# Accident 19991226037109A: Amtr AVENTURAII, Antioch, CA, December 26, 1999

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: December 26, 1999, 13:50 local time
- Place: Antioch, CA
- Damage: Substantial damage
- Phase of flight: Level Off Touchdown
- Operating rules: General operating rules (Part 91)
- Location: 37.9891° N, 121.8109° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=37.9891&lon=-121.8109&mi=10
- Aircraft: N8180Q, registered now (https://openairdocs.org/aircraft/N8180Q) (OpenAirDocs)
- Registry model: Quest II Walsh AVENTURA II (registry code 05606FX, https://openairdocs.org/model/quest-ii-walsh-aventura-ii) (OpenAirDocs)
- Registry engine: Bombardier ROTAX (ALL) (registry code 09050, https://openairdocs.org/engine/bombardier-rotax-all) (OpenAirDocs)
- Reported make and model: AMTR AVENTURAII
- Reported engine: ROTAX ROTAX912
- Fatal injuries: 0
- Pilot flight hours: 150 total, 60 in the last 90 days
- NTSB investigation: [NTSB LAX00LA059](https://openairdocs.org/ntsb/LAX00LA059) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19991226037109A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

(.19) ON DECEMBER 26, 1999, ABOUT 1404 HOURS PACIFIC STANDARD TIME, AN EXPERIMENTAL QUEST II WALSH LTD., AVENTURA II, N8180Q, OPERATED BY THE PILOT, NOSED OVER DURING LANDING IN A LAKE ABOUT 10 MILES EAST OF ANTIOCH, CALIFORNIA. VISUAL METEOROLOGICAL CONDITIONS PREVAILED AT THE TIME OF THE PERSONAL FLIGHT, WHICH WAS BEING PERFORMED UNDER THE PROVISIONS OF 14 CFR PART 91.  THE AIRPLANE WAS SUBSTANTIALLY DAMAGED.  THE PRIVATE PILOT AND PASSENGER SUSTAINED MINOR INJURIES.  THE FLIGHT ORIGINATED FROM BYRON, CALIFORNIA, ABOUT 1350. THE PILOT INDICATED TO THE NATIONAL TRANSPORTATION SAFETY BOARD INVESTIGATOR THAT HE TOOK OFF IN THE AMPHIBIOUS AIRPLANE FROM AN ASPHALT RUNWAY AT BYRON, AND THEN HE FLEW TO A LAKE NEAR ANTIOCH.  THE PILOT STATED THAT DURING THE LANDING APPROACH HE FORGOT TO RETRACT THE LANDING GEAR WHEELS.  UPON TOUCHDOWN, THE AIRPLANE NOSED OVER.                                 (-23)PILOT, ^PRIVACY DATA OMI^ FAILED TO POSITION THE LANDING GEAR IN THE UP POSITION UPON ATTEMPTING A SEA LANDING AT BETHEL ISLAND RESULTING IN THE AIRCRAFT PITCHING UP ON CONTAST WITH THE WATER AND PITCHED UPSIDE DOWN RESTING SUBMERGED IN APPROXIMATELY 7 FEET OF WATER.  THE PILOT WAS ABLE TO FREE  HIMSELF AND RESCUE THE SOLE PASSENGER, ^PRIVACY DATA OMITT^ WITH THE HELP OF THE USCG.                                                              (.4)ON DECEMBER 26, 1999, ABOUT 1350 HOURS PACIFIC STANDARD TIME, AN EXPERIMENTAL QUEST II WALSH LTD., AVENTURA II, N8180Q, OPERATED BY THE PILOT, NOSED OVER DURING LANDING IN A LAKE ABOUT 10 MILES NORTHEAST OF ANTIOCH, CALIFORNIA.  VISUAL METEOROLOGICAL CONDITIONS PREVAILED AT THE TIME OF THE PERSONAL FLIGHT, WHICH WAS BEING PERFORMED UNDER THE PROVISION OF 14 CFR PART 91.  THE AIRPLANE WAS SUBSTANTIALLY DAMAGED.  THE PRIVATE PILOT AND PASSENGER SUSTAINED MINOR INJURIES.  THE FLIGHT ORIGINATED FROM BYRON, CALIFORNIA, ABOUT 1325.  THE PILOT INDICATED TO THE NATIONAL TRANSPORTATION SAFETY BOARD INVESTIGATOR THAT HE TOOK OFF IN THE AMPHIBIOUS AIRPLANE FROM AN ASPHALT RUNWAY AT BYRON, AND THEN HE FLEW TO A LAKE NEAR ANTIOCH.  THE PILOT STATED THAT DURING THE LANDING APPROACH HE FORGOT TO RETRACT THE LANDING GEAR WHEELS.  UPON TOUCHDOWN, THE AIRPLANE NOSED OVER.  THE PILOT ALSO INDICATED THAT NO MECHANICAL MALFUNCTIONS WERE EXPERIENCED WITH THE AIRPLANE DURING HIS FLIGHT.

## The NTSB's investigation of this event (1)

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.

- [NTSB LAX00LA059](https://openairdocs.org/ntsb/LAX00LA059), Dec 26, 1999: Quest II Walsh Aventura II (N8180Q), Antioch, CA, substantial damage. Probable cause: The pilot's inattention to the fact that he had failed to retract the landing gear wheels prior to performing a water landing.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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