# NTSB GAA19CA494: Rockwell 690, N52PY, Stockton, CA, August 14, 2019 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: August 14, 2019, 14:20 local (21:20 UTC) - Place: Stockton, CA - Coordinates: 37.894443, -121.238609 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=37.8944&lon=-121.2386&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing: Landing gear not configured](https://openairdocs.org/ntsb-events/095) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report July 27, 2020 - Report: Approved by Office Director - NTSB office: General Aviation Accidents - NTSB case key (mKey): 100064 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=GAA19CA494 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/100064/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=100064 - Page: https://openairdocs.org/ntsb/GAA19CA494 ## Probable cause The pilot's delay in extending the landing gear and his improper movement of the landing gear lever, which led to a gear-up landing. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Use of equip/info: use of equip/system](https://openairdocs.org/ntsb-findings/02063015): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Aero Commander 690A, 1 case](https://openairdocs.org/ntsb-findings/02063015/cases.md?model=0141722), [All aircraft, 1,391 cases](https://openairdocs.org/ntsb-findings/02063015/cases.md) - [Action: delayed action](https://openairdocs.org/ntsb-findings/02041025): Personnel issues › Action/decision · Pilot (probable cause); cases with it: [Aero Commander 690A, 1 case](https://openairdocs.org/ntsb-findings/02041025/cases.md?model=0141722), [All aircraft, 894 cases](https://openairdocs.org/ntsb-findings/02041025/cases.md) - [Landing gear system: gear extension and retract sys](https://openairdocs.org/ntsb-findings/01023230): Aircraft › Aircraft systems · Incorrect use/operation (probable cause); cases with it: [Aero Commander 690A, 1 case](https://openairdocs.org/ntsb-findings/01023230/cases.md?model=0141722), [All aircraft, 416 cases](https://openairdocs.org/ntsb-findings/01023230/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Landing: Landing gear not configured](https://openairdocs.org/ntsb-events/095) (defining event); cases with it: [Aero Commander 690A, 1 case](https://openairdocs.org/ntsb-events/095/sequence.md?model=0141722), [All aircraft, 584 cases](https://openairdocs.org/ntsb-events/095/sequence.md) ## Analysis The pilot reported that, during the approach, the airspeed was high, so he decreased it. He did not extend the landing gear until short final, at which point, he pushed down hard on the landing gear lever to extend the landing gear; however, he added that, after thinking about what happened, he realized that he must have inadvertently pushed the gear lever to the side, which "bound up the handle." Due to the airplane's proximity to the runway, he decided to land the airplane with the landing gear retracted, and the airplane slid to a stop on the runway. The airplane sustained substantial damage to the lower fuselage. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. ## Factual narrative The pilot in the retractable landing gear-equipped airplane reported that during approach, the airplane's airspeed was high. He decreased the airspeed and "pushed hard on the down lever" to extend the landing gear. However, the pilot had inadvertently pushed the lever to the side, which "bound up the (lever) handle." The pilot decided to land with the landing gear retracted, and the airplane slid to a stop on the runway. The airplane sustained substantial damage to the lower fuselage. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. ## Aircraft - Registration: [N52PY](https://openairdocs.org/aircraft/N52PY), registered now, S/N 11196 (OpenAirDocs) - Reported make and model: Rockwell 690 (A) - Registry model: [Aero Commander 690A](https://openairdocs.org/model/aero-commander-690a) (registry code 0141722) (OpenAirDocs) - Registry engine: [Garrett TPE331-10T](https://openairdocs.org/engine/garrett-tpe331-10t) (registry code 29065, turbo-prop) (OpenAirDocs) - Category: Airplane - Serial number: 11196 - Year built: 1974 - Airframe hours: 8920.5 - Engines: Garrett TPE331-10T 1000 horsepower turbo prop; Garrett TPE331-10T 1000 horsepower turbo prop - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Jk Aviation Llc - Registered owner: Jk Aviation Llc - Airworthiness certificate: Standard, Normal - Last inspection: Annual, May 7, 2019 - Departed: MEV, Minden, NV - Destination: SCK, Stockton, CA - Flight plan: VFR - Airport: SCK, Stockton Metropolitan, runway 29R, 10,249 × 150 ft, asphalt - Equipment: Auto-pilot, Electronic multifunction display, Electronic primary flight display, Onboard weather, Satellite tracking device, Stall warning system, ADS-B, Angle of attack indicator ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 75; injuries: none; private; airplane ratings: multi-engine land, single-engine land, single-engine sea; instrument ratings: airplane; medical: class 3, with waivers/limitations; last flight review April 30, 2019; seat: left; restraint: 3-point; flight hours: 5,061 total, 1,462 in this make and model, 5,061 as pilot in command ## Weather - Conditions: Visual (VMC), Day - Wind: 350° at 7 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 102 °F, dew point 57 °F - Altimeter: 29.89 inHg - Observed at: KSCK, 1 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). - [Incident 20190814018049I](https://openairdocs.org/incident/20190814018049I), Aug 14, 2019: Aero Commander 690A, Stockton, CA, Minor damage. Stockton, CA (sck) N52PY, AC90 gear up landing rwy 29R POB:1, injuries: none, damage extent minor, 08/14/19 2120Z ## Docket (2 files) The files NTSB released with the investigation on December 10, 2019, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=100064. 4.0 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 3.8 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40478892&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Master.PDF - Photo (item 2, .PDF, 136 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40478893&FileExtension=.PDF&FileName=Photo-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.