PERFORMANCE
AIRPLANE
FLIGHT
MANUAL
5-01 CTA APPROVED
Page 8 code 01 REVISION 2
AFM-1385
MINIMUM CONTROL SPEED IN THE AIR - V
MCA
It is the minimum speed at which, when the critical engine is suddenly
made inoperative, it is possible to maintain control of the airplane with
the remaining engine at takeoff thrust, and maintain a straight flight
with an angle of bank of not more than 5°.
MINIMUM CONTROL SPEED DURING LANDING - V
MCL
During one engine inoperative approach or landing configuration, it is
the minimum speed that is possible to maintain control of the airplane
within defined limits while applying variations of power.
ENGINE FAILURE SPEED - V
EF
It is defined as the calibrated airspeed at which the critical engine is
assumed to fail.
V
1
SPEED
It is the speed selected for each takeoff, based upon approved
performance data and specified conditions, that is represented as
follows:
- The maximum speed by which a rejected takeoff must be initiated
to assure that a safe stop can be completed within the remaining
runway, or runway and stopway or;
- The minimum speed that assures that a takeoff can be safely
completed within the remaining runway, or runway and clearway,
after failure of the most critical engine at a designated speed; and
- The single speed that permits a successful stop or continued
takeoff when operating at the minimum allowable field length for a
particular weight.
NOTE: - Safe completion of the takeoff includes both attainment of
the designated screen height at the end of the runway or
clearway, and safe obstacle clearance along the designated
takeoff flight path.
- Reference performance conditions for determining V
1
may
not necessarily account for all variables possibly affecting a
takeoff, such as runway surface friction, failures other than a
critical engine, etc.
BALANCED V
1
It is the V
1
speed that assures a balanced takeoff.
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