DEN02LA023

NTSB accident investigation · Beech V35B · American Fork, UT · January 28, 2002

Accident · FatalLimited investigationFinal report
Date
January 28, 2002, 08:47 local (15:47 UTC)
Place
American Fork, UT
Injuries
1 fatal
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
N1176TBeech V35B
Weather
Instrument (IMC) · Day
Status
Completed · report July 25, 2002
Report
Approved by Office Director
Parties
FAA Flight Standards District Office
FAA report
20020128002259A
Case key
54127

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 poor judgment in that he intentionally initiated VFR flight into instrument meteorological conditions. Contributing factors were low ceiling and obscuration, and the pilot's lack of recent instrument time.

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 terrain/waterManeuvering
Vfr flight into imc - intentionalPilot in commandCause
Judgment - poorPilot in commandCause
Lack of recent instrument timePilot in commandFactor
Weather condition - low ceilingFactor
Weather condition - obscurationFactor
Terrain condition - high terrain

Analysis

The pilot told the lineman he was preparing to depart since he had to get back to work. The lineman thought "nobody in their right mind would try flying at that time [since] there was a winter storm moving through the area." It was as though they were '"in the eye of a hurricane,'" and be couldn't believe the pilot would try taking off in the storm. The pilot said he was going to "scud run" to his intended destination, about 103 miles to the south, but would turn around if he couldn't make it. The lineman said, "I couldn't believe what he was telling me. I told him that every year, we get two or three airplanes trying to scud run, and they run into the mountains." The pilot told him that he was instrument rated, but was not current. The lineman showed the pilot computer radar images depicting large buildups throughout the area. As the pilot prepared to depart, another lineman brushed frost off the wings. The pilot took off before all the frost could be removed and disappeared into clouds a mile south of the airport. The wreckage was located the following day in a canyon. Radar data showed the airplane tracking along an interstate highway before turning left and entering the canyon. As it went further east into the canyon, it made four consecutive climbing left turns before radar contact was lost.

Factual narrative

On January 28, 2002, at 0847 mountain standard time, a Beech V35B, N1176T, impacted mountainous terrain while maneuvering near American Fork, Utah. The commercial pilot, the sole occupant aboard, was fatally injured. Instrument meteorological conditions prevailed, and no flight plan had been filed for the personal flight being conducted under Title 14 CFR Part 91. The flight originated from Salt Lake Municipal Airport 2 in West Jordan, Utah, approximately 0830, and was en route to Delta, Utah.

The following is based on the lineman's written statement as to the conversation he had with the pilot prior to his departure from Salt Lake Municipal 2 Airport. The pilot told the lineman he was "'going down south today.'" The lineman thought the pilot was referring to a future trip because "nobody in their right mind...would trying flying out of our airport at that time [since] there was a winter storm moving through the area." The lineman briefed the pilot on the restrictions currently in effect due to the ongoing Winter Olympics, and asked him "'when would he be flying up?'" The pilot told him he was departing that day and was having his airplane refueled as they spoke. Having looked outside at the weather conditions, the lineman said it was as though they were "in the eye of a hurricane, and [I] couldn't believe [the pilot] would try taking off in the storm..." When asked, the pilot said he had not received a weather briefing, but that "he was going to try to 'scud run' down to Delta, about 103 miles to the south. The lineman said he "couldn't believe what he was telling me. I told him that every year, we get two or three airplanes trying to scud run, and they run into the mountains..." The lineman asked the pilot if he was instrument rated, and he said he was, but he was "not current."

The lineman took the pilot into their briefing room and showed him the radar images on the weather computer. "It showed large build ups all over the area. I discussed with him how bad the icing would be in the area. The pilot asked how high the [cloud] tops were, and was told he would have to contact Cedar City [Utah] FSS [Flight Service Station] for that information. The pilot said he "might do that." The lineman said he again tried to discourage the pilot from leaving. The pilot then paid his fuel bill. The lineman asked him why he needed to leave and was told he had to "get to work." The lineman replied that "was a stupid reason to go flying off in this [weather]." The pilot said "he would try to make it and that if it got bad, he would come back."

The pilot got in the airplane as another lineman brushed frost off the wing. He "seemed to be neglecting every sign of danger. He didn't even get the frost off the wing before he left." After several attempts, the pilot started the engine and taxied to runway 16. Both linemen watched the airplane take off and disappear into the clouds about a mile south of the airport.

On January 28, 2002, at 1700, the Cedar City FSS issued an ALNOT (Alert Notice) for the missing airplane. It was cancelled on January 29, 2002, at 1441, when the wreckage was located at the 6,600-foot level of American Fork Canyon, on the north side of State Highway 92, on a south-facing cliff. The geographical coordinates were 40 degrees, 47'58" north latitude, and 111 degrees, 43'13" west longitude.

NTAP (National Track Analysis Program) radar data was retrieved from the Salt Lake City Air Route Traffic Control Center (ARTCC) and analyzed by Denver's ARTCC Quality Assurance Division. The data, in ASCII format, was loaded into Tactical Mapping software. Aircraft position was depicted using latitude/longitude plots in time sequence, and aircraft speed was determined by mathematical calculation of distance traveled.

According to this data, the airplane was first detected at 0835:59, when it was at 5,600 feet msl (above mean sea level), just past the Utah State Penitentiary. It tracked southeast along Interstate Highway 15, past Lehi, and out to the shore of Lake Provo. It then turned left, crossed over the town of American Fork, and entered American Fork Canyon. As it went further east into the canyon, it made four consecutive left 360 degree turns: at 0842:08, when it was at 7,300 feet; at 0843:4, when it climbed from 7,300 feet to about 8,500 feet; at 0845:22, when it was at 9,200 feet; and at 0846:18, when it was at 9,400 feet. The airplane continued to climb to 10,000 feet, at which time radar contact was lost at 0847:27.

An autopsy of the pilot was performed by the Utah State Medical Examiner's Office on January 30, 2002. A toxicology screen was performed by FAA's Civil Aeromedical Institute (CAMI). According to CAMI's report, 169.096 (ug/ml, ug/g) Salicylate, a compound found in over-the-counter aspirin, was detected in the urine.

Weather conditions at Provo, Utah, located 17 miles south southeast of the accident site, were as follows: Wind, 130 degrees at 7 knots; visibility, 10 statue miles; sky condition, 1,200 feet scattered; ceiling, 1,600 feet broken, 2,300 feet broken; temperature, 1 degree C.; dew point, -2 degrees C.; altimeter, 29.71.

Aircraft

Registration
N1176T
Reported as
Beech V35B
Category
Airplane
Serial number
D-9921
Engine
Continental IO-520-BA, 285 horsepower, reciprocating
Damage
Destroyed
Flight
Business · Part 91
Registered owner
Alan N. Timmerman
Airworthiness certificate
Standard, Normal
Departed
U42 · West Jordan, UT
Destination
DTA · Delta, UT

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
60
Injuries
Fatal
Certificates
Commercial, Private
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Toxicology
Performed
Flight hours
3,100 total · 475 in this make and model · 25 in the last 30 days

Weather

Conditions
Instrument (IMC) · Day
Wind
130° at 7 knots
Visibility
10 statute miles
Lowest ceiling
1,600 ft broken
Temperature
34 °F, dew point 28 °F
Altimeter
29.70 inHg
Observed at
PVU, 17 nm away

Docket · 4

The files NTSB released with the investigation on July 3, 2002, on NTSB’s docket system: statements, records, photos and specialists’ reports. 634 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.