DEN03LA018

NTSB accident investigation · Enstrom F-28C · Morrison, CO · November 23, 2002

Accident · Minor injuriesLimited investigationFinal report
Date
November 22, 2002, 18:30 local (Nov 23, 2002, 01:30 UTC)
Place
Morrison, CO
Injuries
1 minor, 1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N552CSEnstrom F-28C
Weather
Visual (VMC) · Night/dark
Status
Completed · report April 18, 2003
Report
Approved by Office Director
Parties
Federal Aviation Administration
FAA report
20021122033139A
Case key
56124

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 not maintaining clearance from the telephone lines during landing. Factors contributing to the accident were the pilot not being able to see the telephone lines, the low altitude, and the dark night.

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 objectLanding
Clearance - not maintainedPilot in commandCause
Visual lookout - not possibleFactor
Light condition - dark nightFactor
Altitude - lowFactor
Object - wire,transmission
Hard landingEmergency landing
Unsuitable terrain or takeoff/landing/taxi area - encountered
Terrain condition - ditch

Analysis

The pilot said his helicopter was approaching a landing area, located just east of a restaurant, from the south, in night visual meteorological conditions. During the approach, the pilot could not see the lighted flag on top of the restaurant, thus he could not determine the wind direction or velocity for landing. He executed a go around and began maneuvering so that he could approach the landing area from the east. The pilot said that at the "northern most point of the go around, a tail rotor strike was felt." The tail rotor struck telephone lines along the north side of a road. The pilot immediately put the helicopter down hard into a ditch alongside the road, breaking the left skid, crushing the right skid and fuselage upward, bending and twisting the main rotor blades, and bending the tail rotor blades. An examination of the helicopter's systems revealed no anomalies.

Factual narrative

On November 22, 2002, at 1830 mountain standard time, an Enstrom F-28C helicopter, N552CS, piloted by a private pilot, sustained substantial damage when it made a hard landing in a ditch along a road near Morrison, Colorado. Prior to the hard landing, the helicopter's tail rotor struck telephone lines during a landing attempt. Night visual meteorological conditions prevailed at the time of the accident. The personal flight was being conducted without a flight plan under the provisions of 14 CFR Part 91. The pilot reported minor injuries. The passenger on board reported no injuries. The flight originated at Longmont, Colorado, at 1800.

In his written statement, the pilot said he was approaching a landing area, located just east of a restaurant, from the south. The pilot said that during the approach he could not see the lighted flag on top of the restaurant, thus he could not determine the wind direction or velocity for landing. He said he executed a go around and began maneuvering so that he could approach the landing area from the east. The pilot said that at the "northern most point of the go around, a tail rotor strike was felt." The pilot immediately put the helicopter down on a road.

An examination of the wreckage showed the left skid broken upward. The right skid was bent upward and the bottom fuselage, aft of the pilot seat, was crushed upward. Both tail rotor blades were bent near mid span. Both main rotor blades were bent and twisted. Control continuity was confirmed. An examination of the helicopter's systems revealed no anomalies.

Aircraft

Registration
N552CS
Reported as
Enstrom F-28C
Category
Helicopter
Serial number
437
Airframe hours
3,254
Engine
Lycoming HIO-360-EIAD, 205 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
David Copp
Registered owner
Horizon Flying Club, LLC
Airworthiness certificate
Standard, Normal
Last inspection
Annual · September 16, 2002 · 34.3 hours before
Departed
2V2 · Longmont, CO
Destination
Morrison, CO

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
55
Injuries
Minor
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Last flight review
July 29, 2002
Seat
Left
Flight hours
264 total · 233 in this make and model · 165 as pilot in command · 48 in the last 90 days · 11 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Night/dark
Wind
170° at 6 knots
Visibility
10 statute miles
Lowest ceiling
13,000 ft broken
Temperature
52 °F, dew point 18 °F
Altimeter
30.10 inHg
Observed at
APA, 16 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 N552CS · 1

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