DEN08LA040

NTSB accident investigation · Garniss Stol 701 · Mesilla, NM · December 15, 2007

Accident · FatalLimited investigationFinal report
Date
December 15, 2007, 16:41 local (23:41 UTC)
Place
Mesilla, NM
Injuries
1 fatal
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
N45500Garniss Stol 701
Weather
Visual (VMC) · Day
Status
Completed · report May 28, 2008
Report
Approved by Office Director
Parties
FAA Flight Standards District Office
FAA report
20071215828909A
Case key
67280

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 NTSB’s determination of the probable cause, and any contributing factors.

The pilot's failure to maintain aircraft control during an intentional low altitude maneuver due to impairment, resulting in the in-flight collision with terrain.

Analysis

The pilot flew his recently-purchased airplane over his home on a "daily basis." Each time, he would "buzz" his house and "wig wag" his wings. On the afternoon of the accident, the airplane circled over a vacant field behind his house in a constant descending left turn. He began to rock his wings as he made a "lower than normal" pass. As the pilot rocked his wings, he "lost control" of the airplane. The left wing tip contacted the ground and the airplane cartwheeled. A toxicological screen performed by FAA's Civil Aeromedical Institute found Chlorpheniramine in the pilot's blood and urine. Since it could not be quantified, it could not be determined how much was in the pilot's body or how long he had taken the antihistamine before flying. According to the Regional Federal Air Surgeon, the drug is contraindicated because it may cause drowsiness.

Factual narrative

On December 15, 2007, at 1641 mountain standard time, a Garniss STOL 701, N45500, piloted by a sport pilot, was destroyed when it struck terrain while maneuvering near Mesilla, New Mexico. Visual meteorological conditions (VMC) prevailed at the time of the accident. The personal flight was being conducted under the provisions of Title 14 Code of Federal Regulations (CFR) Part 91 without a flight plan. The pilot was fatally injured. The local flight originated approximately 1600 from Las Cruces (LRU), New Mexico.

According to FAA inspectors, the pilot purchased the airplane approximately 2 months prior to the accident. His wife and daughters, who were witnesses to the accident, told the inspectors that the pilot flew over his home on a "daily basis." Each time, he would "buzz" his house and "wig wag" his wings. On the afternoon of the accident, they observed the airplane circling over a vacant field behind their house in a constant descending left turn. Other witnesses said the pilot began to rock his wings as he made a "lower than normal" pass. As the pilot wig wagged his wings, he "lost control" of the airplane. The left wing tip contacted the ground and the airplane cartwheeled. The accident site was approximately 100 yards east of 2031 Old Farm Road, and 350 feet west-southwest of the pilot's residence.

A toxicological screen performed by FAA's Civil Aeromedical Institute in Oklahoma City, Oklahoma, found Chlorpheniramine in the pilot's blood and urine. Since it could not be quantified, it could not be determined how much was in the pilot's body or how long he had taken the antihistamine before flying. According to the Regional Federal Air Surgeon, the drug is contraindicated because it may cause drowsiness.

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
Aircraft control - not maintainedPilot in commandCause
Use of inappropriate medication/drugPilot in command
Impairment(drugs)Pilot in commandCause
Low altitude flight/maneuver - intentionalPilot in commandCause
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - ground

Aircraft

Registration
N45500
Reported as
Garniss Stol 701
Category
Airplane, amateur-built
Serial number
7-4634
Engine
Rotax 912 ULS, 100 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Registered owner
Robert L. Steimmetz
Airworthiness certificate
Special, Experimental (Special)
Departed
LRU · Las Cruces, NM
Destination
LRU · Las Cruces, NM

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
54
Injuries
Fatal
Certificate
Sport Pilot
Airplane ratings
Single-engine land
Seat
Left
Toxicology
Performed

Weather

Conditions
Visual (VMC) · Day
Wind
20° at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
45 °F, dew point -2 °F
Altimeter
30.25 inHg
Observed at
LRU

FAA reports on this event · 1

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