

Correct! Wrong!

The battery and emergency buses normally tie to the main system, but they may isolate to only the battery or external power sources.

True.

False.

Correct! Wrong!

If a ground power unit is being used to start the engines, the generator switches should be in which position?

OFF.

ON.

Reset.

Manual.

Correct! Wrong!

A BATTERY disconnect switch is in the cockpit on the left side console panel.

This switch opens the battery disconnect relay. It is to be used in case of a battery overheat or stuck start relay.

This switch opens the battery disconnect relay. It is to be used in case of a stuck start relay.

This switch closes the battery disconnect relay. It is to be used in case of a battery overheat.

This switch closes the battery disconnect relay. It is to be used in case of a stuck start relay.

Correct! Wrong!

With the battery disconnect switch in the battery disconnect position:

The standby battery is connected to the airframe.

Do not use the switch for an extended period of time.

The keep alive for the avionics is disconnected from the airframe.

The aircraft battery is connected to the airframe.

Correct! Wrong!

With the battery switch in the EMER position and the generators OFF, there is no:

Cockpit floodlight.

Landing gear indication lights.

Exterior lights.

EICAS messages.

Correct! Wrong!

If the AFT JBOX LMT L CAS message is displayed in the CAS window, what bus or busses would be lost if the L generator fails?

L FEED BUS and L SHUNT BUS.

L AVIONICS EMER BUS.

R EXTENSION BUS.

R START BUS.

Correct! Wrong!

A GPU can be connected to the aircraft DC system through a receptacle in the fuselage below the right engine nacelle. External power is routed through the external power relay to the battery bus. The battery cannot be charged from the GPU, regardless of the battery switch position.

False.

True.

Correct! Wrong!

The battery charges from the GPU, regardless of the battery switch position. If the battery is charged using the GPU, it must be monitored. Current from most GPUs is not regulated and a battery overheat may occur.

With the battery switch in EMER and the generators OFF, battery life should be a minimum of:

30 minutes.

60 minutes.

90 minutes.

5 minutes.

Correct! Wrong!

The maximum electrical load per generator on the ground at idle is limited to:

100 amps.

200 amps.

150 amps.

50 amps.

Correct! Wrong!

With the battery switch in the EMER position, some aural warnings are NOT available, including:

Overspeed, Traffic alerts TIS, TAS, and TCAS.

Terrain awareness and warning system (TAWS) alert, Overspeed, and Traffic alerts.

Stall warning, Landing gear, Overspeed, Traffic alerts TIS, TAS, TCAS.

Terrain awareness and warning system (TAWS) alert, Autopilot disconnect and Stall warning.

Correct! Wrong!

Normal distribution of DC power is via a left and right feed bus connected by a crossfeed bus.

False.

True.

Correct! Wrong!

During normal operation, the generators share loads equally (within plus or minus 10% of the total load) via the crossfeed bus. Each starter-generator is regulated by its own generator control unit (GCU).

False.

True.

Correct! Wrong!

Battery starts are limited to:

Three engine starts per hour.

One engine start per hour.

Four engine starts per hour.

Two engine starts per hour.

Correct! Wrong!

The Mustang electrical system primarily provides 24-VDC power to operate electrical devices throughout the aircraft.

True.

False.

Correct! Wrong!

The Mustang electrical system primarily provides 28-VDC power to operate electrical devices throughout the aircraft.

What action should be taken if the engine starter fails to disengage?

IGNITION switch - NORM.

AP/TRIM DISC button - PRESS.

FADEC RESET switch - Select affected side and release.

ENGINE START DISENG switch - PRESS.

Correct! Wrong!

What is indicated by illumination of the light in the start buttons?

Start relay is closed.

Engine has not reached a stabilized idle.

Engine has been started and the generator is online.

Generator relay is closed.

Correct! Wrong!

The battery is in _____.

Underneath the left hand seat.

Under the front cabin.

The forward compartment.

The tail cone compartment.

Correct! Wrong!

With the STBY INST switch in the BATT TEST position, the pilot should see the following indication:

The red LED test light illuminated.

The green test light illuminated.

A green STBY INST message in the CAS window.

An amber BATT TEST message in the CAS window.

Correct! Wrong!

Citation Mustang – Electrical