# NTSB GAA17CA471: Champion 7ACA, N1227G, Nampa, ID, August 5, 2017 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: August 5, 2017, 10:00 local (16:00 UTC) - Place: Nampa, ID - Coordinates: 43.581943, -116.524444 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=43.5819&lon=-116.5244&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing: Loss of control on ground](https://openairdocs.org/ntsb-events/230) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report March 27, 2018 - Report: Approved by Office Director - NTSB office: General Aviation Accidents - Parties: FAA - NTSB case key (mKey): 95753 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=GAA17CA471 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/95753/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=95753 - Page: https://openairdocs.org/ntsb/GAA17CA471 ## Probable cause The pilot’s failure to maintain directional control during the landing roll and the flight instructor’s use of excessive braking, which led to a nose-over. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Champion 7AC, 4 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=21101MA), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [Use of equip/info: use of equip/system](https://openairdocs.org/ntsb-findings/02063015): Personnel issues › Task performance · Instructor/check pilot (probable cause); cases with it: [Champion 7AC, 2 cases](https://openairdocs.org/ntsb-findings/02063015/cases.md?model=21101MA), [All aircraft, 1,391 cases](https://openairdocs.org/ntsb-findings/02063015/cases.md) - [Performance/control parameters: directional control](https://openairdocs.org/ntsb-findings/01062020): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Champion 7AC, 3 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=21101MA), [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md) - [Performance/control parameters: surface speed/braking](https://openairdocs.org/ntsb-findings/01062045): Aircraft › Aircraft oper/perf/capability · Incorrect use/operation (probable cause); cases with it: [Champion 7AC, 1 case](https://openairdocs.org/ntsb-findings/01062045/cases.md?model=21101MA), [All aircraft, 238 cases](https://openairdocs.org/ntsb-findings/01062045/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Landing: Loss of control on ground](https://openairdocs.org/ntsb-events/230) (defining event); cases with it: [Champion 7AC, 4 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=21101MA), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) - [Landing: Runway excursion](https://openairdocs.org/ntsb-events/300); cases with it: [Champion 7AC, 2 cases](https://openairdocs.org/ntsb-events/300/sequence.md?model=21101MA), [All aircraft, 3,643 cases](https://openairdocs.org/ntsb-events/300/sequence.md) - [Landing: Nose over/nose down](https://openairdocs.org/ntsb-events/096); cases with it: [Champion 7AC, 2 cases](https://openairdocs.org/ntsb-events/096/sequence.md?model=21101MA), [All aircraft, 2,287 cases](https://openairdocs.org/ntsb-events/096/sequence.md) ## Analysis The pilot of a tailwheel-equipped airplane reported that he and the flight instructor were conducting touch-and-go landings as part of a flight review. During the eighth landing, the airplane veered to the right, the flight instructor applied the brakes, and the airplane nosed down. The empennage sustained substantial damage. The pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation. ## Factual narrative The pilot of a tailwheel-equipped airplane reported that he and a flight instructor where doing touch-and-go landings as part of a flight review. During the eighth landing, the airplane veered to the right, the flight instructor applied the brakes, and the airplane nosed down. The empennage sustained substantial damage. The pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation. ## Aircraft - Registration: [N1227G](https://openairdocs.org/deregistered/N1227G-2018-11-21), registration cancelled 2018-11-21, S/N 7AC-4921 (OpenAirDocs) - Reported make and model: CHAMPION 7ACA - Registry model: [Champion 7AC](https://openairdocs.org/model/champion-7ac) (registry code 21101MA) (OpenAirDocs) - Category: Airplane - Serial number: 7AC-4921 - Engines: Lycoming 100 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: William Snethen - Registered owner: T-Craft Aero Club Inc - Airworthiness certificate: Standard, Normal - Departed: MAN, Nampa, ID - Destination: MAN, Nampa, ID - Airport: MAN, Nampa Muni, runway 29, 5,000 × 75 ft, asphalt - Equipment: Unknown ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 75; injuries: none; commercial, airline transport; airplane ratings: single-engine land, multi-engine land, single-engine sea, multi-engine sea; instrument ratings: airplane; medical: class 3, with waivers/limitations; last flight review December 27, 2010; seat: front; flight hours: 14,900 total, 14,300 as pilot in command - Check pilot; age 71; injuries: none; commercial, flight instructor; airplane ratings: multi-engine land, single-engine sea, single-engine land; instrument ratings: airplane; medical: class 2, with waivers/limitations; seat: rear ## Weather - Conditions: Visual (VMC), Day - Wind: 330° at 6 knots - Visibility: 8 statute miles - Lowest ceiling: none - Temperature: 75 °F, dew point 37 °F - Altimeter: 29.90 inHg - Observed at: KMAN ## 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 20170805010319A](https://openairdocs.org/incident/20170805010319A), Aug 5, 2017: Champion 7AC, Nampa, ID, Substantial damage. This accident occurred during a flight training event. The first pilot (PIC seated in the back seat) was exercising the privileges of his flight instructor… ## Docket (2 files) The files NTSB released with the investigation on March 1, 2018, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=95753. 1.4 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 951 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40460502&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Master.PDF - Accident Photo (Courtesy of FAA) (item 2, .PDF, 1 photo, 405 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40460503&FileExtension=.PDF&FileName=Accident%20Photo%20(Courtesy%20of%20FAA)-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.