# NTSB GAA17CA050: Cessna 305, N5075S, Llano, TX, October 21, 2016 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: October 21, 2016, 13:30 local (18:30 UTC) - Place: Llano, TX - Coordinates: 30.784999, -98.661941 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=30.7850&lon=-98.6619&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: 1 uninjured - Status: Completed, report December 15, 2016 - Report: Approved by Office Director - NTSB office: General Aviation Accidents - Parties: FAA - NTSB case key (mKey): 94315 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=GAA17CA050 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/94315/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=94315 - Page: https://openairdocs.org/ntsb/GAA17CA050 ## Probable cause The pilot's failure to maintain directional control during the landing roll in cross wind conditions. ## 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: [Cessna 305A, 19 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=2074002), [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md) - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Cessna 305A, 18 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=2074002), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [Wind: crosswind](https://openairdocs.org/ntsb-findings/03034040): Environmental issues › Conditions/weather/phenomena · Effect on operation; cases with it: [Cessna 305A, 6 cases](https://openairdocs.org/ntsb-findings/03034040/cases.md?model=2074002), [All aircraft, 1,008 cases](https://openairdocs.org/ntsb-findings/03034040/cases.md) - [Wind: crosswind](https://openairdocs.org/ntsb-findings/03034040): Environmental issues › Conditions/weather/phenomena · Ability to respond/compensate; cases with it: [Cessna 305A, 6 cases](https://openairdocs.org/ntsb-findings/03034040/cases.md?model=2074002), [All aircraft, 1,008 cases](https://openairdocs.org/ntsb-findings/03034040/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: [Cessna 305A, 22 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=2074002), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) - [Landing-landing roll: Runway excursion](https://openairdocs.org/ntsb-events/300); cases with it: [Cessna 305A, 12 cases](https://openairdocs.org/ntsb-events/300/sequence.md?model=2074002), [All aircraft, 3,643 cases](https://openairdocs.org/ntsb-events/300/sequence.md) - [Landing-landing roll: Dragged wing/rotor/float/other](https://openairdocs.org/ntsb-events/093); cases with it: [Cessna 305A, 2 cases](https://openairdocs.org/ntsb-events/093/sequence.md?model=2074002), [All aircraft, 319 cases](https://openairdocs.org/ntsb-events/093/sequence.md) ## Analysis The pilot of the tailwheel equipped airplane reported that during the landing roll in cross wind conditions, he was unable to maintain control of the airplane. The pilot further reported that the airplane veered to the left and exited the runway. The airplane sustained substantial damage to the right aileron and right elevator. The pilot reported that there were no pre impact mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation. The pilot landed runway 17, and reported the wind as 110 degrees true, 10 nautical miles per hour (knots), with gusts 15-20 knots. A review of local weather from an automated weather observation station located on the airfield, showed that at the time of the accident the wind was reported as 080 degrees true at 6 knots. ## Factual narrative The pilot of the tailwheel equipped airplane reported that during the landing roll in cross wind conditions, he was unable to maintain control of the airplane. The pilot further reported that the airplane veered to the left and exited the runway. The airplane sustained substantial damage to the right aileron and right elevator. The pilot reported that there were no pre impact mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation. The pilot landed runway 17, and reported the wind as 110 degrees true, 10 nautical miles per hour (knots), with gusts 15-20 knots. A review of local weather from an automated weather observation station located on the airfield, showed that at the time of the accident the wind was reported as 080 degrees true at 6 knots. ## Aircraft - Registration: [N5075S](https://openairdocs.org/aircraft/N5075S), registered now, S/N 21529, built 1951 (OpenAirDocs) - Reported make and model: CESSNA 305 (A) - Registry model: [Cessna 305A](https://openairdocs.org/model/cessna-305a) (registry code 2074002) (OpenAirDocs) - Registry engine: [Continental O-470 series](https://openairdocs.org/engine/continental-o-470-series) (registry code 17026, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 21529 - Year built: 1951 - Engines: CONT MOTOR O-470 SERIES reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Standard, Normal; Standard, Utility - Last inspection: Annual, October 19, 2016 - Departed: RYW, LAGO VISTA, TX - Destination: JCT, JUNCTION, TX - Airport: AQO, Llano Muni, runway 17, 4,202 × 75 ft, asphalt - Equipment: None ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 64; injuries: none; commercial; airplane ratings: single-engine land, single-engine sea, multi-engine land; instrument ratings: airplane; medical: class 2, with waivers/limitations; last flight review November 27, 2012; seat: front; restraint: 4-point; flight hours: 628.7 total, 11 in this make and model, 396.2 as pilot in command, 7 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 80° at 6 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 73 °F, dew point 43 °F - Altimeter: 30.29 inHg - Observed at: KAQO ## 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 20161021016899A](https://openairdocs.org/incident/20161021016899A), Oct 21, 2016: Cessna 305A, Llano, TX, Substantial damage. Pilot ground looped the airplane during landing(phase of flight). Pilot stated that when he was in rollout and deccelerating a gust of wind from left to right… ## Docket (2 files) The files NTSB released with the investigation on November 29, 2016, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=94315. 1.7 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 863 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40446808&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Master.PDF - Accident Photos (Courtesy of FAA) (item 2, .PDF, 2 photos, 820 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40446809&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.