Casualties unknown

Instrument Training Flight Impacts Trees During ILS Approach (N61AF)

Armonk, NY, US

On April 23, 2005, a Cessna 172R (registration N61AF) operated by American Flyers was involved in an aviation accident near Armonk, NY. Investigators recorded the probable cause as: The flight instructor's failure to maintain the proper altitude\clearance during the approach, which resulted in an in-flight collision with trees. Factors in this accident were low ceilings, fog, and gusty wind conditions. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive; 9 related events involving the same aircraft type or operator are linked below.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 2026-07-04Data APIEditorial standards

During an instrument training flight, an airplane on the ILS Runway 16 approach in fog and low ceiling impacted trees about 1 mile from the runway after the pilot acknowledged a low altitude alert.

Accident Sequence

The flight instructor was conducting an instrument training flight with a student pilot. At 1513:45, the airplane was on the ILS Runway 16 approach when the pilot contacted the air traffic control tower. The controller cleared the airplane to land and informed the flight instructor that the pilot of a landing Cessna Citation reported breaking out at 200 feet. At 1517:25, the controller observed the airplane's radar target at 900 feet and issued a low altitude alert along with the current altimeter setting. The pilot acknowledged the transmission, read back the altimeter setting, and reported being at 800 feet. No further communications were received from the pilot. The airplane's last radar target was observed at 1517:39 at an altitude of 600 feet. The airplane subsequently impacted trees and came to rest in a wooded area approximately 1 mile from the approach end of runway 16.

Weather and Approach Information

A weather observation taken at the airport around the time of the accident reported wind from 190 degrees at 12 knots gusting to 16 knots, visibility of 1/2 statute mile in fog, ceiling 200 feet overcast, temperature and dew point both 12 degrees Celsius, and an altimeter setting of 29.51 inches of mercury. The approach diagram for the ILS Runway 16 approach listed a decision height of 639 feet mean sea level (200 feet above ground level) and approach minimums of 1,800 feet runway visual range or 1/2-mile visibility.

Aircraft and Pilot Information

Examination of the airplane did not reveal any pre-impact malfunctions. The flight instructor had accumulated about 815 hours of total flight experience, with about 80 hours logged as actual instrument conditions, including approximately 7 hours of instrument flight time and six instrument landing system approaches during the preceding 90 days. The student pilot had accumulated about 32 hours of total flight experience.

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Frequently asked questions

What happened in the 23 Apr 2005 Cessna 172R accident near Armonk, NY?

During an instrument training flight, an airplane on the ILS Runway 16 approach in fog and low ceiling impacted trees about 1 mile from the runway after the pilot acknowledged a low altitude alert.

What aircraft was involved and where did it happen?

The accident on 23 Apr 2005 involved a Cessna 172R, registration N61AF, operated by American Flyers, at Armonk, NY.

What was the probable cause of the accident?

The flight instructor's failure to maintain the proper altitude\clearance during the approach, which resulted in an in-flight collision with trees. Factors in this accident were low ceilings, fog, and gusty wind conditions.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20050428X00521. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.