General Knowledge 2 Flashcards
What is buffet threshold?
The point at which buffet, either high speed or low speed, is felt first
What handling characteristics come from a forward C of G?
Higher stability
Higher stick forces required
Larger stick movements required
Heavier and less responsive handling
What is the tailstrike limit on an A319?
13.9
What is the tailstrike limit on an A320?
11.7
What happens to thrust when autothrust engaged and the thrust levels are moved into the MCT detent?
When thrust levers move beyond the climb detent, thrust becomes manual and is controlled by thrust lever angle, so moving to MCT would give MCT thrust. A/THR would appear in blue, and would reactivate once thrust lever went at or below climb detent.
Where does ADR1 receive its information? And ADR2? And ADR3?
ADR 1 from Captain side AOA probe, TAT probe, Pitot probe, Static ports.
ADR 2 as above, but from the FO side.
ADR3 from standby AOA, standby pitot, standby static port and CAPTAINS TAT probe
How is ADIRU information sent to the displays, and which displays is it sent to?
Information sent to 3 DMCs (Display Management Computers), which is then sent to the EIS.
Where does DMC 3 send its information?
DMC 3 is standby and can send information to any DU
What happens if a DMC fails?
DUs controlled by that DMC will display invalid data message.
FWC will generate ECAM message to use the EIS DMC switcher.
FWC does not monitor DU status, so if a DU fails, there will be no ECAM message.
What do you do if the ADR part of the ADIRU fails?
How about the IR part?
ADR - Rotate the AIR DATA selector as appropriate
IR - Rotate the ATT HDG selector as appropriate
What is the minimum angle of descent speed?
Green dot
What is the optimum single engine ROC speed?
Green dot
What is computed in the IRs
GAAFHAT - think Inertial Reference via ring lazer gyros and accelerometers, so it’s mostly to do with aircraft movement relative to itself
Groundspeed Attitude Aircraft Position Flight Path Vector Heading Acceleration Track
What is the formula for finding out the height of a cloud using the weather radar?
Height=Distance (nm) x tilt x 100
Height is the difference between the radar top altitude and the aircraft altitude
Distance is distance between aircraft and storm cell
Tilt is the tilt setting when the storm cell disappears
An example is if there was a cell 40nm away, at a tilt of 1, then 40 x 1 x 100 = storm cell 4000ft below aircraft
After an engine start, what parameters should you look for on ECAM?
N1 under 20% EGT under 400 N2 under 60% Fuel flow under 300kg/h Grey background on N2 disappears
(2, 4, 6, 3)
What is the required altimeter accuracy?
PFD - QNH within 25 ft of airfield elevation, and within 20ft of each other
ISIS within 100ft of airfield elevation
Within 60ft of PFDs
STBY ALT within 300ft of airfield elevation
How do you disconnect autothrust?
Match donuts, then press A/THR disconnect on the thrust lever twice.
What would cause a lower optimum altitude in the MCDU PROG page?
Gross weight increases,
CI increases,
OAT increases,
Favourable winds exist at lower levels
What possibe factors affect the maximum altitude?
It it the lowest of:
Maximum Certified Altitude (structural) - Determined during certification, and is a fixed value
Buffet or manoeuvre limited altitude - Altitude at which a specific manoeuvre margin exists prior to buffet onset (1.3g or 40 degrees AoB)
Thrust limited altitude - Altitude at which sufficient thrust is available to provide a specific minimum rate of climb (eg. 300ft/min)
If flying at, or close to, the maximum operating altitude, and in a thrust-limited conditon, what do you need to be careful of?
An increase in temperature will reduce the maximum operating altitude, so it may be impossible to maintain speed and would require a descent
Are controls more, or less, sensitive at higher altitudes? Why?
More sensitive, because there is less aerodynamic damping.
As a guide, at 290kts CAS at 5000ft, a control input to gain a rate of climb of 500ft/min would generate a climb of 900ft/min if at 35000ft
Does the stall speed increase in a turn?
Yes
What are the signs of a stall?
Buffeting, Lack of pitch authority, Lack of roll control, Inability to arrest a rate of descent, Continuous stall warning
Why does engine anti-ice reduce the available engine thrust?
Because they rely on engine bleed air to provide protection. It also increases fuel consumption
What should you do if speed decreases below green dot in the cruise?
Reduce bank angle,
Select MCT,
Request descent, and use V/S until speed recovers
Continue using automation
What is the max landing weight of an A320 CEO?
66.0t
What is the max landing weight of an A320 NEO?
66.3t
Does wingtip clearance guarantee tail clearance in a turn?
Yes, except on the A321
When is the tailstrike pitch limit indicator active?
Below 400ft RA
Can an A321 complete a 180 degree turn on a 30m runway?
No
