# NTSB GAA16CA391: Diamond Aircraft Ind HK 36, N526TC, Blanchester, OH, July 20, 2016 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: July 20, 2016, 16:00 local (20:00 UTC) - Place: Blanchester, OH - Coordinates: 39.206665, -84.018333 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=39.2067&lon=-84.0183&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 December 5, 2016 - Report: Approved by Office Director - NTSB office: General Aviation Accidents - Parties: FAA - NTSB case key (mKey): 93686 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=GAA16CA391 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/93686/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=93686 - Page: https://openairdocs.org/ntsb/GAA16CA391 ## Probable cause The pilot's failure to maintain directional control of the powered glider during the landing roll. ## 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: [Diamond Aircraft Ind HK 36 TC, 1 case](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=05606TJ), [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: [Diamond Aircraft Ind HK 36 TC, 1 case](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=05606TJ), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [Object/animal/substance](https://openairdocs.org/ntsb-findings/03022000): Environmental issues › Physical environment · Contributed to outcome; cases with it: [Diamond Aircraft Ind HK 36 TC, 1 case](https://openairdocs.org/ntsb-findings/03022000/cases.md?model=05606TJ), [All aircraft, 224 cases](https://openairdocs.org/ntsb-findings/03022000/cases.md) - [Terrain: sloped/uneven terrain](https://openairdocs.org/ntsb-findings/03021017): Environmental issues › Physical environment · Contributed to outcome; cases with it: [Diamond Aircraft Ind HK 36 TC, 1 case](https://openairdocs.org/ntsb-findings/03021017/cases.md?model=05606TJ), [All aircraft, 270 cases](https://openairdocs.org/ntsb-findings/03021017/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: [Diamond Aircraft Ind HK 36 TC, 1 case](https://openairdocs.org/ntsb-events/230/sequence.md?model=05606TJ), [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: [Diamond Aircraft Ind HK 36 TC, 1 case](https://openairdocs.org/ntsb-events/300/sequence.md?model=05606TJ), [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: [Diamond Aircraft Ind HK 36 TC, 1 case](https://openairdocs.org/ntsb-events/470/sequence.md?model=05606TJ), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) ## Analysis The pilot of a powered glider reported that during the landing roll on a narrow grass airstrip, the glider veered to the left of centerline. He attempted to correct for the veer with right rudder input, but was unsuccessful. The left main landing gear traveled over a slope in the runway [crown for drainage purposes] and the left wing impacted corn stalks. The glider spun to the left and slid down the drainage area into the corn field. The glider sustained substantial damage to the fuselage. The pilot reported no preaccident mechanical malfunctions or failures with the powered glider that would have precluded normal operation. ## Factual narrative The pilot of a powered glider reported that during the landing roll on a narrow grass airstrip, the glider veered to the left of centerline. He attempted to correct for the veer with right rudder input, but was unsuccessful. The left main landing gear traveled over a slope in the runway [crown for drainage purposes] and the left wing impacted corn stalks. The glider spun to the left and slid down the drainage area into the corn field. The glider sustained substantial damage to the fuselage. The pilot reported no preaccident mechanical malfunctions or failures with the powered glider that would have precluded normal operation. ## Aircraft - Registration: [N526TC](https://openairdocs.org/aircraft/N526TC), registered now, S/N 36626, built 1998 (OpenAirDocs) - Reported make and model: DIAMOND AIRCRAFT IND GMBH HK 36 (TC) - Registry model: [Diamond Aircraft Ind HK 36 TC](https://openairdocs.org/model/diamond-aircraft-ind-hk-36-tc) (registry code 05606TJ) (OpenAirDocs) - Registry engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999) (OpenAirDocs) - Category: Glider - Serial number: 36626 - Year built: 1998 - Airframe hours: 2390 - Engines: Rotax 912A3 80 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Eastern Cincinnati Aviation Inc. - Registered owner: Eastern Cincinnati Aviation Inc. - Airworthiness certificate: Standard, Normal - Last inspection: Annual, March 25, 2016 - Departed: I69, BATAVIA, OH - Destination: N/A, Blanchester, OH - Airport: N/A, Private grass strip, runway 30, 3,000 × 100 ft, grass/turf - Equipment: None ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 71; injuries: none; private; last flight review November 19, 2011; seat: left; restraint: 4-point; flight hours: 135.1 total - Flight instructor; age 41; injuries: none; airline transport; airplane ratings: multi-engine land, single-engine land, single-engine sea; instrument ratings: airplane; medical: class 1, without waivers/limitations; seat: right; restraint: 4-point ## Weather - Conditions: Visual (VMC), Day - Wind: 100° at 4 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 86 °F, dew point 63 °F - Altimeter: 30.20 inHg - Observed at: KILN, 16 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 20160720013699A](https://openairdocs.org/incident/20160720013699A), Jul 20, 2016: Diamond Aircraft Ind Gmbh HK 36 TC, Blanchester, OH, Substantial damage. Upon landing rollout on private grass runway, the pilot lost control of aircraft and veered left striking corn on left side of runway. This caused the airplane… ## Docket (3 files) The files NTSB released with the investigation on October 27, 2016, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=93686. 2.4 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 2.2 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40445843&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Master.PDF - Flight Instructor Statement (item 2, .PDF, 100 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40445844&FileExtension=.PDF&FileName=Flight%20Instructor%20Statement-Master.PDF - Accident Photo (item 3, .PDF, 96 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40445845&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.