# NTSB GAA17CA247: Grumman American Avn. AA, N9613L, Flushing, MI, March 28, 2017 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: March 28, 2017, 17:00 local (21:00 UTC) - Place: Flushing, MI - Coordinates: 43.053054, -83.803611 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=43.0531&lon=-83.8036&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing-landing roll: Runway excursion](https://openairdocs.org/ntsb-events/300) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report November 14, 2017 - Report: Approved by Office Director - NTSB office: General Aviation Accidents - Parties: FAA - NTSB case key (mKey): 95068 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=GAA17CA247 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/95068/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=95068 - Page: https://openairdocs.org/ntsb/GAA17CA247 ## Probable cause The pilot’s unstabilized approach and subsequent failure to attain the proper touchdown point, which resulted in a runway overrun. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Performance/control parameters: descent/approach/glide path](https://openairdocs.org/ntsb-findings/01062040): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Grumman American Avn. AA-1B, 2 cases](https://openairdocs.org/ntsb-findings/01062040/cases.md?model=3960103), [All aircraft, 809 cases](https://openairdocs.org/ntsb-findings/01062040/cases.md) - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Grumman American Avn. AA-1B, 3 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=3960103), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [Object/animal/substance: tree(s)](https://openairdocs.org/ntsb-findings/03022020): Environmental issues › Physical environment · Contributed to outcome; cases with it: [Grumman American Avn. AA-1B, 1 case](https://openairdocs.org/ntsb-findings/03022020/cases.md?model=3960103), [All aircraft, 933 cases](https://openairdocs.org/ntsb-findings/03022020/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: Runway excursion](https://openairdocs.org/ntsb-events/300) (defining event); cases with it: [Grumman American Avn. AA-1B, 3 cases](https://openairdocs.org/ntsb-events/300/sequence.md?model=3960103), [All aircraft, 3,643 cases](https://openairdocs.org/ntsb-events/300/sequence.md) - [Landing-landing roll: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [Grumman American Avn. AA-1B, 11 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=3960103), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) ## Analysis The pilot reported that, during the landing, he was "going…[too] fast," overran the runway, and impacted trees. The airplane sustained substantial damage to both wings. The pilot reported that there were no preimpact mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation. ## Factual narrative The pilot reported that, during the landing he was "going to[too] fast", over ran the runway, and impacted trees. The airplane sustained substantial damage to both wings. The pilot reported that there were no preimpact mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation. ## Aircraft - Registration: [N9613L](https://openairdocs.org/aircraft/N9613L), registered now, S/N AA1B0113, built 1973 (OpenAirDocs) - Reported make and model: GRUMMAN AMERICAN AVN. CORP. AA (1B) - Registry model: [Grumman American Avn. AA-1B](https://openairdocs.org/model/grumman-american-avn-aa-1b) (registry code 3960103) (OpenAirDocs) - Registry engine: [Lycoming 0-235 series](https://openairdocs.org/engine/lycoming-0-235-series) (registry code 41505, 4 cycle) (OpenAirDocs) - Category: Airplane - Serial number: AA1B0113 - Year built: 1973 - Airframe hours: 3426 - Engines: Lycoming O-320 B2B 160 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Standard, Normal - Last inspection: Annual, February 20, 2017 - Departed: Y47, NEW HUDSON, MI - Destination: 3DA, Flushing, MI - Airport: 3DA, Dalton, runway 18, 2,510 × 50 ft, asphalt - Equipment: Stall warning system, Auto-pilot, Handheld GPS ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 67; injuries: none; private; airplane ratings: single-engine land; medical: class 3, without waivers/limitations; last flight review April 16, 2015; seat: left; flight hours: 538.9 total, 271.8 in this make and model ## Weather - Conditions: Visual (VMC), Day - Wind: 360° at 11 knots - Visibility: 10 statute miles - Lowest ceiling: 2,300 ft broken - Temperature: 46 °F, dew point 36 °F - Altimeter: 30.12 inHg - Observed at: KFNT, 6 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 20170328003099A](https://openairdocs.org/incident/20170328003099A), Mar 28, 2017: Grumman American Avn. Corp. AA-1B, Flushing, MI, Substantial damage. Landed on runway 18 and could not stop prior to the end of runway, went into soft wet grass and impacted trees approximately 55 feet from the end of runway ## Docket (2 files) The files NTSB released with the investigation on October 13, 2017, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=95068. 1.1 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 861 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40457051&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Master.PDF - Accident Photo (item 2, .PDF, 267 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40457052&FileExtension=.PDF&FileName=Accident%20Photo-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.