# NTSB GAA16CA215: Cessna 172, N5700R, Boise, ID, May 1, 2016 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: May 1, 2016, 17:00 local (23:00 UTC) - Place: Boise, ID - Coordinates: 43.564445, -116.219444 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=43.5644&lon=-116.2194&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 June 15, 2016 - Report: Approved by Office Director - NTSB office: General Aviation Accidents - Parties: FAA - NTSB case key (mKey): 93101 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=GAA16CA215 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/93101/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=93101 - Page: https://openairdocs.org/ntsb/GAA16CA215 ## Probable cause The pilot's decision to land with a quartering tailwind and failure to maintain directional control during the landing roll, which resulted in a runway excursion and ground loop. ## 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: [Cessna 172F, 12 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=2072414), [All aircraft, 9,308 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [Info processing/decision: decision making/judgment](https://openairdocs.org/ntsb-findings/02041520): Personnel issues › Action/decision · Pilot (probable cause); cases with it: [Cessna 172F, 8 cases](https://openairdocs.org/ntsb-findings/02041520/cases.md?model=2072414), [All aircraft, 3,100 cases](https://openairdocs.org/ntsb-findings/02041520/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: [Cessna 172F, 6 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=2072414), [All aircraft, 3,969 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md) - [Wind: tailwind](https://openairdocs.org/ntsb-findings/03034015): Environmental issues › Conditions/weather/phenomena · Ability to respond/compensate; cases with it: [Cessna 172F, 1 case](https://openairdocs.org/ntsb-findings/03034015/cases.md?model=2072414), [All aircraft, 594 cases](https://openairdocs.org/ntsb-findings/03034015/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Landing-flare/touchdown: Other weather encounter](https://openairdocs.org/ntsb-events/400); cases with it: [Cessna 172F, 2 cases](https://openairdocs.org/ntsb-events/400/sequence.md?model=2072414), [All aircraft, 1,130 cases](https://openairdocs.org/ntsb-events/400/sequence.md) - [Landing-landing roll: Loss of control on ground](https://openairdocs.org/ntsb-events/230) (defining event); cases with it: [Cessna 172F, 7 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=2072414), [All aircraft, 4,590 cases](https://openairdocs.org/ntsb-events/230/sequence.md) - [Landing-landing roll: Runway excursion](https://openairdocs.org/ntsb-events/300); cases with it: [Cessna 172F, 7 cases](https://openairdocs.org/ntsb-events/300/sequence.md?model=2072414), [All aircraft, 3,656 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: [Cessna 172F, 22 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=2072414), [All aircraft, 10,152 cases](https://openairdocs.org/ntsb-events/470/sequence.md) ## Analysis The pilot reported that during the landing flare he encountered a left quartering tailwind and the airplane started to drift to the right. The pilot further reported that during the landing roll the airplane veered to the left off the runway and ground looped. The right elevator was substantially damaged. The pilot did not report any mechanical malfunctions or failures with the airplane that would have precluded normal operation. ## Factual narrative The pilot reported that during the landing flare he encountered a left quartering tailwind and the airplane started to drift to the right. The pilot further reported that during the landing roll the airplane veered to the left off the runway and ground looped. The right elevator was substantially damaged. The pilot did not report any mechanical malfunctions or failures with the airplane that would have precluded normal operation. ## Aircraft - Registration: [N5700R](https://openairdocs.org/aircraft/N5700R), registered now, S/N 17253350, built 1965 (OpenAirDocs) - Reported make and model: CESSNA 172 (F) - Registry model: [Cessna 172F](https://openairdocs.org/model/cessna-172f) (registry code 2072414) (OpenAirDocs) - Registry engine: [Continental 0-300 series](https://openairdocs.org/engine/continental-0-300-series) (registry code 17022, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 17253350 - Year built: 1965 - Airframe hours: 4981.8 - Engines: Lycoming O-360-A3A 180 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Standard, Normal - Last inspection: Annual, February 2, 2016 - Departed: BOI, Boise, ID - Destination: BOI, Boise, ID - Airport: BOI, Boise Air Terminal/Gowen Fld, runway 10R, 9,763 × 150 ft, asphalt - Equipment: Handheld GPS ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 27; injuries: none; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 3, without waivers/limitations; last flight review August 10, 2015; seat: left; restraint: 4-point; flight hours: 288.5 total, 8.3 in this make and model, 238.8 as pilot in command, 7.6 in the last 90 days, 6 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: 290° at 7 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 70 °F, dew point 37 °F - Altimeter: 30.04 inHg - Observed at: KBOI ## 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 20160501004499A](https://openairdocs.org/incident/20160501004499A), May 1, 2016: Cessna 172F, Boise, ID, Substantial damage. The pilot was in the pattern and cleared to land on 10R at Gowen Field. The Boise tower announced they would be switching to the runways 28 due to the winds… ## Other investigations on N5700R (1) 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. - [NTSB CHI71DGA10](https://openairdocs.org/ntsb/CHI71DGA10), Sep 13, 1970: Cessna 172 (N5700R), Ashland, KY, substantial damage ## Docket (2 files) The files NTSB released with the investigation on June 1, 2016, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=93101. 2.5 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 672 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40440769&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Master.PDF - Accident Photos (Courtesy of FAA) (item 2, .PDF, 2 photos, 1.8 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40440770&FileExtension=.PDF&FileName=Accident%20Photos%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.