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minimum climb rate.
10. What is the speed referenced when the FMA displays SRS during a go-around?
During go-around, the reference speed is Vapp or the speed which existed at go-around initiation, whichever is
higher. Go-around mode combines the SRS vertical mode and the GA TRK lateral mode.
11. Can the autopilot be engaged with both flight directors off?
 If the autopilot is engaged when both flight directors are OFF, the autopilot will engage in either HDG V/S
or TRK FPA mode depending on which mode is selected on the FCU.
 If an autopilot is engaged with at least one FD ON, the autopilot will engage in the active FD mode(s).
12. An amber THR LK flashes on the FMA. What does this indicate?
Thrust Lock function is active - See question 2 above.
2009 – 2010 TGS Study Guide
___________________________________________________________________________________________
____________________________________________________________________________________________
Unofficial Airbus Study Site www.airbusdriver.net
Hydraulics
1. When will the YELLOW ELEC pump operate automatically?
When the lever of the cargo door manual selector valve is moved to OPEN or CLOSE.
2. When will the RAT deploy automatically?
If both AC bus 1 and 2 are lost and the airspeed is above 100 kts, the RAT automatically deploys and pressurizes
the Blue hydraulic system, which drives the hydraulically driven emergency generator. Pressing the EMER ELEC
PWR MAN ON pb has the same effect.
3. What is the purpose of the priority valve in the Blue Hydraulic System?
The priority valve cuts off hydraulic power from the heavy load using units.
4. What system pressure is indicated on the Triple Pressure Indicator?
 ACCU PRESS – pressure in the yellow brake accumulators.
 BRAKES – yellow pressure delivered to the left and right brakes, as measured upstream of the servo
valves.
5. The yellow system has an engine driven pump, what other means do we have to pressurize the
yellow system?
 Yellow electric pump
 Power Transfer Unit
 Hand pump for cargo doors
6. What occurs to the yellow hydraulic system functions when a cargo door is being opened or closed?
The other Yellow system functions are inhibited (except alternate braking and engine 2 reverser).
7. After emergency gear extension do the gear doors remain open?
Yes
8. Can the RAT be deployed manually?
The RAT MAN ON pb is used to deploy the RAT manually. Activating this pb will only pressurize the blue system,
but will not activate the emergency generator.
Landing Gear
1. What is the maximum gear extension speed VLO?
250 KIAS
2. Is nose wheel steering available after emergency gear extension?
 Non-enhanced: No
 Enhanced: Yellow hydraulic system is used by NWS and will be available after a landing gear manual
extension.
3. What does the RED ARROW on the landing gear selector lever indicate?
Illuminates if the landing gear is not locked down when the aircraft is in the landing configuration, and a red
warning appears on the ECAM.
2009 – 2010 TGS Study Guide
___________________________________________________________________________________________
____________________________________________________________________________________________
Unofficial Airbus Study Site www.airbusdriver.net
4. Is it possible to extend the gear at any speed (high speed, for example)?
A safety valve shuts off hydraulic power to the gear when indicated airspeed is above 260 knots. The valve opens
again when the airspeed decreases below 260 knots, provided the gear lever is placed down.
5. What does the red UNLK light in the LDG GEAR indication panel mean?
 Illuminates red if the gear is not locked in the selected position.
 Illuminates green if the gear is locked down.
6. What is the maximum gear retraction speed VLO?
220 KIAS
7. What is the maximum gear extended speed VLE?
280 KIAS/0.67M
8. What is the maximum gear extension altitude?
25,000 feet
9. When using the rudder pedals for nose wheel steering during takeoff, the steering angle starts to
reduce at what speed and progressively reduces to zero degrees at _130_ knots?
The BSCU receives inputs from the captain's and F/O's steering handwheels (which are algebraically summed),
rudder pedals, or autopilot. When using the handwheels, nosewheel steering angle is reduced above 20 knots
ground speed. As speed increases, the angle decreases progressively to 0° at 70 knots. When using the rudder
pedals, nosewheel steering angle is reduced above 40 knots ground speed. As speed increases, the angle
decreases progressively to 0° at 130 knots.
　
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