- Date
- August 3, 2024, 12:45 local (19:45 UTC)
- Place
- Lodi, CA
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Enroute
- Aircraft
- N657MJProtech PT2
- Defining event
- Enroute: Unknown or undetermined
- Weather
- Visual (VMC) · Day
- Status
- Completed · report June 25, 2026
- Report
- Approved by Office Director
- Investigation class
- Class 3
- NTSB office
- Western Pacific Region
- Parties
- FAA
- Case key
- 194856
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
A reported loss of engine power for reasons that could not be determined.
Findings · 1
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, who held a student pilot certificate, stated that he maneuvered in the local area after departure. After about 40 minutes, he started to return to the airport. With the airplane about 2,000 ft above ground level (agl), the engine lost all power. Despite his attempts, the engine would not start, and the pilot maneuvered toward a field to make an off-airport emergency landing. During the landing touchdown, the airplane impacted a grapevine, substantially damaging the left wing struts. The pilot did not respond to investigators’ requests to examine the airplane. Therefore, the investigation was unable to determine the reason for the reported loss of engine power.
Factual narrative
On August 3, 2024, about 1245 Pacific daylight time, a Protech PT2 experimental amateur-built airplane, N657MJ, was substantially damaged when it was involved in an accident near Lodi, California. The pilot was not injured. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 personal flight. The pilot, who held a student pilot certificate, stated that he maneuvered in the local area after departure. After about 40 minutes, he started to return to the airport. With the airplane about 2,000 ft agl, the engine lost all power. Despite his attempts, the engine would not start, and the pilot maneuvered toward a field to make an off-airport emergency landing. During the landing touchdown, the airplane impacted a grapevine, substantially damaging the left wing struts. The pilot stated that just before impact, the fuel tanks were both ¼ full, and there were six gallons of fuel on board at the last takeoff. The pilot did not respond to numerous attempts to contact him by NTSB investigators and FAA inspectors, and they were unable to examine the airplane.
Aircraft
- Registration
- N657MJ
- Reported as
- Protech PT2
- Category
- Airplane, amateur-built
- Serial number
- PT 1135
- Built
- 1992
- Airframe hours
- 2,218.6
- Engine
- Lycoming O-320-1A10, 150 hp, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Airworthiness certificate
- Special, Experimental (Special)
- Last inspection
- Continuous airworthiness · June 7, 2024 · 21.4 hours before
- Destination
- Same as departure
- Airport
- 1O3 · Lodi
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
- 27
- Injuries
- None
- Certificate
- Student
- Medical
- Class 3, Without waivers/limitations
- Seat
- Left
- Restraint
- Lap only
- Flight hours
- 120 total · 12 in this make and model
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- Variable at 4 knots
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 95 °F, dew point 52 °F
- Altimeter
- 29.92 inHg
- Observed at
- KSCK, 1 nm away
- METAR
- KSCX 031855Z VRB04KT 10SM CLR 35/11 A2992 RMK AO2 SLP131 T03500111
Docket · 2
The files NTSB released with the investigation on June 25, 2026, on NTSB’s docket system: statements, records, photos and specialists’ reports. 7.6 MB in all.