- Date
- December 22, 2019, 13:00 local (20:00 UTC)
- Place
- Lake Havasu City, AZ
- Injuries
- 1 serious, 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Enroute
- Aircraft
- N5057ZCosmos Phase II
- Defining event
- Enroute-cruise: Loss of engine power (total)
- Weather
- Visual (VMC) · Day
- Status
- Completed · report June 16, 2020
- Report
- Approved by Office Director
- NTSB office
- Western Pacific Region
- Parties
- Federal Aviation Adminsitration
- FAA report
- 20191222019889A
- Case key
- 100758
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
The total loss of engine power due to fuel exhaustion, which resulted from the pilot's inadequate preflight fuel inspection.
Findings · 3
NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.
Sequence of events
The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.
Analysis
The pilot reported that, while the trike was at cruise flight about 800 ft above ground level, the engine lost power. He attempted to restart the engine to no avail and then initiated a landing in open desert. During the landing roll, the trike impacted a large boulder. Postaccident examination of the trike revealed that it had run out of fuel. The pilot added that the trike was not equipped with a fuel quantity gauge and that the only way to verify the fuel level was to visually look in the fuel tank. Additionally, he thought he had a full tank of fuel before takeoff. The trike sustained substantial damage to the forward upright wing support tubes. The pilot reported that there were no preaccident mechanical failures or malfunctions with the trike that would have precluded normal operation.
Factual narrative
The private pilot reported that during cruise flight at an altitude of about 800 ft above ground level, the engine lost power. Despite his attempt, he could not restart the engine and initiated a landing in the open desert. During the landing roll, the aircraft impacted a large boulder. The pilot stated that the examination of the trike after the accident revealed that he had ran out of gas. The pilot added that the trike was not equipped with a fuel quantity gauge, and that the only way to verify the fuel level was visually looking into the fuel tank. Additionally, he thought he had a full tank of gas prior to takeoff.The trike sustained substantial damage to the forward upright wing support tubes. The pilot reported that there were no preaccident mechanical failures or malfunctions with the trike that would have precluded normal operation.
Aircraft
- Registration
- N5057Z
- Reported as
- Cosmos Phase II
- Category
- Airplane, amateur-built
- Serial number
- B21479
- Built
- 2000
- Engine
- Rotax 503, 50 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Airworthiness certificate
- Special, Experimental (Special)
- Departed
- Lake Havasu, AZ
- Destination
- Lake Havasu, AZ
- Equipment
- Unknown
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 66
- Injuries
- Serious
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Medical
- Class 3, Without waivers/limitations
- Seat
- Left
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- Calm
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 50 °F, dew point 34 °F
- Altimeter
- 30.07 inHg
- Observed at
- KEED, 24 nm away
Docket · 2
The files NTSB released with the investigation on February 28, 2020, on NTSB’s docket system: statements, records, photos and specialists’ reports. 631 KB in all.
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.