# NTSB CEN10LA145: Hawker Beechcraft A36, N1114X, Milwaukee, WI, March 6, 2010 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: March 6, 2010, 14:15 local (20:15 UTC) - Place: Milwaukee, WI - Coordinates: 43.110279, -88.034446 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=43.1103&lon=-88.0344&mi=10 - Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping) - Defining event: [Takeoff: Landing gear collapse](https://openairdocs.org/ntsb-events/094) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report July 1, 2010 - Report: Approved by Office Director - NTSB office: Central Region - Parties: Hawker Beechcraft Corporation, Federal Aviation Administration - NTSB case key (mKey): 75463 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN10LA145 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/75463/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=75463 - Page: https://openairdocs.org/ntsb/CEN10LA145 ## Probable cause The pilot's retraction of the landing gear prior to establishing a positive climb rate. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Action: incorrect action performance](https://openairdocs.org/ntsb-findings/02041015): Personnel issues › Action/decision · Pilot (probable cause); cases with it: [Raytheon A36, 3 cases](https://openairdocs.org/ntsb-findings/02041015/cases.md?model=7150001), [All aircraft, 1,386 cases](https://openairdocs.org/ntsb-findings/02041015/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Takeoff: Landing gear collapse](https://openairdocs.org/ntsb-events/094) (defining event); cases with it: [Raytheon A36, 2 cases](https://openairdocs.org/ntsb-events/094/sequence.md?model=7150001), [All aircraft, 1,787 cases](https://openairdocs.org/ntsb-events/094/sequence.md) ## Analysis The pilot reported that during a touch-and-go he touched down successfully and “normalized” the airplane for takeoff. He said that before breaking ground the gear inadvertently raised. An on-scene examination of the wreckage revealed that the landing gear handle was located in the "up" position. The airplane was raised and the landing gear lowered when electrical power was turned on in the airplane and the landing gear handle was placed in the "down" position. No mechanical anomalies were detected with the landing gear system that would have precluded normal operation. The airplane's takeoff checklist states, "Landing Gear - RETRACT (when positive rate-of-climb is established)." ## Factual narrative On March 6, 2010, about 1415 central standard time, a Hawker Beechcraft Corp. A36, N1114X, piloted by a commercial pilot, sustained substantial damage when its landing gear collapsed during a touch and go on runway 22R (3,201 feet by 75 feet, asphalt) at the Lawrence J. Timmerman Airport (MWC), near Milwaukee, Wisconsin. The pilot was uninjured. The flight was conducted under the provisions of Title 14 Code of Federal Regulations Part 91. Visual meteorological conditions prevailed at the time of the accident and no flight plan was on file for the flight. The flight originated from the Hartford Municipal Airport, near Hartford, Wisconsin, about 1400 and was destined for MWC. The pilot reported that he performed a touch and go on runway 15L at MWC without incident. The tower then switched him to runway 22R for the next touch and go. He reported that he touched down successfully and “normalized” the airplane for takeoff. He said, “With full power and before breaking ground the gear inadvertently raised.” A Federal Aviation Administration inspector examined the airplane on-scene. The landing gear handle was found selecting the up position. The airplane was raised and the landing gear lowered when electrical power was turned on in the airplane and the landing gear handle was placed in the down position. No mechanical anomalies were detected with the landing gear system that would have precluded normal operations. The airplane's take-off checklist, in part, stated, "Landing Gear - RETRACT (when positive rate-of-climb is established)" ## Aircraft - Registration: [N1114X](https://openairdocs.org/aircraft/N1114X), registered now, S/N E-3055, built 1996 (OpenAirDocs) - Reported make and model: Hawker Beechcraft Corp. A36 - Registry model: [Raytheon A36](https://openairdocs.org/model/raytheon-a36) (registry code 7150001) (OpenAirDocs) - Registry engine: [Continental IO-550 series](https://openairdocs.org/engine/continental-io-550-series) (registry code 17042, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: E-3055 - Airframe hours: 862 - Engines: Teledyne Continental IO-550-B 300 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Standard, Normal - Last inspection: Annual, September 2, 2009 - Departed: HXF, Hartford, WI - Destination: MWC, Milwaukee, WI - Airport: MWC, Lawrence J Timmerman Airport, runway 22R, 3,201 × 75 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 78; injuries: none; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 3, with waivers/limitations; last flight review April 23, 2009; seat: left; flight hours: 5,400 total, 1,200 in this make and model, 5,100 as pilot in command, 4 in the last 90 days, 3 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: 190° at 5 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 39 °F, dew point 14 °F - Altimeter: 30.34 inHg - Observed at: MWC ## 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 20100306028799A](https://openairdocs.org/incident/20100306028799A), Mar 6, 2010: Raytheon Ai A36, Milwaukee, WI, Substantial damage. On March 6, 2010 at 1411 local time, a Beechcraft A-36, N1114X operated by [privacy data omitted], commercial pilot certificate [privacy data omitted], was… ## Docket (3 files) The files NTSB released with the investigation on April 8, 2010, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=75463. 1.1 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 607 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40327917&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Master.PDF - Takeoff Checklist Excerpt (item 2, .PDF, 78 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40327888&FileExtension=.PDF&FileName=Takeoff%20Checklist%20Excerpt-Master.PDF - Statement of Party Representatives to NTSB Investigation (item 3, .PDF, 386 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40327891&FileExtension=.PDF&FileName=Statement%20of%20Party%20Representatives%20to%20NTSB%20Investigation-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.