FTW95LA025

NTSB accident investigation · Cessna 172H · Tres Piedras, NM · October 22, 1994

Accident · Minor injuriesLimited investigationFinal report
Date
October 22, 1994, 15:25 local (21:25 UTC)
Place
Tres Piedras, NM
Injuries
2 minor, 2 uninjured
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
N2721LCessna 172H
Weather
Visual (VMC) · Day
Status
Completed · report October 13, 1995
Report
Approved by Office Director
FAA report
19941022035279A
Case key
19288

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 inadequate inflight planning which led to maneuvering at slow airspeed to avoid terrain which resulted in further loss of airspeed and an aerodynamic stall.

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
In-flight planning/decision - inadequatePilot in commandCause
Airspeed(vs) - not maintainedPilot in commandCause
Stall - inadvertentPilot in command
In flight collision with objectDescent - uncontrolled
Object - tree(s)
In flight collision with terrain/waterDescent - uncontrolled

Analysis

During a cross country flight the aircraft was required to clear 10,000 foot mountains. As the pilot began his climb he realized the aircraft could not clear the ridge line so he attempted to turn the aircraft 180 degrees. During the turn to the left he noticed the airspeed had dropped from 80 - 90 knots to 60 knots, and the GPS was indicating a 'slow ground speed.' He also recalled hearing the stall warning horn and the aircraft's nose dipping. The aircraft struck several trees and descended out of control to ground impact.

Factual narrative

On October 22, 1994, approximately 1525 mountain daylight time, a Cessna 172H, N2721L, was destroyed when it collided with trees near Tres Piedras, New Mexico. The airplane, owned and operated by the private pilot, was on a personal cross country flight. There was no flight plan filed and visual meteorological conditions prevailed. The pilot and the three passengers received minor injuries.

According to the pilot, in an interview conducted by a Federal Aviation Administration (FAA) inspector, after refueling in Raton, New Mexico, he was en route to Durango, Colorado, via the pass between Raton and Taos, New Mexico. In the initial FAA interview and subsequent interviews with the state police the pilot stated that the "terrain in the pass out climbed the performance of the airplane" and he attempted a 180 degree turn to the left at 80 - 90 knots in order to "return to lower terrain." The pilot stated that during the turn the aircraft's airspeed was "60 knots" on the airspeed indicator, and the GPS indicated a "slow ground speed." He further reported that he heard the sound of the "stall warning horn." The pilot also recalled that after he heard the stall warning horn, the "nose pitched down to the low wing," the left wing. During the uncontrolled descent the airplane clipped aspen trees and then collided with the ground. The accident site elevation was approximately 10,560 feet MSL.

Aircraft

Registration
N2721L
Reported as
Cessna 172H
Category
Airplane
Serial number
17255921
Engine
Continental O-300-D, 145 horsepower, reciprocating
Damage
Destroyed
Fire
Unknown
Flight
Personal · Part 91
Operator
Macwherter, George W., doing business as Two One Lima, Inc.
Registered owner
Two One Lima Inc.
Airworthiness certificate
Standard, Normal
Departed
RTN · Raton, NM
Destination
DRO · Durango, 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
69
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
1,500 total

Weather

Conditions
Visual (VMC) · Day
Visibility
10 statute miles
Lowest ceiling
None

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 N2721L · 1

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