# NTSB GAA19CA287: Jihlavan Airplanes Sro KP5, N235KP, East Haddam, CT, May 25, 2019 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: May 25, 2019, 10:00 local (14:00 UTC) - Place: East Haddam, CT - Coordinates: 41.446388, -72.457496 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=41.4464&lon=-72.4575&mi=10 - Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping) - Defining event: [Takeoff: Aerodynamic stall/spin](https://openairdocs.org/ntsb-events/241) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report April 13, 2020 - Report: Approved by Office Director - NTSB office: General Aviation Accidents - Parties: FAA - NTSB case key (mKey): 99505 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=GAA19CA287 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/99505/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=99505 - Page: https://openairdocs.org/ntsb/GAA19CA287 ## Probable cause The pilot's failure to maintain the proper airspeed and his exceedance of the airplane's critical angle of attack during takeoff, which resulted in an aerodynamic stall. ## 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: [Jihlavan Airplanes Sro KP5, 2 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=060001I), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [Performance/control parameters: angle of attack](https://openairdocs.org/ntsb-findings/01062042): Aircraft › Aircraft oper/perf/capability · Capability exceeded (probable cause); cases with it: [Jihlavan Airplanes Sro KP5, 1 case](https://openairdocs.org/ntsb-findings/01062042/cases.md?model=060001I), [All aircraft, 990 cases](https://openairdocs.org/ntsb-findings/01062042/cases.md) - [Performance/control parameters: airspeed](https://openairdocs.org/ntsb-findings/01062010): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Jihlavan Airplanes Sro KP5, 1 case](https://openairdocs.org/ntsb-findings/01062010/cases.md?model=060001I), [All aircraft, 1,681 cases](https://openairdocs.org/ntsb-findings/01062010/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Takeoff: Aerodynamic stall/spin](https://openairdocs.org/ntsb-events/241) (defining event); cases with it: [Jihlavan Airplanes Sro KP5, 1 case](https://openairdocs.org/ntsb-events/241/sequence.md?model=060001I), [All aircraft, 1,529 cases](https://openairdocs.org/ntsb-events/241/sequence.md) - [Takeoff: Attempted remediation/recovery](https://openairdocs.org/ntsb-events/060); cases with it: [Jihlavan Airplanes Sro KP5, 1 case](https://openairdocs.org/ntsb-events/060/sequence.md?model=060001I), [All aircraft, 1,422 cases](https://openairdocs.org/ntsb-events/060/sequence.md) - [Takeoff: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [Jihlavan Airplanes Sro KP5, 1 case](https://openairdocs.org/ntsb-events/470/sequence.md?model=060001I), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) - [Takeoff: Landing gear collapse](https://openairdocs.org/ntsb-events/094); cases with it: [Jihlavan Airplanes Sro KP5, 1 case](https://openairdocs.org/ntsb-events/094/sequence.md?model=060001I), [All aircraft, 1,787 cases](https://openairdocs.org/ntsb-events/094/sequence.md) ## Analysis The pilot receiving instruction reported that, during takeoff from the grass adjacent to a paved runway, after adding full power, he held the stick back during acceleration. He added that the airplane did not accelerate "much above the red line (40 mph)" and that he felt a "bump." The airplane then bounced and veered right. The flight instructor reported that, during the takeoff, the angle of attack was "higher than normal" and that the airplane aerodynamically stalled 3 ft above ground level. The right wing dropped, the airplane yawed right, and he and the pilot attempted to recover with nose-down, left-rudder, and left-aileron inputs. The airplane landed sideways, the landing gear collapsed, and the propeller struck the ground. The airplane sustained substantial damage to the right wing. The pilot and instructor reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. ## Factual narrative The pilot receiving instruction reported that, during takeoff on the grass adjacent to a paved runway, after adding full power, he held the stick back during acceleration. He added that, the airplane did not accelerate "much above the red line (40 mph)". He felt a "bump", the airplane bounced, and veered to the right. The pilot added left rudder to correct, but the landing gear collapsed, and the propeller struck the ground. The flight instructor reported that, during the takeoff, the angle of attack was "higher than normal" and the airplane aerodynamically stalled 3 ft above the ground. The right wing dropped, the airplane yawed to the right, and he and the pilot receiving instruction attempted to recover with nose down, left rudder, and left aileron input. The airplane landed sideways, the landing gear collapsed, and the propeller struck the ground. The airplane sustained substantial damage to the right wing. The pilot and flight instructor reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. The automated weather observation station, located about 4 miles southwest, reported that, about 5 minutes before the accident, the wind was from 290° at 5 knots. The pilot was departing runway 14. ## Aircraft - Registration: [N235KP](https://openairdocs.org/deregistered/N235KP-2022-07-02), registration cancelled 2022-07-02, S/N 5110128K (OpenAirDocs) - Reported make and model: JIHLAVAN AIRPLANES SRO KP5 - Registry model: [Jihlavan Airplanes Sro KP5](https://openairdocs.org/model/jihlavan-airplanes-sro-kp5) (registry code 060001I) (OpenAirDocs) - Category: Airplane - Serial number: 5110128K - Year built: 2005 - Airframe hours: 363.7 - Engines: Rotax 912ULS 100 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Special, Special light-sport (Special) - Last inspection: Annual, January 23, 2019 - Departed: SNC, Chester, CT - Destination: SNC, Chester, CT - Airport: 42B, Goodspeed, runway 14, 2,120 × 50 ft, grass/turf - Equipment: None ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 56; injuries: none; sport pilot; airplane ratings: single-engine land; medical: sport pilot; last flight review February 23, 2019; seat: left; restraint: 4-point; flight hours: 270 total, 99 in this make and model, 154 as pilot in command, 1 in the last 90 days, 1 in the last 30 days, 1 in the last 24 hours - Flight instructor; age 55; injuries: none; flight instructor, private; airplane ratings: single-engine land; medical: basicmed; last flight review October 23, 2018; seat: right; restraint: 4-point; flight hours: 845 total, 132 in this make and model, 798 as pilot in command, 19 in the last 90 days, 6 in the last 30 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 290° at 5 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 66 °F, dew point 48 °F - Altimeter: 30.21 inHg - Observed at: KSNC, 4 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 20190525005119A](https://openairdocs.org/incident/20190525005119A), May 25, 2019: Jihlavan Airplanes Sro KP5, East Haddam, CT, Substantial damage. May 25, 2019, instructor pilot and student pilot were conducting training on soft field take-offs (grass strip). The first two take-offs were conducted by the… ## Docket (2 files) The files NTSB released with the investigation on June 26, 2019, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=99505. 5.7 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 4.5 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40473797&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Master.PDF - Accident Photo (item 2, .PDF, 1 photo, 1.3 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40473798&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.