LAX94LA204
1994-04-24 · ACAMPO, California, United States · None · 1 aircraft · Status: Completed
Airport 1O3
Aircraft involved
Probable cause & findings
THE PILOT'S FAILURE TO USE CARBURETOR HEAT DURING THE EXTENDED POWER-OFF DESCENT. THE EXISTING CARBURETOR ICING CONDITIONS, THE PILOT'S DIVERTED ATTENTION, AND THE POWER LINES WERE FACTORS IN THIS ACCIDENT.
Factual narrative
On April 24, 1994, at 1445 hours Pacific daylight time, a Beech UC-45J, N35095, crashed after colliding with a power line near Lodi Airport, Acampo, California. The pilot was conducting a local visual flight rules skydiving flight. The airplane, registered to and operated by the pilot, sustained substantial damage. The certificated commercial pilot, the sole occupant, was not injured. Visual meteorological conditions prevailed. The flight originated at Lodi Airport at 1430 hours. The pilot reported in a telephone interview conducted on April 25, 1994, that the flight departed Lodi Airport with several parachutists. Before departing on the accident flight, he put fuel in the right wing main fuel tank. During the climb out, he switched the fuel selector to the crossfeed position knowing that the left fuel tank was low in fuel. While climbing to cruise altitude, the left engine stopped momentarily. After passing through 9,000 feet mean sea level, the right engine stopped momentarily. The pilot elected to descend to 5,000 feet and then instructed the parachutists to bail out. After the parachutists bailed out, the pilot returned to the airport. The pilot reduced the power to idle on both engines and began the descent toward the airport. Both engines appeared to be running. The pilot entered the traffic pattern while descending. When the pilot turned onto the base leg, he applied power on both engines, but they did not respond. Realizing that the airplane's altitude was insufficient to make the airport, the pilot elected to land in an open field. The airplane collided with a power line during the forced landing and crashed. The pilot also said that during the descent he diverted his attention to the fuel system to find the cause of the momentary loss of power on both engines. He then said that during the descent he did not apply carburetor heat and that both engines lost power due to carburetor icing. The pilot submitted the required Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1/2, to the National Transportation Safety Board, Southwest Regional Office. He reiterated his telephone statement in the report. He also said that the parachutists bailed out at 9,000 feet msl. When he turned the airplane onto the final approach course (not onto the base leg as he stated in the telephone interview) with the landing gears and flaps retracted, he added power on both engines. The engines did not respond and then he elected to land in an open field. Mr. Scott R. Myers, Aviation Safety Inspector, Federal Aviation Administration (FAA), Oakland [California] Flight Standards District Office, conducted the on-scene investigation. Inspector Myers reported that the operator had moved the airplane before he arrived to conduct the investigation. Inspector Myers' examination of the wreckage showed no evidence of any fuel in either fuel tank. He was able to drain about 2 centimeters of fuel from the left engine carburetor supply line. The right engine carburetor supply line was broken and contained no fuel. The pilot provided Inspector Myers with a video tape of the accident scene that showed him "dipping" the fuel tanks. The video revealed that the left fuel tank was empty and the right fuel tank appeared to have liquid, presumably fuel. The Stockton Airport, located about 22 miles south of the accident site, surface weather observation revealed that the prevailing temperature was 58 degrees fahrenheit and the dewpoint was 41 degrees fahrenheit. According to the FAA's Carburetor Icing Probability Chart, serious carburetor icing could occur at glide power. THE PILOT WAS CONDUCTING A LOCAL SKYDIVING FLIGHT. DURING THE CLIMB, BOTH ENGINES BEGAN TO OPERATE INTERMITTENTLY. THE PILOT INSTRUCTED THE PARACHUTISTS TO BAIL OUT AT 9,000 FEET MSL AND RETURNED TO THE AIRPORT. THE PILOT FAILED TO USE CARBURETOR HEAT DURING THE DESCENT. THE PILOT APPLIED POWER TO BOTH ENGINES WHILE ON FINAL APPROACH, BUT GOT NO RESPONSE. THE PILOT ELECTED TO LAND IN AN OPEN AREA, BUT THE AIRPLANE COLLIDED WITH A POWER LINE AND CRASHED. ACCORDING TO THE FAA'S CARBURETOR PROBABILITY CHART, THE EXISTING WEATHER CONDITIONS WERE SUSCEPTIBLE TO SERIOUS CARBURETOR ICING IN A POWER-OFF DESCENT. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1994_LAX94LA204.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.
- TallyAero Live Wire Aviation press
- NTSB CAROL Agency ↗
- NTSB Docket Agency ↗
- Aviation Safety Network Aviation press ↗
- Kathryn's Report Aviation press ↗
- Aviation Herald Aviation press ↗
- AVweb Aviation press ↗
- Pilots of America Community ↗
- Reddit /r/flying Community ↗
- FlightAware Aviation press ↗
- AOPA accident database Aviation press ↗
- Google News News ↗
- DuckDuckGo News ↗
Related research
Matched on aircraft type or causal vocabulary (icing). All research papers
- arXiv 2026 · arXiv preprint Enabling Beyond-Visual-Line-of-Sight Drones Operation over Open RAN 5G Networks with Slicing
Among the foretold claims of the transition from 5G to 6G, Beyond-Visual-Line-of-Sight (BVLoS) drone operation has emerged as a prominent Internet-of-Robots enabler.
- NASA NTRS 2026 · Contractor Report (CR) Icing Physics Studies Using the 3D SIDRM Test Article: 2023 Icing Tests Analysis
In-flight icing is an important safety issue and is a factor that affects aircraft design and performance. Newer regulations are driving a need for improvements in airframe and engine icing simulation…
- arXiv 2025 · arXiv preprint Multi-Agent Deep Reinforcement Learning for UAV-Assisted 5G Network Slicing: A Comparative Study of MAPPO, MADDPG, and MADQN
The growing demand for robust, scalable wireless networks in the 5G-and-beyond era has led to the deployment of Unmanned Aerial Vehicles (UAVs) as mobile base stations to enhance coverage in dense urb…
- NASA NTRS 2025 · Presentation NASA Icing Update – March 2025
This NASA Icing Update was prepared for presentation to the SAE International AC-9C Inflight Icing Technology Committee. This update includes the following topics: planned Rotational Icing Scaling tes…
- Embry-Riddle Scholarly Commons 2025 · Journal article (JAAER) A Mathematical Model on the Temporal Dynamics of Aviation Competitive Pricing
This study investigates the competitive dynamics of airport pricing using U.S. airport data to validate the findings. It employs linear and nonlinear ordinary differential equation models to analyze t…
- arXiv 2024 · arXiv preprint An energy-stable phase-field model for droplet icing simulations
A phase-field model for three-phase flows is established by combining the Navier-Stokes (NS) and the energy equations, with the Allen-Cahn (AC) and Cahn-Hilliard (CH) equations and is demonstrated ana…