# NTSB GAA15CA121: Cessna P210N, N86SB, Bozeman, MT, June 13, 2015 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: June 13, 2015, 15:00 local (21:00 UTC) - Place: Bozeman, MT - Coordinates: 45, -111 - Nearby events: https://openairdocs.org/map.md?lat=45.0000&lon=-111.0000&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing: Landing gear not configured](https://openairdocs.org/ntsb-events/095) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report July 27, 2015 - Report: Approved by Office Director - NTSB office: General Aviation Accidents - Parties: Federal Aviation Administration - NTSB case key (mKey): 91367 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=GAA15CA121 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/91367/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=91367 - Page: https://openairdocs.org/ntsb/GAA15CA121 ## Probable cause The pilot's failure to complete the required before landing checks, resulting in the execution of a gear up landing causing substantial damage to the lower fuselage of the airplane. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Use of equip/info: use of checklist](https://openairdocs.org/ntsb-findings/02063030): Personnel issues › Task performance · Pilot (probable cause); cases with it: [All aircraft, 336 cases](https://openairdocs.org/ntsb-findings/02063030/cases.md) - [Landing gear system: gear extension and retract sys](https://openairdocs.org/ntsb-findings/01023230): Aircraft › Aircraft systems · Not used/operated (probable cause); cases with it: [All aircraft, 416 cases](https://openairdocs.org/ntsb-findings/01023230/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Landing: Landing gear not configured](https://openairdocs.org/ntsb-events/095) (defining event); cases with it: [All aircraft, 584 cases](https://openairdocs.org/ntsb-events/095/sequence.md) - [Landing: Abnormal runway contact](https://openairdocs.org/ntsb-events/090); cases with it: [All aircraft, 1,506 cases](https://openairdocs.org/ntsb-events/090/sequence.md) ## Analysis The pilot of the retractable landing gear airplane reported he became preoccupied while in the traffic pattern and did not configure his landing gear to the down and locked position. The pilot landed the airplane with the landing gear stowed, resulting in substantial damage to the fuselage. The pilot reported no mechanical malfunctions or failures with the airplane prior to flight that would have precluded normal operation. ## Factual narrative The pilot of the retractable landing gear airplane reported he became preoccupied while in the traffic pattern and did not configure his landing gear to the down and locked position. The pilot landed the airplane with the landing gear stowed, resulting in substantial damage to the fuselage. The pilot reported no mechanical malfunctions or failures with the airplane prior to flight that would have precluded normal operation. ## Aircraft - Registration: N86SB (not matched to a registry record) - Reported make and model: CESSNA P210N (N) - Category: Airplane - Serial number: P21000829 - Year built: 1983 - Airframe hours: 2185.1 - Engines: Continental TSIO-520AF 310 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Stephen H. Biggs - Registered owner: Stephen H. Biggs - Airworthiness certificate: Standard, Normal - Last inspection: Annual, January 12, 2015, 4 hours before - Departed: KBZN, Bozeman, MT - Destination: KBZN, Bozeman, MT - Airport: KBZN, Bozeman Yellowstone Internatio, runway 12, 8,994 × 150 ft, asphalt - Equipment: Electronic flight bag or handheld device, Angle of attack indicator, Electronic multifunction display, Electronic primary flight display, Onboard weather, ADS-B, Stall warning system, Satellite tracking device ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 70; injuries: none; commercial, private; airplane ratings: single-engine sea, multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, with waivers/limitations; last flight review March 19, 2015; seat: left; restraint: 3-point; flight hours: 3,594 total, 1,022 in this make and model, 4 in the last 90 days, 1 in the last 30 days, 1 in the last 24 hours - Pilot; age 70; injuries: none; private, commercial; airplane ratings: multi-engine land, single-engine land, single-engine sea; instrument ratings: airplane; medical: class 2, with waivers/limitations; last flight review March 19, 2015; seat: left; restraint: 3-point; flight hours: 3,594 total, 1,022 in this make and model, 4 in the last 90 days, 1 in the last 30 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 320° at 6 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 70 °F, dew point 41 °F - Altimeter: 29.88 inHg - Turbulence: Light - Observed at: KBZN ## 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 20150613008169A](https://openairdocs.org/incident/20150613008169A), Jun 13, 2015: Cessna P210N, Bozeman, MT, Substantial damage. Pilot in command, sole occupant, failed to lower the landing gear for landing. ## Docket (4 files) The files NTSB released with the investigation on July 10, 2015, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=91367. 2.1 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 1.9 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40428990&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Redacted.PDF - Memorandum For Record METAR KBZM (1500 MDT) (item 2, .PDF, 102 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40428991&FileExtension=.PDF&FileName=Memorandum%20For%20Record%20METAR%20KBZM%20(1500%20MDT)-Master.PDF - Photograph 1: Airplane Fuselage (Courtesy of FAA) (item 3, .PDF, 75 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40428992&FileExtension=.PDF&FileName=Photograph%201%3A%20Airplane%20Fuselage%20(Courtesy%20of%20FAA)-Master.PDF - Photograph 2: Airplane Fuselage Frame (Courtesy of FAA) (item 4, .PDF, 74 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40428993&FileExtension=.PDF&FileName=Photograph%202%3A%20Airplane%20Fuselage%20Frame%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.