T.O Perf Flashcards
Explain T.O Shift
What is the T.O Shift for:
RWY 25 Twy E? (3050m TOR)
RWY 07 twy D? (3050m TOR)
T.O shift is the difference between the runway threshold and the take off position of the AC.
RWY 25 Twy E = 2700m (8858’) so T.O Shift is 350m
RWY 07 Twy D = 1415m (4642’) so T.O Shift is 1635m
OAT is obtained in the ATIS and gross error checked against the NTD. What is the Brize ATIS Frequency?
126.500
Define V1, VR & V2 and the actions during TO.
CHECK T.O Data will appear if flap or T.O shift entry is changed after
When MOS is selected, V1 label becomes VSTOP
V1 - Decision speed (Hands off TL)
VR - Rotate
V2 - Takeoff Safety Speed - is the minimum speed that needs to be maintained up to acceleration altitude, in the event of an engine failure after V1. Flight at V2 ensures that the minimum required climb gradient is achieved, and that the aircraft is controllable.
Define the operating speeds:
- M3, M2 & M1
FMS uses estimated data (weight, cg, altitude) in computing operating speeds on the FM format. The Prims use current data to compute speeds displayed on PFD. Consequently, there may be a discrepancy between the speeds displayed in the T.O perf page & the PFD.
M Speeds are the minimum recommended speeds for flap retraction during T.O. ensuring that the ac remains above VLS upon retraction.
M3 = Conf 3 to 1
M2 = Conf 2 to 1
M1 = Conf 1 to 0
Define the operating speeds:
- Green Dot
FMS uses estimated data (weight, cg, altitude) in computing operating speeds on the FM format. The Prims use current data to compute speeds displayed on PFD. Consequently, there may be a discrepancy between the speeds displayed in the T.O perf page & the PFD.
Green Dot speed provides the best lift to drag ratio and is the best climb gradient speed in clean configuration.
The green dot speed is used as:
- Final T.O Speed
- Holding Speed with flaps retracted
- Target speed in Mgd mode, in clean config when the approach phase of the FMS is activated
- The drift down speed in the event of an engine failure.
Explain the difference between TOGA & UPRATED power limits, when used & time limits associated with each.
UTO increases engine power & NP (860 vs TOGA 842 RPM) and is to be used in theatre (F.O.B only) to increase climb performance.
The time limitation for TOGA & UTO is identical. 5 mins AEO & 10 mins OEI.
The Flap setting input is calculated via the EFB. What alert will ECAM flag & when prior to take off?
The flap drop down allows selection of flap 1-4 but 4 must not be used for TO.
F/CTL T.O Flaps disagree will flash if flap selection is not in agreement with figure enterred on TO PERF page.
This may occur due to:
crew error prior to taxi checks.
crew not selecting correct flap after taxiing clean in icing conditions.
THS Setting
Max difference & where checked
THS - Trimmable Horizontal Stabiliser
THS FOR input must be <1% compared to FMS CG (GWCG & Pitch trim band CG)
Operating Standards
Explain NOS
NOS - Normal Operating Standard - Data & procedures certified and intended for use during normal ops.
Operating Standards
Explain ROS
ROS - Reduced Operating Standard
data certified in ROS used when data certified in NOS would not enable succesful execution of the mission. It provides reater capability over NOS. (Greater payload, shorter field length requirements with an increase in risk.)
Operating Standards
Explain ROS
MOS - Military Operating Standard
Data certified in MOS used when data certified in NOS & ROS would not enable succesful execution of the mission. It provides reater capability over ROS with an increase in risk.
Define Thrust Reduction Altitude
Explain how it is calculated.
What is the THR RED Alt for EGVN?
Altitude at which the crew should reduce power from TOGA to CLB.
Calculated as:
The eleveation of the departure Airfield + Default 1500’
EGVN - 287’ = (300’ + 1500 = 1800’)
Always round up to the nearest 50/100’
Define Acceleration Altitude
Explain how it is calculated
What is the Accel Alt for EVGN
The acceleration altitude is limited by the lowest AT or AT or BELOW altitude constraint in the active F/PLN. The message NEW ACCEL ALT: HHHHH is displayed in the FM format when this limitation applies. However, this can be overwritten if req’d.
Altitude at which the AC accelerates towards initial climb speed.
Calculated as:
the elevation of the departure airfield +
default 3000’ (NADP1) or 1500’ (NADP2)
EVGN = 3300’ (NADP1) or 1800’ (NADP2)
Define Engine Out Accel Altitude
Explain how it is calculated
What is the main crew action at EOAA?
Indicates the acceleration altitude when the engine-out mode is active. can be overwritten by the crew.
How calculated?
Crew action at EOAA:
1. Select ALT Push button
2. Clean up the aircraft and maintain TOGA (Disregard LVR MCT)
3. At green dot speed. Select cleared altitude, pull.
4. Select thrust levers MCT and maintain Green dot.
Define transition altitude & where found.
Transition Alt is where the crew changes alt reference to STD.
The default corresponds to the transition alt of the departure alt in the NAVDB.
