DEN02LA086

NTSB accident investigation · Cessna 172N · Fort Collins, CO · July 31, 2002

Accident · No injuriesLimited investigationFinal report
Date
July 31, 2002, 16:15 local (22:15 UTC)
Place
Fort Collins, CO
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N5088KCessna 172N
Weather
Visual (VMC) · Day
Status
Completed · report December 6, 2002
Report
Approved by Office Director
Parties
FAA FSDO
FAA report
20020731021389A
Case key
55390

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 student pilot's failure to maintain aircraft control and subsequent inadvertent stall/mush into terrain during a soft field take off. Contributing factors include the pilot's lack of experience and the high density altitude conditions.

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 flightTakeoff - initial climb
Aircraft control - not maintainedPilot in commandCause
Stall/mush - encounteredPilot in commandCause
Lack of experiencePilot in commandFactor
Soft field takeoff/procedure - inadequatePilot in commandCause
In flight collision with terrain/waterTakeoff - initial climb
Terrain condition - runway

Analysis

The student pilot had just finished practicing several soft field take offs and landings with an instructor and was on his first solo flight of the day. After taxing to the end of runway, he pulled the yoke back all the way, and added full power. Following rotation, the airplane came straight up in a 45-degree incline. At approximately 20 feet in the air, the airplane drifted off to the right of the runway, struck the ground with its left wing tip, bounced up and then it struck the ground a second time. The ground impact collapsed and sheered off the nose landing gear, buckled the firewall, and bent the outboard 4 feet of the right wing spar.

Factual narrative

On July 31, 2002, at approximately 1615 mountain daylight time, a Cessna 172N, N5088K, was substantially damaged when it impacted terrain during take-off from Fort Collins Downtown Airport (3V5), Fort Collins Colorado. The student pilot, the sole occupant on board, was not injured. Visual meteorological conditions prevailed. No flight plan was filed for this local solo flight being conducted under Title 14 CFR Part 91. The flight was originating at the time of the accident.

According to the student pilot, he had finished practicing several soft field take offs and landings with an instructor and this was his first solo flight of the day. He taxied to the end of runway 11, "pulled the yoke back all the way, and added full power." Following rotation, the "nose came straight up and the plane was in a 45-degree incline." The airplane climbed to approximately 20 feet and stalled. The airplane drifted off to the right of the runway, struck the ground with its left wing tip, bounced up and then it struck the ground a second time. The ground impact collapsed and sheered off the nose landing gear, buckled the firewall, and bent the outboard 4 feet of the right wing spar.

The instructor, who was watching the take off from the ramp, stated that the nose of the airplane came up "as expected" but did not stop coming up, and the airplane "very quickly left the ground." When the nose was "at about 15 to 20 feet in the air, the plane veered to the right and then to the left in about a 90 degree left turn." After the accident occurred, the instructor examined the airplane and checked the trim and flap settings. He verified that they were "set for the correct positions for soft field takeoff."

At the time of the accident, the weather conditions were: wind, 150 degrees at 5 knots; visibility, 10 statute miles; temperature, 99 degrees Fahrenheit; dew point, 34 degrees Fahrenheit; and the altimeter setting was, 29.95. The airfield elevation is 4,939 feet msl, and the calculated density altitude was 8,682 feet msl.

Aircraft

Registration
N5088K
Reported as
Cessna 172N
Category
Airplane
Serial number
17273959
Airframe hours
8,547.1
Engine
Lycoming O-320, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
The Pilot Center
Registered owner
Jimandi LLC.
Airworthiness certificate
Standard, Normal
Last inspection
AAIP · July 18, 2002 · 27.5 hours before
Departed
3V5 · FT Collins, CO
Destination
3V5
Airport
3V5 · Fort Collins Downtown, runway 11, 5,300 × 48 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
Student pilot
Age
53
Injuries
None
Certificate
Student
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
96 total · 96 in this make and model · 13 as pilot in command · 53 in the last 90 days · 21 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
150° at 5 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
99 °F, dew point 34 °F
Altimeter
29.95 inHg
Observed at
KFNL, 8 nm away

Docket · 4

The files NTSB released with the investigation on October 29, 2002, on NTSB’s docket system: statements, records, photos and specialists’ reports. 530 KB in all.

FAA reports on this event · 1

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