Plane Crash List

Enstrom TH-28 N8631E

29 February 1992 · Leadville, Colorado, United States · No injuries

Summary

On 29 February 1992 at about 17:22 local time, a Enstrom TH-28 registered N8631E, operated by Enstrom Helicopter Corporation, was involved in an accident near Leadville, Colorado, United States. One person was on board and nobody was injured. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

The record

Date
at 17:22
Classification
Accident
Location
Leadville, Colorado, United States
Nearest airport
Lake County (LXV)
Coordinates
39.2409, -106.2891
Aircraft
Enstrom TH-28
Registration
N8631E
Category
Helicopter
Engines
1
Operator
Enstrom Helicopter Corporation
Operating rule
Part 91: General Aviation
Purpose of flight
Unknown
Phase of flight
Not recorded
Aircraft damage
Substantial
Weather
VMC
Light
Day
NTSB number
DEN92LA036

People

Nobody was injured.

On board Died Serious Minor Uninjured
1 0 0 0 1

Probable cause

THE PILOT MISJUDGING THE DESCENT RATE AND CONSEQUENTLY DELAYING THE FLARE. A FACTOR WAS: DOWNDRAFT.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

THIS WAS ONE OF A SERIES OF EXPERIMENTAL TEST FLIGHTS LEADING TOWARDS FAA CERTIFICATION OF THE MODIFIED HELICOPTER. DATA POINTS FOR THE HEIGHT VELOCITY CURVE HAD BEEN COLLECTED AND THE PILOT WAS ATTEMPTING TO CONFIRM THEIR ACCURACY. AT 46 KNOTS AND 400 FEET AGL, THE PILOT MADE AN INTENTIONAL AUTOROTATION. HE SAID THE SINK RATE WAS HIGHER THAN PREVIOUSLY NOTED, AND HEAVY ROTOR BLADE STALL MADE THE FLARE INEFFECTIVE. THE PILOT SAID A DOWNDRAFT MAY HAVE PRECIPITATED THE ACCIDENT.

Quoted verbatim from the NTSB record.

Other accidents in this area

Date Aircraft Location Operator Outcome Died
12 Apr 1992 Cessna 310-L
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Hugo, Colorado, United States
no coordinates
Bell, Anthony H. No injuries -
4 May 1992 Boeing 757-222
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8 Jul 1992 Piper PA-34-200T
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21 Jul 1992 Embraer EMB-120 RT
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4 Jan 1992 Cessna 152
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16 Jan 1992 Cessna 172P
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Englewood, Colorado, United States P.c. Flyers, Inc. No injuries -

All 170,864 records in United States