# NTSB CEN11LA373: Mooney M20R, N5816P, Lake In The Hills, IL, June 4, 2011 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: June 4, 2011, 10:30 local (15:30 UTC) - Place: Lake In The Hills, IL - Coordinates: 42.206943, -88.323059 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=42.2069&lon=-88.3231&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing-flare/touchdown: Aerodynamic stall/spin](https://openairdocs.org/ntsb-events/241) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report February 6, 2012 - Report: Approved by Office Director - NTSB office: Central Region - Parties: Federal Aviation Administration - DuPage FSDO - NTSB case key (mKey): 79309 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN11LA373 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/79309/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=79309 - Page: https://openairdocs.org/ntsb/CEN11LA373 ## Probable cause The pilot's improper landing flare and recovery from a bounced landing, which resulted in a loss of control. Contributing to the accident was the certified flight instructor’s inadequate supervision. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Performance/control parameters: landing flare](https://openairdocs.org/ntsb-findings/01062041): Aircraft › Aircraft oper/perf/capability · Incorrect use/operation (probable cause); cases with it: [Mooney M20R, 1 case](https://openairdocs.org/ntsb-findings/01062041/cases.md?model=5870225), [All aircraft, 1,285 cases](https://openairdocs.org/ntsb-findings/01062041/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: [Mooney M20R, 2 cases](https://openairdocs.org/ntsb-findings/01062010/cases.md?model=5870225), [All aircraft, 1,681 cases](https://openairdocs.org/ntsb-findings/01062010/cases.md) - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Mooney M20R, 9 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=5870225), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [Action: lack of action](https://openairdocs.org/ntsb-findings/02041030): Personnel issues › Action/decision · Instructor/check pilot (probable cause); cases with it: [Mooney M20R, 3 cases](https://openairdocs.org/ntsb-findings/02041030/cases.md?model=5870225), [All aircraft, 792 cases](https://openairdocs.org/ntsb-findings/02041030/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Landing: Simulated/training event](https://openairdocs.org/ntsb-events/600); cases with it: [Mooney M20R, 1 case](https://openairdocs.org/ntsb-events/600/sequence.md?model=5870225), [All aircraft, 173 cases](https://openairdocs.org/ntsb-events/600/sequence.md) - [Landing-flare/touchdown: Aerodynamic stall/spin](https://openairdocs.org/ntsb-events/241) (defining event); cases with it: [Mooney M20R, 3 cases](https://openairdocs.org/ntsb-events/241/sequence.md?model=5870225), [All aircraft, 1,529 cases](https://openairdocs.org/ntsb-events/241/sequence.md) - [Landing-flare/touchdown: Hard landing](https://openairdocs.org/ntsb-events/092); cases with it: [Mooney M20R, 3 cases](https://openairdocs.org/ntsb-events/092/sequence.md?model=5870225), [All aircraft, 2,102 cases](https://openairdocs.org/ntsb-events/092/sequence.md) - [Landing-aborted after touchdown: Runway excursion](https://openairdocs.org/ntsb-events/300); cases with it: [Mooney M20R, 4 cases](https://openairdocs.org/ntsb-events/300/sequence.md?model=5870225), [All aircraft, 3,643 cases](https://openairdocs.org/ntsb-events/300/sequence.md) - [Landing-aborted after touchdown: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [Mooney M20R, 11 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=5870225), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) ## Analysis **This report was modified on July 29, 2013. Please see the docket for this accident to view the original report.** The pilot had recently purchased the airplane and was receiving flight instruction to become more comfortable operating it. The accident occurred as the pilot performed a simulated forced landing at the end of an instructional flight. The pilot began the landing flare above the region of ground effect and unintentionally induced an aerodynamic stall after his abrupt aft control yoke input. He increased engine power in response to the stall condition, but the airplane landed hard on the main landing gear in a nose-high attitude. The airplane subsequently bounced and began to veer to the left. The pilot and flight instructor were unsuccessful in regaining control. The airplane departed the runway and went down an embankment into a construction site. The fuselage, firewall, and both wings were substantially damaged during the event. A postaccident examination did not reveal any preimpact mechanical malfunctions or failures that would have precluded normal operation of the airplane. ## Factual narrative **This report was modified on July 29, 2013. Please see the docket for this accident to view the original report.** On June 4, 2011, at 1030 central daylight time, a Mooney model M20R airplane, N5816P, was substantially damaged during a hard landing at Lake in the Hills Airport (3CK), Lake in the Hills, Illinois. The pilot and his flight instructor were not injured. The airplane was registered to and operated by the private pilot under the provisions of 14 Code of Federal Regulations Part 91. Day visual meteorological conditions prevailed for the flight, which was operated without a flight plan. The local instructional flight departed from Southern Wisconsin Regional Airport (KJVL), Janesville, Wisconsin, at 1015. The pilot reported that he was attempting a simulated forced landing when the accident occurred. The airplane bounced upon touchdown to which he responded by advancing engine power to initiate an aborted landing. He noted that he was unable to establish a climb as the airplane drifted left off the runway and down an embankment. He reported that after the bounced landing he relinquished control of the airplane to his flight instructor who was also unable to regain control of the airplane. The flight instructor reported that the pilot had recently purchased the accident airplane and was receiving flight instruction to become more comfortable operating the airplane. At the completion of the instructional flight, he asked the pilot to demonstrate a simulated forced landing to runway 26. As the airplane crossed midfield while on the downwind leg to the runway, the pilot reduced engine power to idle and established best glide airspeed as he maneuvered from base to final approach. The flight instructor reported that, after crossing the runway threshold, the pilot began the landing flare above the region of ground effect and unintentionally induced an aerodynamic stall after he "abruptly and quickly" pulled the control yoke aft. The pilot increased engine power in response to the stalled condition, but the airplane landed hard on the main landing gear in a nose-high attitude. The nose wheel subsequently struck the runway resulting in a porpoising effect. The flight instructor noted it was the hardest landing he had ever experienced. The airplane began to veer to the left due to the high engine power setting, but the flight crew's combined application of full right rudder was not successful in regaining directional control. As they unsuccessfully attempted to rotate the airplane for an aborted landing, the airplane departed the left side of the runway into a grassy area before proceeding down an embankment into a construction site. The fuselage, firewall, and both wings were substantially damaged during the event. A postaccident inspection did not reveal any preimpact mechanical malfunctions or failures that would have precluded normal operation of the airplane. The nearest aviation weather observation station with recorded historical weatherinformation was at DuPage Airport (KDPA), about 21.5 miles south of the accident site, which was equipped with an automated surface observing system (ASOS). At 1052, the KDPA ASOS reported the following weather conditions: wind 260 degrees at 8 knots, gusting 14 knots; visibility 8 miles; sky clear; temperature 31 degrees Celsius; dew point 21 degrees Celsius; altimeter setting 30.02 inches of mercury. ## Aircraft - Registration: [N5816P](https://openairdocs.org/aircraft/N5816P), registered now, S/N 29-0087, built 1996 (OpenAirDocs) - Reported make and model: Mooney M20R - Registry model: [Mooney M20R](https://openairdocs.org/model/mooney-m20r) (registry code 5870225) (OpenAirDocs) - Registry engine: [Continental IO-550 series](https://openairdocs.org/engine/continental-io-550-series) (registry code 17042, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 29-0087 - Airframe hours: 2075 - Engines: Continental IO-550-G5B 285 horsepower reciprocating - Damage: Substantial damage - Flight: Instructional, Part 91 - Airworthiness certificate: Standard, Normal - Last inspection: Annual, January 21, 2011 - Departed: KJVL, Janesville, WI - Destination: 3CK, Lake In The Hills, IL - Airport: 3CK, Lake in the Hills Airport, runway 26, 3,801 × 50 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 57; injuries: none; private; airplane ratings: single-engine land; medical: class 3, with waivers/limitations; last flight review January 24, 2011; seat: left; flight hours: 260 total, 41 in this make and model, 133 as pilot in command, 24 in the last 90 days, 9 in the last 30 days, 3 in the last 24 hours - Flight instructor; age 41; injuries: none; commercial, flight instructor; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, without waivers/limitations; last flight review May 1, 2011; seat: right; flight hours: 761 total, 648 in this make and model, 688 as pilot in command, 12 in the last 90 days, 6 in the last 30 days, 0 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 260° at 8 knots, gusting 14 - Visibility: 8 statute miles - Lowest ceiling: none - Temperature: 88 °F, dew point 70 °F - Altimeter: 30.02 inHg - Observed at: KDPA, 19 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 20110604011869A](https://openairdocs.org/incident/20110604011869A), Jun 4, 2011: Mooney M20R, Lake In The Hil, IL, Substantial damage. While simulating an engine out landing at 3CK, aircraft experienced a hard landing and possible propeller strike. In an attempt to recover, the aircraft veered… ## Docket (14 files) The files NTSB released with the investigation on December 14, 2011, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=79309. 22.4 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 318 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40359541&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Redacted.PDF - Pilot Statement (item 2, .PDF, 32 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40359542&FileExtension=.PDF&FileName=Pilot%20Statement-Redacted.PDF - Flight Instructor Statement (item 3, .PDF, 558 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40359543&FileExtension=.PDF&FileName=Flight%20Instructor%20Statement-Redacted.PDF - Witness Statement (item 4, .PDF, 22 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40359544&FileExtension=.PDF&FileName=Witness%20Statement-Master.PDF - FAA Inspector Statement, Vic Liberatore (item 5, .PDF, 69 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40359545&FileExtension=.PDF&FileName=FAA%20Inspector%20Statement,%20Vic%20Liberatore-Redacted.PDF - FAA Inspector Statement, Carolyn Remol (item 6, .PDF, 40 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40359546&FileExtension=.PDF&FileName=FAA%20Inspector%20Statement,%20Carolyn%20Remol-Redacted.PDF - Weather Reports (item 7, .PDF, 43 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40359547&FileExtension=.PDF&FileName=Weather%20Reports-Master.PDF - Petition for Reconsideration (item 8, .PDF, 7.1 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40398010&FileExtension=.PDF&FileName=Petition%20for%20Reconsideration-Master.PDF - Response to Petition for Reconsideration (item 9, .PDF, 6.9 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40398028&FileExtension=.PDF&FileName=Response%20to%20Petition%20for%20Reconsideration-Master.PDF - Original Factual Report (item 10, .PDF, 855 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40398029&FileExtension=.PDF&FileName=Original%20Factual%20Report-Master.PDF - Original Brief of Accident (item 11, .PDF, 753 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40398030&FileExtension=.PDF&FileName=Original%20Brief%20of%20Accident-Master.PDF - Revised Factual Report (item 12, .PDF, 4.2 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40398031&FileExtension=.PDF&FileName=Revised%20Factual%20Report-Master.PDF - Revised Brief of Accident (item 13, .PDF, 1.4 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40398032&FileExtension=.PDF&FileName=Revised%20Brief%20of%20Accident-Master.PDF - Changes to Factual Report and Brief of Accident (item 14, .PDF, 79 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40398033&FileExtension=.PDF&FileName=Changes%20to%20Factual%20Report%20and%20Brief%20of%20Accident-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.