# NTSB CEN11LA549: Aerosport Ikarus C42E, N577JP, East Troy, WI, August 4, 2011 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: August 4, 2011, 18:30 local (23:30 UTC) - Place: East Troy, WI - Coordinates: 42.797222, -88.372497 - Nearby events: https://openairdocs.org/map.md?lat=42.7972&lon=-88.3725&mi=10 - Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping) - Defining event: [Takeoff: Loss of control in flight](https://openairdocs.org/ntsb-events/240) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report February 27, 2013 - Report: Approved by Office Director - NTSB office: Central Region - Parties: FAA-Milwaukee FSDO - NTSB case key (mKey): 81398 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN11LA549 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/81398/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=81398 - Page: https://openairdocs.org/ntsb/CEN11LA549 ## Probable cause The flight instrctor's delayed remedial action during landing. Contributing to the accident was the student pilot’s loss of directional control when he became distracted with the open door. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Action: delayed action](https://openairdocs.org/ntsb-findings/02041025): Personnel issues › Action/decision · Instructor/check pilot (probable cause); cases with it: [Aerosport IKARUS C42E, 1 case](https://openairdocs.org/ntsb-findings/02041025/cases.md?model=05621Q7), [All aircraft, 894 cases](https://openairdocs.org/ntsb-findings/02041025/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: [Aerosport IKARUS C42E, 1 case](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=05621Q7), [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 · Student/instructed pilot (probable cause); cases with it: [Aerosport IKARUS C42E, 2 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=05621Q7), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Landing: Abnormal runway contact](https://openairdocs.org/ntsb-events/090); cases with it: [Aerosport IKARUS C42E, 1 case](https://openairdocs.org/ntsb-events/090/sequence.md?model=05621Q7), [All aircraft, 1,506 cases](https://openairdocs.org/ntsb-events/090/sequence.md) - [Takeoff: Loss of control in flight](https://openairdocs.org/ntsb-events/240) (defining event); cases with it: [Aerosport IKARUS C42E, 1 case](https://openairdocs.org/ntsb-events/240/sequence.md?model=05621Q7), [All aircraft, 5,002 cases](https://openairdocs.org/ntsb-events/240/sequence.md) - [Takeoff: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [Aerosport IKARUS C42E, 2 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=05621Q7), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) ## Analysis The student pilot reported that the accident landing was his fourth landing. He said that the landing was hard and the airplane bounced. He stated that he added power and about the same time, his door came open. He said that he initially ignored the door, but thought that the open door was causing the airplane to yaw to the left. He then tried to close the door, and the airplane veered off the left side of the runway and struck a ditch. The flight instructor reported no preimpact anomalies that would have precluded normal operation. ## Factual narrative On August 4, 2011, about 1830 central daylight time, an Aerosport Ikarus C42E, N577JP, landed hard and subsequently went off the left side of the runway and struck a ditch resulting in substantial damage. The airplane was landing on runway 8 at the East Troy Municipal Airport, East Troy, Wisconsin, when the accident occurred. The student pilot and the flight instructor were not injured. The airplane was registered to Tenerelli LLC, and operated as an instructional flight under the provisions of 14 Code of Federal Regulations Part 91. Visual flight rules (VFR) conditions prevailed for the flight, which was not operating on a flight plan. The local flight originated about 1750. The certificated flight instructor reported that the student pilot made a hard landing and the airplane bounced and became airborne again. He said that the student reached for the door and the airplane then yawed off the left side of the runway and impacted a ditch. The flight instructor listed no mechanical malfunctions of the airplane. The student pilot reported that the accident landing was his fourth landing. He said that the landing was hard and the airplane bounced. He stated that he added power and at about the same time, his door came open. He said that he initially ignored the door but felt that the open door was causing the airplane to yaw to the left. He then tried to close the door and the airplane went off of the runway. The student pilot listed "unknown" in regard to any mechanical malfunctions of the airplane. Examination of the airplane after the accident revealed propeller damage, separated left main landing gear, collapsed nose landing gear, a fractured main keel tube in the fuselage, and a bent fuselage. No preimpact anomalies were found. ## Aircraft - Registration: [N577JP](https://openairdocs.org/aircraft/N577JP), registered now, S/N 0605-6816, built 2006 (OpenAirDocs) - Reported make and model: AEROSPORT LTD IKARUS C42E - Registry model: [Aerosport IKARUS C42E](https://openairdocs.org/model/aerosport-ikarus-c42e) (registry code 05621Q7) (OpenAirDocs) - Registry engine: [Bombardier ROTAX (ALL)](https://openairdocs.org/engine/bombardier-rotax-all) (registry code 09050, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 0605-6816 - Airframe hours: 777 - Engines: BOMBARDIER 912 100 horsepower reciprocating - Damage: Substantial damage - Flight: Instructional, Part 91 - Operator: Scott Schuh - Registered owner: Tenerelli LLC - Airworthiness certificate: Special, Special light-sport (Special) - Last inspection: Annual, April 21, 2011 - Departed: 57C, East Troy, WI - Destination: 57C, East Troy, WI - Airport: 57C, East Troy Municipal Airport, runway 08, 3,900 × 75 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Flight instructor; age 41; injuries: none; commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, without waivers/limitations; last flight review November 23, 2011; seat: right; flight hours: 1,019 total, 21 in this make and model, 829 as pilot in command, 15 in the last 90 days, 13 in the last 30 days, 2 in the last 24 hours - Student pilot; age 44; injuries: none; medical: sport pilot; seat: left; flight hours: 28 total, 28 in this make and model, 13 in the last 90 days, 7 in the last 30 days, 0 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 100° at 8 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 73 °F, dew point 61 °F - Altimeter: 29.96 inHg - Observed at: BUU, 8 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 20110804016799A](https://openairdocs.org/incident/20110804016799A), Aug 4, 2011: Aerosport Ltd IKARUS C42E, East Troy, WI, Substantial damage. On the 4th touch and go of an instructional flight, student experienced a hard landing. Door popped open, and student lost focus and attempted to close door.… ## Docket (3 files) The files NTSB released with the investigation on January 30, 2013, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=81398. 6.7 MB in all. - CFI - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 5.8 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40385636&FileExtension=.PDF&FileName=CFI%20-%20Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Redacted.PDF - Student - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 2, .PDF, 796 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40385639&FileExtension=.PDF&FileName=Student%20-%20Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Redacted.PDF - Record of conversation with FAA inspector (item 3, .PDF, 62 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40385640&FileExtension=.PDF&FileName=Record%20of%20conversation%20with%20FAA%20inspector-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.