Aircraft Battery Voltage Procedures

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Questions and Answers

Which of the following components is NOT involved in checking the APU fire detection and extinguishing system?

APU FIRE pb-sw

MASTER WARN light

ECAM

APU START pb-sw (correct)

The APU MASTER SW pb-sw should be set to ON before the APU START pb-sw for optimal APU performance.

True

What should the flight crew do if batteries are the only power source?

They should turn on the APU pb on the ECAM control panel.

In cold weather conditions, the flight crew may observe a bleed pressure up to _____ PSI on the APU SD page.

12 Signup and view all the answers

Match the following APU components with their functions:

APU FIRE pb-sw = Triggers APU fire warning APU AGENT light = Indicates APU fire agent discharge APU FIRE TEST pb = Tests fire detection system APU START pb-sw = Initiates APU startup sequence Signup and view all the answers

What is the responsibility of the Pilot in Command regarding gear pins?

Ensure gear pins are stowed correctly Signup and view all the answers

To ensure battery voltage is above 50%, BAT 1 and BAT 2 should both show a voltage of above 25.5 V.

True Signup and view all the answers

What should the selection be set to after checking the battery voltages?

APU position Signup and view all the answers

The Pilot in Command (PIC) must ensure the correct number of _______ are stowed onboard.

gear pins Signup and view all the answers

Match the components with their respective actions:

ENG 1, 2 Masters Levers = Control engine power Wipers = Clear windshield Mode selector = Adjust radar settings Gain knob = Control radar sensitivity Signup and view all the answers

What should be done if the battery voltage is at or below 25.5 V?

Charge for approximately 20 minutes. Signup and view all the answers

If the battery voltage is above 25.5 V, no checks are needed on BAT 1 and BAT 2.

False Signup and view all the answers

What should be done if the AVAIL light is on?

Check the EXT PWR push-button switch. Signup and view all the answers

If the aircraft has been electrically supplied during the last 6 hours, the battery voltages should be above ______ V.

23.5 Signup and view all the answers

Match the battery voltage conditions with their required actions:

At or below 25.5 V = Charge for 20 minutes Above 25.5 V = Check BAT voltages Lower than 23.5 V on APU start = Risk of APU start abort AVAIL light on = Check EXT PWR push-button switch Signup and view all the answers

What happens if the aircraft is supplied only by batteries for 5 minutes?

Ground horn triggers. Signup and view all the answers

The simultaneous use of EXT PWR B and APU GEN is possible.

False Signup and view all the answers

What is the action required if the EXT PWR does not come on during operation?

Reset using the EXT PWR. Signup and view all the answers

Study Notes

Battery Voltage Procedures

If the battery voltage is at or below 25.5 V, a charging cycle of about 20 min is required.
Check BAT 1 pb-sw, BAT 2 pb-sw and APU BAT pb-sw.
Check on ELEC DC SD page, battery contactors closed and batteries charging.
After 20 min: Check BAT 1 pb-sw, BAT 2 pb-sw and APU BAT pb-sw.
After the check, the selector should remain on the APU position.

Battery Voltage Above 25.5 V

If the battery voltage is above 25.5 V:
Check BAT 1 pb-sw, BAT 2 pb-sw and APU BAT pb-sw
After the check, the selector should remain on the APU position.

Aircraft Supplied by Batteries Only

If the aircraft has been electrically supplied by batteries only during the last 6 hrs:
In case of APU start on battery only, perform the following check:
Check BAT 1 pb-sw, BAT 2 pb-sw and APU BAT.

Avail Light is On

If the Avail light is on:
If only one electrical power is available, ground personnel should connect EXT PWR A since EXT PWR B does not permit to supply directly GND/FLT buses without energizing the total network.
The simultaneous use of EXT PWR B and APU GEN is not possible.

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Description

This quiz covers essential procedures for monitoring and managing aircraft battery voltage levels. It includes steps for charging, checking battery switches, and handling situations involving aircraft operated solely on battery power. Familiarize yourself with these procedures to ensure aircraft safety and operational efficiency.