# Accident 20200427002589A: Cook Gary L SONEX, Upland, CA, April 27, 2020

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: April 27, 2020, 08:25 local time
- Place: Upland, CA
- Damage: Substantial damage
- Phase of flight: Takeoff: Climb Out
- Operating rules: General operating rules (Part 91)
- Location: 34.1106° N, 117.6819° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=34.1106&lon=-117.6819&mi=10
- Aircraft: N1222C, registered now (https://openairdocs.org/aircraft/N1222C) (OpenAirDocs)
- Registry model: Cook Gary L SONEX (registry code 05634TB, https://openairdocs.org/model/cook-gary-l-sonex) (OpenAirDocs)
- Registry engine: Jabiru 3300 (registry code 34801, https://openairdocs.org/engine/jabiru-3300) (OpenAirDocs)
- Reported make and model: COOK GARY L SONEX
- Reported engine: JABIRU 3300
- People aboard: 1
- Fatal injuries: 0
- Other injuries: 1
- NTSB investigation: [NTSB WPR20CA132](https://openairdocs.org/ntsb/WPR20CA132) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20200427002589A

## Narrative

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

AIRMAN PLANNED A RECURRENT FLYING DAY IN HIS EXPERIMENTAL  SONEX. HE PERFORMED THE ANNUAL INSPECTION JUST A FEW DAYS BEFORE THIS FLIGHT.  ONLY ABOUT 1.5 TO 2 HOURS HAD ELAPSED SINCE INSPECTION. AFTER A THOROUGH PREFLIGHT INSPECTION, THE AIRMAN DID A RUNUP AND WENT TO THE PRACTICE AREA FOR 20 MINUTES. HE LANDED AND WENT BACK TO THE RUNWAY FOR ANOTHER TAKEOFF. AT ABOUT 300 FEET AGL, THE ENGINE LOST POWER. THE PILOT LOCATED A GRAVEL FIELD AND LANDED OFF-AIRPORT SUCCESSFULLY. THE LANDING GEAR COLLAPSED DUE TO A HARD LANDING. THE PILOT HAD A MINOR SCRAPE AND SOME SEATBELT ABRASIONS ONLY.

## 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 WPR20CA132](https://openairdocs.org/ntsb/WPR20CA132), Apr 27, 2020: Cook Sonex (N1222C), Upland, CA, substantial damage. Probable cause: A gradual loss of engine power during takeoff due to the pressure regulator not keeping continuous fuel pressure which led to a precautionary off airport landing and collision with terrain.

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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