# NTSB CEN10CA366: Aviat A-1B, N80HY, Centennial, CO, July 2, 2010 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: July 2, 2010, 13:41 local (20:41 UTC) - Place: Centennial, CO - Coordinates: 39.570278, -104.849441 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=39.5703&lon=-104.8494&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: 2 uninjured - Status: Completed, report October 21, 2010 - Report: Approved by Office Director - NTSB office: Central Region - NTSB case key (mKey): 76514 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN10CA366 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/76514/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=76514 - Page: https://openairdocs.org/ntsb/CEN10CA366 ## Probable cause The student pilot's failure to maintain directional control and the certified flight instructor's delay in remedial action. ## 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: [Aviat A-1B, 21 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=2210406), [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md) - [Action: delayed action](https://openairdocs.org/ntsb-findings/02041025): Personnel issues › Action/decision · Instructor/check pilot (probable cause); cases with it: [Aviat A-1B, 2 cases](https://openairdocs.org/ntsb-findings/02041025/cases.md?model=2210406), [All aircraft, 894 cases](https://openairdocs.org/ntsb-findings/02041025/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: [Aviat A-1B, 24 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=2210406), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) - [Landing-landing roll: Attempted remediation/recovery](https://openairdocs.org/ntsb-events/060); cases with it: [Aviat A-1B, 4 cases](https://openairdocs.org/ntsb-events/060/sequence.md?model=2210406), [All aircraft, 1,422 cases](https://openairdocs.org/ntsb-events/060/sequence.md) - [Landing-landing roll: Runway excursion](https://openairdocs.org/ntsb-events/300); cases with it: [Aviat A-1B, 9 cases](https://openairdocs.org/ntsb-events/300/sequence.md?model=2210406), [All aircraft, 3,643 cases](https://openairdocs.org/ntsb-events/300/sequence.md) ## Analysis The certified flight instructor (CFI) and private pilot student were conducting tailwheel certification training. During the third flight of the day, after practicing 3-point landings, the student pilot was performing an additional 3-point landing after having just practiced main wheel landings. The CFI described the pattern and approach as being normal. During the roll out and while slowing the airplane down, it began to drift left. The CFI called for right rudder and the airplane began drifting right of centerline. After calling for left rudder the CFI attempted to regain control using rudder and power. The airplane entered a violent turn to the left, exited the runway, and flipped over going down an embankment. The right wing spar and horizontal stabilizer were bent. ## Factual narrative The certified flight instructor (CFI) and private pilot student were conducting tailwheel certification training. During the third flight of the day, after practicing 3-point landings, the student pilot was performing an additional 3-point landing after having just practiced main wheel landings. The CFI described the pattern and approach as being normal. During roll out and while slowing the airplane began to drift left. The CFI called for right rudder and the airplane began drifting right of centerline. After calling for left rudder the CFI attempted to regain control using rudder and power. The airplane entered a violent turn to the left, exited the runway, and flipped over going down an embankment. The right wing spar and horizontal stabilizer were bent. ## Aircraft - Registration: [N80HY](https://openairdocs.org/aircraft/N80HY), registered now, S/N 2288, built 2005 (OpenAirDocs) - Reported make and model: AVIAT AIRCRAFT INC A-1B - Registry model: [Aviat A-1B](https://openairdocs.org/model/aviat-a-1b) (registry code 2210406) (OpenAirDocs) - Registry engine: [Lycoming O-360 series](https://openairdocs.org/engine/lycoming-o-360-series) (registry code 41575, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 2288 - Airframe hours: 65 - Engines: LYCOMING O-360 SERIES 180 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Steven McFarland` - Registered owner: Steven McFarland` - Airworthiness certificate: Standard, Normal - Departed: APA, Centennial, CO - Destination: APA, Centennial, CO - Airport: APA, Centennial Airport, runway 35L, concrete ## Flight crew As NTSB recorded them. NTSB leaves out names. - Flight instructor; age 69; injuries: none; flight instructor, commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, with waivers/limitations; last flight review September 13, 2008; flight hours: 21,000 total, 300 in this make and model, 70 in the last 90 days, 21 in the last 30 days, 4 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: variable at 5 knots, gusting 8 - Lowest ceiling: none ## 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 20100702040289A](https://openairdocs.org/incident/20100702040289A), Jul 2, 2010: Aviat Aircr A-1B, Englewood, CO, Substantial damage. On July 2, 2010, at 1321 MDT, an Aviat A-1B, N80HY, sn 2288, registered to wzupdoc inc received substantial damage during landing at Centennial Airport (apa).… ## Docket (1 files) The files NTSB released with the investigation on August 2, 2010, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=76514. 534 KB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 534 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40333739&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Redacted.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.