Is VREF approach speed?

The final approach speed is based on the reference landing speed, VREF. VREF usually is defined by the aircraft operating manual (AOM) and/or the quick reference handbook (QRH) as: 1.3 x stall speed with full landing flaps or with selected landing flaps.

What is VREF landing speed?

The regulations define Vref as “the speed of the airplane, in a specified landing configuration, at the point where it descends through the 50-foot height in the determination of the landing distance.” You may have heard pilots refer to this point in the landing approach as when the airplane is “crossing the fence” or …

What is Vapp speed in aviation?

Definition. VAPP is the final approach speed when the Slats/Flaps are in landing configuration and the landing gears are extended. VAPP is displayed in the FMS PERF APPROACH page.

Is VREF the same as Vapp?

Vapp is basically just Vref + wind correction (usually 5 KT IAS, sometimes higher). Well, ideally you want to touchdown at Vref. Vapp is basically just Vref + wind correction (usually 5 KT IAS, sometimes higher).

What does VREF stand for in aviation?

VREF or vref may stand for: Vancomycin-resistant Enterococcus faecium, an antibiotic-resistant microorganism. VREF speed, the reference landing approach speed of an aircraft. Voltage reference, an electronic device that ideally produces a fixed (constant) voltage irrespective of other factors.

What is Vapp and VREF?

VAPP – Approach Speed This is the operational speed during landing, determined with flaps in landing configuration and landing gears extended. It is the reference speed increased by wind factor. VAPP = VREF + Wind Factor. Wind Factor is the highest of: • 1/3rd of the head wind velocity.

How is Vapp speed calculated?

VAPP = VLS plus 1/3 of the tower headwind component. The value of VAPP is limited so that it is never less than VLS + 5 or more than VLS +15. As a result, VAPP is increased above its minimum value for runway headwinds above 15 knots.

What is the reference stall speed?

Definition. 1.3 times the stalling speed in the stated landing configuration and at the prevailing aircraft weight. This is the speed required as the landing runway threshold is crossed at a height of 50 feet in landing configuration if the calculated aircraft performance is to be achieved.