# NTSB WPR15LA013: Beech H35, N647Q, Bountiful, UT, October 14, 2014 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: October 14, 2014, 16:00 local (22:00 UTC) - Place: Bountiful, UT - Coordinates: 40.869445, -111.927223 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=40.8694&lon=-111.9272&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing-landing roll: Loss of control on ground](https://openairdocs.org/ntsb-events/230) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report September 14, 2016 - Report: Approved by Office Director - NTSB office: Western Pacific Region - Parties: FAA FSDO - NTSB case key (mKey): 90251 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR15LA013 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/90251/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=90251 - Page: https://openairdocs.org/ntsb/WPR15LA013 ## Probable cause The pilot's loss of directional control during a tailwind landing. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Performance/control parameters: directional control](https://openairdocs.org/ntsb-findings/01062020): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Beech H35, 2 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=1151520), [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md) - [Wind: tailwind](https://openairdocs.org/ntsb-findings/03034015): Environmental issues › Conditions/weather/phenomena · Effect on operation (probable cause); cases with it: [Beech H35, 1 case](https://openairdocs.org/ntsb-findings/03034015/cases.md?model=1151520), [All aircraft, 594 cases](https://openairdocs.org/ntsb-findings/03034015/cases.md) - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Beech H35, 2 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=1151520), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [Performance/control parameters: surface speed/braking](https://openairdocs.org/ntsb-findings/01062045): Aircraft › Aircraft oper/perf/capability · Incorrect use/operation; cases with it: [Beech H35, 1 case](https://openairdocs.org/ntsb-findings/01062045/cases.md?model=1151520), [All aircraft, 238 cases](https://openairdocs.org/ntsb-findings/01062045/cases.md) - [Action: incorrect action performance](https://openairdocs.org/ntsb-findings/02041015): Personnel issues › Action/decision · Pilot; cases with it: [Beech H35, 2 cases](https://openairdocs.org/ntsb-findings/02041015/cases.md?model=1151520), [All aircraft, 1,386 cases](https://openairdocs.org/ntsb-findings/02041015/cases.md) - [Object/animal/substance: residence/building](https://openairdocs.org/ntsb-findings/03022022): Environmental issues › Physical environment · Contributed to outcome; cases with it: [Beech H35, 1 case](https://openairdocs.org/ntsb-findings/03022022/cases.md?model=1151520), [All aircraft, 58 cases](https://openairdocs.org/ntsb-findings/03022022/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Landing-landing roll: Loss of control on ground](https://openairdocs.org/ntsb-events/230) (defining event); cases with it: [Beech H35, 2 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=1151520), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) - [Landing-landing roll: Runway excursion](https://openairdocs.org/ntsb-events/300); cases with it: [Beech H35, 2 cases](https://openairdocs.org/ntsb-events/300/sequence.md?model=1151520), [All aircraft, 3,643 cases](https://openairdocs.org/ntsb-events/300/sequence.md) - [Landing-landing roll: Collision during takeoff/land](https://openairdocs.org/ntsb-events/490); cases with it: [Beech H35, 3 cases](https://openairdocs.org/ntsb-events/490/sequence.md?model=1151520), [All aircraft, 1,309 cases](https://openairdocs.org/ntsb-events/490/sequence.md) ## Analysis The airline transport pilot was conducting a personal cross-country flight. The pilot reported that, during the flight, the airplane experienced electrical power issues, which prevented him from extending the landing gear. He overflew the runway twice and manually extended the gear, and following touchdown, the airplane departed the runway surface and collided with a hangar. The airplane traveled about 482 ft before it exited the runway surface, and no skid marks or other indications of braking attempts were observed on the runway surface. Weather reports from a nearby airport indicated that a tailwind existed about the time of the landing. The tailwind resulted in a high groundspeed, which likely contributed to the pilot's loss of directional control. ## Factual narrative On October 14, 2014, about 1600 mountain daylight time, a Beech H35, N647Q, collided with a hangar after a runway excursion at Skypark Airport, Bountiful, Utah. The pilot/owner was operating the airplane under the provisions of 14 Code of Federal Regulations (CFR) Part 91. The airline transport pilot was not injured. The airplane sustained substantial damage during the accident sequence. The cross-country personal flight departed Alpine, Wyoming, about 1500 MDT, with a planned destination of Bountiful. Visual meteorological conditions (VMC) prevailed, and no flight plan had been filed.A Federal Aviation Administration (FAA) inspector examined the accident site, and interviewed the pilot. The pilot stated that during the return flight the airplane had electrical power issues, and he lowered the landing gear manually. He overflew the runway twice before landing on runway 34. The FAA inspector determined that the airplane touched down on centerline, and traveled 482 feet prior to exiting the runway surface. A visual examination of the 4,700-foot-long runway did not reveal any skid marks or other indications of braking attempts. After departing the runway, it struck a runway light with the landing gear. It continued approximately 3,000 feet through a grass median and across the taxiway, striking a sign, a gate post, and a hangar. There were no indications of braking throughout the runway excursion. No examination of the airframe was conducted. An automated surface weather observation at Salt Lake City International Airport (KSLC), Salt Lake City, Utah, (elevation 4,227 feet mean sea level, 5 miles southwest of the accident site) was issued 7 minutes before the accident. It indicated wind from 170 degrees at 4 knots, 10 miles or greater visibility, few clouds at 13,000 feet, temperature at 23 degrees C, dew point -1 degrees C, and an altimeter setting at 30.02 inches of mercury. The pilot failed to submit a pilot/operator aircraft accident report, NTSB Form 6120.1. ## Aircraft - Registration: [N647Q](https://openairdocs.org/deregistered/N647Q-2018-05-31), registration cancelled 2018-05-31, S/N D-5322, built 1957 (OpenAirDocs) - Reported make and model: BEECH H35 (NO SERIES) - Registry model: [Beech H35](https://openairdocs.org/model/beech-h35) (registry code 1151520) (OpenAirDocs) - Registry engine: [Continental O-470 series](https://openairdocs.org/engine/continental-o-470-series) (registry code 17026, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: D-5322 - Year built: 1957 - Engines: Continental Motors Inc. O-470 260 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Don Peterson - Registered owner: Don Peterson - Airworthiness certificate: Standard, Normal - Departed: Alpine, WY - Destination: BTF, Bountiful, UT - Airport: BTF, Bountiful Skypark, runway 34, 4,700 × 70 ft, asphalt - Equipment: Stall warning system ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 85; injuries: none; airline transport; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 3, without waivers/limitations; seat: left; flight hours: 37,414 total, 2,000 in this make and model ## Weather - Conditions: Visual (VMC), Day - Wind: 170° at 4 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 73 °F, dew point 30 °F - Altimeter: 30.02 inHg - Icing: Unknown - Turbulence: Unknown - Observed at: KSLC, 5 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 (OpenAirDocs). - [Accident 20141014019459A](https://openairdocs.org/incident/20141014019459A), Oct 14, 2014: Beech H35, Woodscross, UT, Substantial damage. On 10/15/2014,an accident investigation was conducted concerning a Beech H35 registration N647Q which occurred on 10/14/2014 at approximately 1600 MDT. This… ## Docket (1 files) The files NTSB released with the investigation on June 17, 2016, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=90251. 57 KB in all. - Record of Conversation FAA Inspector (item 1, .PDF, 57 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40441467&FileExtension=.PDF&FileName=Record%20of%20Conversation%20FAA%20Inspector-Master.PDF From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.