Performance Flashcards
What defines a balanced field?
It’s where the accelerate-go distance equals the accelerate-stop distance (i.e. shortest takeoff field length).
When is a runway considered to be wet?
When it’s well soaked (there is sufficient moisture on the runway surface to cause it to appear reflective) but without significant areas of standing water.
When is a runway considered to be contaminated?
When more than 25% of the runway surface area (whether in isolated areas or not), within the required length and width being used, is covered by surface water more than 0.125 inch (3 mm) deep, or by slush or loose snow equivalent to more than 0.125 inch (3 mm) of water.
What’s the difference between minimum and maximum level off altitudes on the RATED EPR T.O. DATA page 3/3 of the MCDU?
The Minimum Level Off Altitudes (AGL and MSL) are the minimum altitude to which you must climb on one engine at V2, before you are clear of obstacles and can begin accelerating and raising flaps.The Maximum Level Off Altitudes (AGL and MSL) are simply the maximum altitude attainable by the aircraft climbing at V2 with one engine operating at maximum thrust for 10 minutes.
What’s the difference between “Reference Zero” and DER on the RATED EPR T.O. DATA page 3/3 of the MCDU?
Reference Zero is that point (on the runway surface) where the aircraft will reach 35 ft above the runway surface when an engine fails at V1. The second reference point used to measure altitudes and the beginning of climb gradients is the Departure End of Runway (DER). Unlike the “REF 0” position which is variable, the DER is a fixed position and is the measuring reference used for SID’s.
What are the benefits of using FLEX EPR?
It reduces engine wear/maintenance and prolongs engine life by reducing the high turbine gas temperatures that occur when using rated takeoff EPR. A second, important benefit is the reduction of sideline noise during the takeoff profile.
What’s the definition of V2?
The target speed to be attained at the 35 foot height following an engine failure.
What’s the definition of VSE?
The recommended airspeed for single-engine climb in the enroute (clean) configuration.
What’s the benefit of taking off with 10° flaps?
Results in higher climb gradients, and will permit higher takeoff weights when climb limited or obstacle clearance limited.
Can you interpolate on takeoff tabulated data?
Interpolation for intermediate conditions of takeoff weight, ambient temperature, airport pressure altitude, or field length is not recommended due to the non-linearity of the performance data. To ensure conservatism in airplane performance for takeoff conditions which fall between the given values, use the next higher weight, higher ambient temperature, higher airport pressure altitude and the next shorter field length.
What is effective runway length?
It’s field length corrected for:
Wind
Runway slope
Ground spoilers inoperative
Thrust reversers inoperative
When flaps are properly set and the GND SPLR switch is selected to ARM, what happens to the Vspeeds on the SMC’s?
They box to indicate the FMS is ready for takeoff
What’s the difference between first and second segment climb?
First segment climb begins at the point where the airplane becomes airborne and ends when the gear is fully retracted.
Second segment begins at the end of the first segment and ends at 1,500 feet or obstacle clearance level off.
What are some common pilot errors that significantly increase landing distance?
Non-stabilized approach Excessive speed Extended flair Delayed touchdown Excessive height Delayed braking
