DEN87FA111

NTSB accident investigation · Taylorcraft F21 TC · Boulder, CO · April 25, 1987

Accident · Serious injuriesField investigationFinal report
Date
April 24, 1987, 20:30 local (Apr 25, 1987, 02:30 UTC)
Place
Boulder, CO
Injuries
2 serious
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N2005CTaylorcraft F21 TC
Weather
Visual (VMC) · Night/dark
Status
Completed · report November 8, 1988
Report
Approved by Office Director
Case key
17107

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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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.

Loss of control - in flightManeuvering
Maneuver - improperPilot in command(cfi)Cause
Airspeed - not maintainedPilot in command(cfi)Cause
Stall - inadvertentPilot in command(cfi)Cause
Emergency procedure - simulatedPilot in command(cfi)Cause
In flight collision with terrain/waterDescent - uncontrolled

Analysis

The flt instructor and student plt were practicing night touch and go landings. Flt instructor reduced engine power to idle after takeoff to simulate an engine failure. He banked the acft 'steeply' to the left at a low altitude. The acft struck the ground in a wings level, nose low attitude. Exam of acft wreckage revealed no evidence of a pre-impact machanical malfunction or failure of the acft. Both occupants received serious injuries.

Aircraft

Registration
N2005C
Reported as
Taylorcraft F21 TC
Category
Airplane
Serial number
F1012
Airframe hours
728
Engine
Lycoming O-235-L2C, 118 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
Boulder Aviation
Registered owner
Bristol Enterprises Inc.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · November 21, 1986 · 150 hours before
Departed
IVS · Boulder, CO

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
25
Certificates
Flight instructor, Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Right
Flight hours
652 total · 60 in this make and model · 639 as pilot in command · 9 in the last 90 days

Weather

Conditions
Visual (VMC) · Night/dark
Wind
50° at 9 knots
Visibility
50 statute miles
Lowest ceiling
12,000 ft broken
Temperature
68 °F
Altimeter
30.00 inHg
Observed at
BJC, 7 nm away