# NTSB CEN10CA232: Hoac-Austria HK 36R Super Dimona, N400HK, Highland, IL, April 28, 2010 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: April 28, 2010, 16:10 local (21:10 UTC) - Place: Highland, IL - Coordinates: 38.779167, -89.64083 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=38.7792&lon=-89.6408&mi=10 - Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping) - Defining event: [Takeoff-rejected takeoff: Collision during takeoff/land](https://openairdocs.org/ntsb-events/490) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report May 19, 2011 - Report: Approved by Office Director - NTSB office: Central Region - Parties: Federal Aviation Administration - NTSB case key (mKey): 75902 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN10CA232 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/75902/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=75902 - Page: https://openairdocs.org/ntsb/CEN10CA232 ## Probable cause The pilot's inadequate preflight planning and his delayed aborted takeoff. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Planning/preparation: performance calculations](https://openairdocs.org/ntsb-findings/02061010): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Hoac-Austria HK 36R SUPER DIMONA, 1 case](https://openairdocs.org/ntsb-findings/02061010/cases.md?model=4170002), [All aircraft, 114 cases](https://openairdocs.org/ntsb-findings/02061010/cases.md) - [Action: delayed action](https://openairdocs.org/ntsb-findings/02041025): Personnel issues › Action/decision · Pilot (probable cause); cases with it: [Hoac-Austria HK 36R SUPER DIMONA, 1 case](https://openairdocs.org/ntsb-findings/02041025/cases.md?model=4170002), [All aircraft, 894 cases](https://openairdocs.org/ntsb-findings/02041025/cases.md) - [Experience/qualifications: qualification/certification](https://openairdocs.org/ntsb-findings/02031010): Personnel issues › Experience/knowledge · Pilot; cases with it: [Hoac-Austria HK 36R SUPER DIMONA, 1 case](https://openairdocs.org/ntsb-findings/02031010/cases.md?model=4170002), [All aircraft, 280 cases](https://openairdocs.org/ntsb-findings/02031010/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Takeoff-rejected takeoff: Runway excursion](https://openairdocs.org/ntsb-events/300); cases with it: [Hoac-Austria HK 36R SUPER DIMONA, 1 case](https://openairdocs.org/ntsb-events/300/sequence.md?model=4170002), [All aircraft, 3,643 cases](https://openairdocs.org/ntsb-events/300/sequence.md) - [Takeoff-rejected takeoff: Collision during takeoff/land](https://openairdocs.org/ntsb-events/490) (defining event); cases with it: [Hoac-Austria HK 36R SUPER DIMONA, 1 case](https://openairdocs.org/ntsb-events/490/sequence.md?model=4170002), [All aircraft, 1,309 cases](https://openairdocs.org/ntsb-events/490/sequence.md) ## Analysis The pilot was attempting a takeoff when the powered glider's acceleration seemed slower than normal. The pilot attributed the slower acceleration to the soft turf of the runway. He stated that the glider was unable to attain takeoff speed and that he made his decision to abort the takeoff too late. The glider then overran the runway and ground-looped when it hit a ditch. The glider sustained substantial damage, which included structural damage to the fuselage in the areas between the cabin and empennage and the left landing gear strut. The pilot and passenger were uninjured. The pilot's last flight review was not current and was reported as having been last completed on September 6, 2008. ## Factual narrative The pilot was attempting a takeoff on runway 18 (2,692 by 200 feet, turf) when the powered glider's acceleration "seemed" slower than normal. The pilot attributed the slower acceleration to the soft turf of the runway. The pilot stated that the glider was unable to attain takeoff speed, and the decision to abort the takeoff was made too late. The glider then overran the runway and ground looped when it hit a ditch. The glider sustained substantial damage, which included structural damage to the fuselage in the areas between the cabin and empennage and the left landing gear strut. The pilot and passenger were uninjured. The pilot's last flight review was not current and was reported as having been last completed on September 6, 2008. ## Aircraft - Registration: [N400HK](https://openairdocs.org/aircraft/N400HK), registered now, S/N 36.400, built 1994 (OpenAirDocs) - Reported make and model: Hoac-Austria HK 36R Super Dimona - Registry model: [Hoac-Austria HK 36R SUPER DIMONA](https://openairdocs.org/model/hoac-austria-hk-36r-super-dimona) (registry code 4170002) (OpenAirDocs) - Registry engine: [Bombardier ROTAX (ALL)](https://openairdocs.org/engine/bombardier-rotax-all) (registry code 09050, reciprocating) (OpenAirDocs) - Category: Glider - Serial number: 36400 - Airframe hours: 1504 - Engines: Rotax 912 80 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Pilot - Registered owner: Howard Burhanna III / Gene Franklin - Airworthiness certificate: Standard, Normal - Last inspection: Annual, September 14, 2009 - Departed: H07, Highland, IL - Destination: St. Jacob, IL - Airport: H07, Highland-Winet Airport, runway 18, 2,692 × 200 ft, grass/turf ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 67; injuries: none; commercial, flight instructor; airplane ratings: single-engine land; last flight review September 6, 2008; seat: left; flight hours: 1,223 total, 95 in this make and model ## Weather - Conditions: Visual (VMC), Day - Wind: 160° at 8 knots - Visibility: 10 statute miles - Lowest ceiling: 7,000 ft broken - Temperature: 68 °F, dew point 46 °F - Altimeter: 29.89 inHg - Observed at: BLV, 17 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 20100428031719A](https://openairdocs.org/incident/20100428031719A), Apr 28, 2010: Hoac-Austri HK36R, Highland, IL, Substantial damage. While aborting an attempted takeoff, the glider ground looped. The airport has a turf runway. The pilot stated that the ground was soft and the grass was long… ## Other investigations on N400HK (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 CEN12CA363](https://openairdocs.org/ntsb/CEN12CA363), Jun 6, 2012: Hoac-Austria HK 36R Super Dimona (N400HK), New Douglas, IL, substantial damage. Probable cause: The pilot’s improper landing flare and inadequate recovery from a bounced landing. ## Docket (2 files) The files NTSB released with the investigation on March 15, 2011, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=75902. 567 KB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 497 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40330462&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Master.PDF - Weather (item 2, .PDF, 69 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40330463&FileExtension=.PDF&FileName=Weather-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.