LAX98LA204
1998-06-15 · PALM SPRINGS, California, United States · None · 1 aircraft · Status: Completed
Airport PSP
Current FAA registration · N96GF
- Make / Model
- LANCAIR LANCAIR 320
- Year of manufacture
- 1996 · 2 years old at event
- Engine
- LYCOMING O-320-E2A (150 hp)
- Seats / Engines
- 2 seats · 1 engine
- Last airworthiness date
- 20151028
- ADS-B equipped
- Yes — Mode-S AD5A69
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
A failure of the electrical system for undetermined reasons. The pilot's decision to continue flight with a suspected electrical system anomaly is a factor in the accident.
Factual narrative
On June 15, 1998, at 1300 hours Pacific daylight time, an amateur built experimental Fife Lancair 320, N96GF, landed with only the right main landing gear extended during a precautionary landing on runway 13L at the Palm Springs, California, airport. The aircraft, operated under 14 CFR Part 91, sustained substantial damage. The pilot/owner, the sole occupant, was not injured. Visual meteorological conditions existed for the personal flight that had originated from Albuquerque, New Mexico, the day of the accident. A refueling stop was made in Prescott, Arizona, at 1105 mountain standard time and the flight was scheduled to terminate at the Oceanside, California, airport. No flight plan was filed. The pilot reported that after refueling in Prescott he was unable to start the engine, and had to obtain a jump-start from a ground power source. After takeoff, he noted that the autopilot was not working and the main 50-amp circuit breaker had tripped. The pilot stated that he reset the circuit breaker and the ammeter showed a positive charge. Approximately 30 minutes after takeoff, he noted that the "radio [was] weak, also noticed fuel transfer pump weak." The pilot stated that he shut off all electrical power except for the transfer pump. Approximately 45 minutes later he noted that the header tank was 1/3 full. The pilot stated that he looked for an alternate airport to make a precautionary landing. He circled over the airport and attempted to manually extend the landing gear but only the right main gear fully extended. He landed on runway 13L with no flaps and came to rest off of the runway. A Federal Aviation Administration inspector from the Riverside, California, Flight Standards District Office reported that the pilot trucked the airplane back to Albuquerque, New Mexico, and it was not inspected. After refueling, the aircraft had to be jump-started by a ground power source. After takeoff, the main circuit breaker tripped and the pilot manually reset it with a positive charge shown on the ammeter. About 30 minutes into the flight the pilot noted that the radio and fuel transfer pump were weak, and he reduced all nonessential electrical loads. A short time later the pilot noted that the header tank was 1/3 full, and attempted to make a precautionary landing. The pilot stated that he attempted to manually extend the landing gear, however, only the right main extended. After touchdown the airplane slid off the runway. The aircraft was moved prior to examination and the source of the electrical malfunction could not be determined. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1998_LAX98LA204.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
Search this event elsewhere
External sources are reported, not agency: signal that something happened, not fact about what happened.
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Related research
Matched on aircraft type or causal vocabulary (autopilot). All research papers
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- arXiv 2025 · arXiv preprint ROSplane 2.0: A Fixed-Wing Autopilot for Research
Unmanned aerial vehicle (UAV) research requires the integration of cutting-edge technology into existing autopilot frameworks.
- arXiv 2024 · arXiv preprint A Data-Driven Autopilot for Fixed-Wing Aircraft Based on Model Predictive Control
Autopilots for fixed-wing aircraft are typically designed based on linearized aerodynamic models consisting of stability and control derivatives obtained from wind-tunnel testing.
- arXiv 2022 · arXiv preprint Experimental Flight Testing of a Fault-Tolerant Adaptive Autopilot for Fixed-Wing Aircraft
This paper presents an adaptive autopilot for fixed-wing aircraft and compares its performance with a fixed-gain autopilot.
- arXiv 2021 · arXiv preprint An Adaptive Digital Autopilot for Fixed-Wing Aircraft with Actuator Faults
This paper develops an adaptive digital autopilot for a fixed-wing aircraft and compares its performance with a fixed-gain autopilot.
- arXiv 2026 · arXiv preprint Robust Adaptive Sliding-Mode Control for Damaged Fixed-Wing UAVs
Many unmanned aerial vehicles (UAVs) can remain aerodynamically flyable after sustaining structural or control surface damage, yet insufficient robustness in conventional autopilots often leads to mis…