FTW96FA012

NTSB accident investigation · Cessna 172RG · Bayfield, CO · October 10, 1995

Accident · FatalField investigationFinal report
Date
October 10, 1995, 07:40 local (13:40 UTC)
Place
Bayfield, CO
Injuries
3 fatal
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
N4834VCessna 172RG
Weather
Visual (VMC) · Day
Status
Completed · report February 14, 1996
Report
Approved by Office Director
FAA report
19951010031979A
Case key
19601

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 maintain adequate terrain clearance. A factor was the pilot diverting attention while looking for game.

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.

In flight collision with objectManeuvering
Weather condition - high density altitude
Clearance - not maintainedPilot in commandCause
Diverted attentionPilot in commandFactor
Object - tree(s)

Analysis

The two passengers had chartered the airplane and pilot to go look for elk in the mountains. The pilot of another airplane, also searching for elk, spotted the burning wreckage in the carbonate basin, about 1/2 mile south of miller mountain, at the 11,130-FT level. He reported encountering smooth flying conditions at the time. The top 5 feet of a pine tree was found severed and its branches were found at the base of the tree along with pieces of plexiglass and the airplane's pitot tube. Another tree, 63 feet away, had its top bent over, the airplane was located 135 feet away on the side of the mountain. The leading edges of both wings bore accordion-type compression damage. The calculated rate of climb capability, at the computed density altitude of 10,720 feet, was 340 feet per minute.

Factual narrative

History of flight

On October 10, 1995, approximately 0740 mountain daylight time (MDT), a Cessna 172RG, N4834V, was destroyed when it impacted terrain while maneuvering near Bayfield, Colorado. The airplane, owned and operated by Durango Air Service, Inc., was being operated as an air taxi under Title 14 CFR Part 135. The pilot and two passengers were fatally injured. Visual meteorological conditions prevailed at the time, and no flight plan was filed. The flight originated at Durango, Colorado, approximately 0630 MDT.

The two passengers, outfitters who regularly conducted business with the operator, chartered the airplane and pilot to go look for elk in the mountains. The pilot of another airplane, also looking for elk, spotted the burning airplane wreckage in the Carbonate Basin, about 1/2-mile south of Miller Mountain, at the 11,130 foot level. He reported encountering smooth flying conditions at the time he found the wreckage.

Personnel information

According to his military logbook, the pilot came to the United States in December 1991 as a Danish Air Force cadet and began basic flight training at Sheppard Air Force Base, Texas, in the T-37 and, later, the T-38. His advanced flight training was completed in October 1993 in the F-16A/B. The pilot began civilian flight training at Durango Air Service in February 1995.

He was issued a private pilot certificate on April 13, 1995, a commercial certificate with instrument and multiengine ratings on June 12, 1995, and a flight instructor rating on August 2, 1995.

Wreckage and impact information

The top 5 feet of a pine tree was severed and its branches were found at the base of the tree along with pieces of plexiglass and the airplane's pitot tube. Another tree, with its top bent over, stood 63 feet away. The airplane was located 135 feet away on the side of the mountain. The magnetic heading from the severed tree top to the airplane was 248 degrees. The airplane rested upright on a magnetic heading of 075 degrees. In front of the airplane was an 18 inch deep crater. Extending from the crater on a heading of 023 degrees was a ground scar. At the end of this scar were pieces of a red lens.

The leading edges of both wings bore accordion type compression and fire damage. The cabin area was gutted. Control continuity was established from all flight control surfaces to the cabin area. Both propeller blades exhibited 90 degree chordwise scratch marks on the cambered surfaces.

Medical and pathological information

Autopsy (report #MMH-CA-100-95) and toxicological protocols were performed on the pilot by Dr. Michael J. Benziger at the Montrose, Colorado, Memorial Hospital. Toxicological protocol was also conducted by FAA's Civil Aeromedical Institute in Oklahoma City, Oklahoma. Toxicological findings were negative.

Tests and research

Pressure altitude at the accident site was computed to be 10,720 feet and the temperature, using the standard adiabatic lapse rate, was estimated at 21 degrees F. Density altitude was computed to be approximately 10,720 feet. Calculated rate of climb capability was 340 feet per minute. According to the Cessna 172RG Pilot's Operating Handbook, the airplane's service ceiling is 16,800 feet.

Additional information

A Durango Air Service spokesperson stated that even though money was exchanged for services rendered, it was the company's position that the flight hade been conducted under Title 14 CFR Part 91 (General Operating and Flight Rules), and was exempted from Part 135 (Air Taxi Operators and Commercial Operators) because the flight originated and was to terminate at the same airport and was conducted within a 25 statute mile radius of that airport. The exemption that the spokesperson referred to is contained in FAR (Federal Aviation Regulations) 135.1(b)(2), which states, in part, "...this part does not apply to nonstop sightseeing flights that begin and end at the same airport, and are conducted within a 25 statute mile radius of that airport."

According to FAA's Flight Standards District Office in Salt Lake City, Utah, Durango Air Service holds an Air Carrier Operating Certificate, CMIA900C, but N4834V was not on the list of approved aircraft. Additionally, the pilot was qualified to serve in an air taxi capacity only as second-in-command in multiengine airplanes, his flight check having been given on July 11, 1995.

The wreckage was released to the operator's representative on October 12, 1995. Parties to the investigation included the Federal Aviation Administration and the Cessna Aircraft Company.

Aircraft

Registration
N4834V
Reported as
Cessna 172RG
Category
Airplane
Serial number
172RG0395
Airframe hours
5,662
Engine
Lycoming O-360-F1A6, 180 horsepower, reciprocating
Damage
Destroyed
Fire
On-Ground
Flight
Part 135
Registered owner
Durango Air Service, Inc.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · September 1, 1995 · 37 hours before
Departed
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
24
Certificate
Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Left
Toxicology
Performed
Flight hours
724 total · 33 in this make and model · 150 as pilot in command · 153 in the last 90 days · 69 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
50° at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
30 °F, dew point 18 °F
Altimeter
30.00 inHg
Observed at
DRO, 18 nm away

FAA reports on this event · 1

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