ORAL EXAM QUESTIONS Flashcards
What hydraulic system supplies nose wheel steering?
YELLOW
The steering hand wheels can steer the nose wheel up to how much in each direction?
+/- 75° from center
When using the rudder pedals for steering, when does the steering angle begin to reduce?
Starts reduction at 40 knots and progressively reduces to 0° at 130 knots.
What does the rudder PEDAL DISC button on the steering hand wheel do?
Pressing the button removes control of nose wheel steering from the rudder pedals until released.
What would occur if the A/SKID & N/W STRG switch were selected to OFF?
- Nose wheel steering is lost- Anti-skid is deactivated- YELLOW hydraulic system would supply the brakes
What is the minimum battery voltage?
25.6V
What would a pilot do if BAT voltage is 25.5 or below on originating preflight?
Charge the batteries with external power by selecting BAT PB to AUTO
How long should the batteries be charged?
20 minutes, then recheck the voltage
Explain how to conduct the BAT check. What if it fails the test?
- Select ELEC on SD- Turn on BAT 1 & 2 OFF then ON- Check BAT charge current is < 60 amps and decreasing within 10 seconds- If it fails the test, call maintenance
Describe the electrical power system.
- The electrical power system consists of a three-phase 115/200-volt 400- hertz constant frequency AC system and a 28-volt DC- Normally, the system produces alternating current, some of which is then transformed into direct current for certain applications.- Each of the aircraft’s three generators can supply the whole network.- If all normal AC generation is lost, an emergency generator can supply AC power.- If all AC generation is lost, the system can transform DC power from the batteries into AC power.
What would be an expected indication in the GEN pushbuttons prior to engine start?
FAULT indication.
If all AC power is lost, what happens?
DC power from the batteries is converted into AC.
Define and describe an IDG.
- Integrated Drive Generator- Takes variable engine output and gives a constant output.- A part of the generator system, not the generator itself
How would a pilot disconnect an IDG?
Lift the red guard and push the IDG pushbutton, being careful not to hold the pushbutton for longer than three seconds to not shear the shaft.
How would an IDG be reconnected?
This cannot be done by the flight crew – it is a maintenance function.
Describe the function of the BUS TIE in AUTO.
- Allows a single source of power to run entire electrical system- Allows connection of the APU GEN or EXT power to system- Inhibits multiple sources connected simultaneously
If GEN 1 fails to supply AC Bus 1, what happens?
Gen 2 (or APU GEN if available) powers the system through the bus tie.