# NTSB DEN02LA094: Collette RV6, N835YC, Nephi, UT, August 11, 2002 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: August 11, 2002, 17:45 local (23:45 UTC) - Place: Nephi, UT - Coordinates: 39.680664, -111.829643 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=39.6807&lon=-111.8296&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report April 18, 2003 - Report: Approved by Office Director - Parties: Salt Lake City FSDO - NTSB case key (mKey): 55484 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN02LA094 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/55484/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=55484 - Page: https://openairdocs.org/ntsb/DEN02LA094 ## Probable cause The pilot's failure to maintain aircraft control during landing roll, resulting in his attempt to go-around and an inadvertent stall/mush. A contributing factor was the lack of suitable terrain for a forced landing. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of control - on ground/water, landing - roll - aircraft control - not maintained, pilot in command (cause) - ground loop/swerve - encountered, pilot in command - go-around - initiated, pilot in command - terrain condition - runway - In flight collision with terrain/water, go-around (vfr) - airspeed(vr) - not attained, pilot in command - stall/mush - inadvertent, pilot in command (cause) - terrain condition - none suitable (contributing factor) ## Analysis According to the pilot, while landing on runway 16 and after touch down on the centerline, the airplane veered to the left. He corrected with right rudder control input and brought the airplane back to the centerline. The left wing tip dipped and struck the runway causing the airplane to veer to the left a second time. He added full power, right rudder and aileron and attempted a go-around. The airplane departed the left side of the runway and became airborne for a moment, but the controls felt "sluggish," and the airplane would not climb. He continued over some farm equipment, a road, a fence and he set up for a forced landing in a field. The airplane sustained substantial damage to the right wing spar and both main landing gear attachment points. The reported winds were 330 degrees at 10 knots. ## Factual narrative On August 11, 2002, at approximately 1745 mountain daylight time, a Collette RV6 homebuilt airplane, N835YC, operated by the pilot, was substantially damaged when it impacted terrain during an attempted go-around at Nephi Municipal Airport (U14), Nephi, Utah. The private pilot, the sole occupant on board, was not injured. Visual meteorological conditions prevailed. No flight plan had been filed for this personal local flight being conducted under Title 14 CFR Part 91. The flight originated at approximately 1730. According to the pilot, while landing on runway 16 and after touch down on the centerline, the airplane veered to the left. He corrected with right rudder control input and brought the airplane back to the centerline. The left wing tip dipped and struck the runway causing the airplane to veer to the left a second time. He added full power, right rudder and aileron and attempted a go-around. The airplane departed the left side of the runway and became airborne for a moment, but the controls felt "sluggish," and the airplane would not climb. He continued over some farm equipment, a road, a fence and he set up for a forced landing in a field. The airplane sustained substantial damage to the right wing spar and both main landing gear attachment points. At 1735, the reported weather conditions at Provo Municipal Airport (PVU), Provo, Utah, (approximately 30 nautical miles and at 350 degrees from the accident site) was wind, 330 degrees at 10 knots; visibility, 10 statute miles; sky condition, clear; temperature, 34 degrees C.; dew point, 02 degrees C.; altimeter setting, 29.97. ## Aircraft - Registration: [N835YC](https://openairdocs.org/deregistered/N835YC-2003-04-02), registration cancelled 2003-04-02, S/N 23835, built 1998 (OpenAirDocs) - Reported make and model: Collette RV6 - Registry model: [Collette Ronald L RV6](https://openairdocs.org/model/collette-ronald-l-rv6) (registry code 05604J5) (OpenAirDocs) - Registry engine: [Lycoming 0-360-A1D](https://openairdocs.org/engine/lycoming-0-360-a1d) (registry code 41504, reciprocating) (OpenAirDocs) - Category: Airplane, amateur-built - Serial number: 23835 - Airframe hours: 539 - Engines: Lycoming AIA 180 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Ronald Collette - Last inspection: Continuous airworthiness, August 2, 2002, 10 hours before - Departed: U14, Nephi, UT - Destination: U14, Nephi, UT - Airport: U14, Nephi Municipal, runway 16, 4,700 × 75 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 64; injuries: none; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 3, valid medical--w/ waivers/lim; last flight review July 7, 2002; seat: left; flight hours: 1,563 total, 685 in this make and model, 1,563 as pilot in command ## Weather - Conditions: Visual (VMC), Day - Wind: 330° at 10 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 93 °F, dew point 37 °F - Altimeter: 29.96 inHg - Observed at: PVU, 30 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 20020811024369A](https://openairdocs.org/incident/20020811024369A), Aug 11, 2002: Amtr RV6, Nephi, UT, Substantial damage. (-23) Pilot reported that he was landing into the wind at the Nephi, Utah airport. Upon landing it appeared that braking was applied unevenly resulting in… ## Docket (3 files) The files NTSB released with the investigation on February 25, 2003, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=55484. 380 KB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 303 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40469775&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Master.PDF - Maps or Charts of Accident Area, Wreckage Diagrams (item 2, .PDF, 49 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40173712&FileExtension=.PDF&FileName=Maps%20or%20Charts%20of%20Accident%20Area,%20Wreckage%20Diagrams-Master.PDF - Weather Reports and Records (item 3, .PDF, 28 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40173714&FileExtension=.PDF&FileName=Weather%20Reports%20and%20Records-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.