AGL Descent Knot 
Aerotime
MARCH 21, 2025
While the report draws no conclusions as to the cause of the crash, investigators set out a detailed timeline which focuses heavily on the Mitsubishi CRJ900s descent. TSB At a height of 50 feet the rate of descent had increased to 1114 feet per minute (fpm) from 672 fpm around 14 seconds before. to the right, the TSB said.
iPad Pilot News
MARCH 11, 2025
IN-FLIGHT ALERTS 500 AGL Alerts – Alerts when descending through 500 ft. AGL after having been above 1,000 ft. The alert will only sound once every 60 seconds and is automatically disabled if groundspeed is less than 40 knots. AGL (or when AGL is unknown), the descent rate exceeds 4,000 ft. per minute.
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Plane and Pilot
NOVEMBER 27, 2024
FAA weather charts can help for higher altitudes but when just a few thousand feet agl, they may be less useful. Flight idle and nose down, which normally produced a 2,000-3,000-feet descent rate, resulted in a 2,000-feet-per-minute climb. We continued our descent into Great Falls, leaving “the wave” behind and above.
Fear of Landing
APRIL 19, 2024
The helicopter turned left to return to the airport, travelling at about 85 knots. The indicated airspeed had fallen below 65 knots and was still decreasing. The helicopter was at treetop height with an indicated airspeed of zero knots when the right yaw ceased. The pilot reported two miles out.
Plane and Pilot
AUGUST 6, 2024
Even though synthetic vision might help me perform an emergency descent to a valley that might not be cloud filled, that’s pretty sketchy as a risk-mitigation strategy. Also, from when I lived out West, there was the mountaintop clearance guideline—1,000 feet for every 10 knots of wind, with 30 knots meaning no-go.
Flight Training Central
FEBRUARY 17, 2024
AIM 5-3-3 ) When unable to climb/descent at a rate of at least 500 feet per minute.( AIM 5-3-3 ) Change in the average true airspeed (at cruising altitude) when it varies by 5 percent or 10 knots (whichever is greater) from that filed in the flight plan. ( AIM 5-3-3 ) When an approach has been missed. (
Pilot Institute
MAY 4, 2024
In the Cessna 172S Pilot’s Operating Handbook (POH), the landing distance decreases by 10% for every 9 knots of headwind. For the Cessna 172, landing distance increases by 10% for every 2 knots of tailwind. Any substantial changes to speed and descent rate will destabilize the landing.
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