Non-Precision Straight-in Descent Angle Calculator

Note: Units conversion used by FAA: 1 NM = 6076.11548 ft

Rates and Time of Descent per Ground Speeds

Angle   ° <=> %   descent angle (standard=2.50°~3.77°, common=3°)
Distance   NM   distance from FAF to MAPt
  (other)  
Ground Speed   70 80 90 100 110 120 130 140 150 160 kts
Descent Rate   ft/min
Time of Descent   min:sec
Decline   ft   (altitude drop from FAF to MAPt)


 

Altitude of Descent per Distance

Angle   ° <=> %   descent angle (standard=2.50°~3.77°, common=3°)
THR   ft   threshold altitude (MSL)
TCH   ft   touchdown elevation (from THR)
  (other)  
Distance   0.5 1 2 3 4 5 6 7 8 NM
FAF Altitude   ft (MSL)
MDA Elevation   ft (from THR)


 

Distance of Descent

Angle   ° <=> %   descent angle (standard=2.50°~3.77°, common=3°)
FAF   ft   FAF altitude (MSL)
THR   ft   threshold altitude (MSL)
TCH   ft   touchdown elevation (from THR)
 
Distance   ft  <=> NM


 

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