DEN90LA126

NTSB accident investigation · Cessna 172 · Boulder, CO · June 7, 1990

Accident · No injuriesLimited investigationFinal report
Date
June 6, 1990, 20:00 local (Jun 7, 1990, 02:00 UTC)
Place
Boulder, CO
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N2723ECessna 172
Weather
Visual (VMC) · Day
Status
Completed · report September 15, 1992
Report
Approved by Office Director
Case key
17943

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 failure to touch down at the proper point, his misjudgment of the distance required for takeoff following the touch and go, and his delayed decision to abort the takeoff.

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.

OverrunTakeoff - aborted
Touch-and-go - attemptedPilot in command
Proper touchdown point - exceededPilot in commandCause
Distance - misjudgedPilot in commandCause
TotalPilot in commandFactor
Aborted takeoff - delayedPilot in commandCause
Nose overLanding - roll
Terrain condition - downhill
Terrain condition - rough/uneven
Landing gear,nose gear - failure,total

Analysis

The pilot stated he was performing touch and go landings on runway 08. He had completed one landing and 'landed a bit too long' on the second. He realized he did not have enough runway remaining to takeoff and retarded the throttle and applied 'heavy' braking. The airplane rolled off the end of the runway, down an embankment and nosed over. The pilot received his private pilot certificate several days before the accident.

Aircraft

Registration
N2723E
Reported as
Cessna 172
Category
Airplane
Serial number
17271306
Airframe hours
2,520
Engine
Lycoming O-320-H2AD, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Thompson, John
Registered owner
Gordon L Thompson
Airworthiness certificate
Standard, Normal; Standard, Utility
Last inspection
Annual · February 17, 1990 · 78 hours before
Airport
1V5 · Boulder Municipal, runway 8, 4,100 × 75 ft, asphalt

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
20
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
78 total · 78 in this make and model · 27 as pilot in command · 64 in the last 90 days · 56 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
60° at 10 knots
Visibility
30 statute miles
Lowest ceiling
None
Temperature
77 °F, dew point 46 °F
Altimeter
29.00 inHg
Observed at
BJC, 9 nm away