DEN89LA118

NTSB accident investigation · Enstrom F-28C · Regina, NM · May 9, 1989

Accident · No injuriesLimited investigationFinal report
Date
May 9, 1989, 14:30 local (20:30 UTC)
Place
Regina, NM
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N88RAEnstrom F-28C
Weather
Visual (VMC) · Day
Status
Completed · report August 2, 1990
Report
Approved by Office Director
FAA report
19890509011279A
Case key
17707

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

The pilot's poorly planned approach and disregard of the helicopters performance data. Contributing to the accident was the high density altitude conditions which existed at the time of the accident.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

In flight collision with terrain/waterLanding - flare/touchdown
Terrain condition - grass
Planned approach - poorPilot in commandCause
Weather condition - high density altitudeFactor
Performance data - disregardedPilot in commandCause

Analysis

While conducting a test flt following repairs to the tail rotor due to an earlier accident the plt struck the tail rotor on the ground while transitioning from forward flt to a hover. The ground contact caused the tail rotor drive shaft to fail and the helicopter sustained substantial damage in the ensuing crash. The density altitude at the time of the accident was calculated to be 10,400 ft. the Enstrom F-28C operators handbook notes that the ground effect hover ceiling is 8,800 ft.

Aircraft

Registration
N88RA
Reported as
Enstrom F-28C
Category
Helicopter
Serial number
344
Airframe hours
688
Engine
Lycoming HIO-360-E1AD, 205 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 91
Operator
Fair, Fred
Registered owner
Rusmar, Inc.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · February 1, 1989 · 11 hours before

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
52
Certificate
Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
10,000 total · 60 in this make and model · 100 in the last 90 days · 35 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
80° at 15 knots
Visibility
30 statute miles
Lowest ceiling
5,000 ft broken
Temperature
75 °F, dew point 28 °F
Altimeter
30.00 inHg
Observed at
ALS, 100 nm away

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.

Other investigations on N88RA · 1

Matched to the same aircraft by N-number and date.