WPR24LA269

NTSB accident investigation · Protech PT2 · Lodi, CA · August 3, 2024

Accident · No injuriesClass 3 · LimitedFinal report
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.

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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.

Power plantAircraft › Aircraft power plant · Unknown/Not determinedHayes James E PT 2 PROTECH: 1 caseAll aircraft: 198 casesProbable cause

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.