20250527007709A

Accident · Substantial damage

FAA accident report · West Desert Aviators RANS S-20 RAVEN · Fairfield, UT · May 27, 2025

Date
May 27, 2025 · 13:30 local
Place
Fairfield, UT
Airport
West Desert Airpark
Phase of flight
Takeoff: Climb Out
Operating rules
General operating rules (Part 91)
Damage
Substantial damage
Aircraft
N327KM
NTSB investigation
NTSBWPR25LA163
Reported as
West Desert Aviators Rans S-20 Raven
Reported engine
ROTAX 916 IS
People aboard
1
Fatal injuries
0
Other injuries
0
Pilot’s certificate
Sport pilot
Pilot’s flight hours
700 total

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry by N-number and event date, checked against the reported make and model; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

On may 27, 2025, privacy data omitted departed UT9 at ~1937MST leaving north on the runway. The PIC initiated a gradual climb heading east and then south east of the airport. After ascending to ~700 feet AGL, the aircraft experienced a power loss event in conjunction with a “generator entered failesafe event (lane not in control)” message. Downloaded engine data shows a drop in engine RPM not aligned with throttle position. As the aircraft descended, the PIC attempted multiple restarts without success. At ~200 feet AGL, the PIC ceased attempting to start the aircraft and assessed the landing. The aircraft impacted terrain at a slightly forward attitude in heavy brush which separated the main landing gear assemblies and caused substantial damage to the firewall bulkhead aft of the engine. A lack of damage to the leading edge of the propellor blades confirms that the engine was not under rotation at the time of impact. NTSB will be conducting further investigations of the operability of the Rotax 916IS engine and fuel supply systems at a later date. This report will be amended as investigations continue and additional information is relevant.

As the FAA filed it

ON MAY 27, 2025, ^PRIVACY DATA OMITTED^ DEPARTED UT9 AT ~1937MST LEAVING NORTH ON THE RUNWAY. THE PIC INITIATED A GRADUAL CLIMB HEADING EAST AND THEN SOUTH EAST OF THE AIRPORT. AFTER ASCENDING TO ~700 FEET AGL, THE AIRCRAFT EXPERIENCED A POWER LOSS EVENT IN CONJUNCTION WITH A “GENERATOR ENTERED FAILESAFE EVENT (LANE NOT IN CONTROL)” MESSAGE. DOWNLOADED ENGINE DATA SHOWS A DROP IN ENGINE RPM NOT ALIGNED WITH THROTTLE POSITION. AS THE AIRCRAFT DESCENDED, THE PIC ATTEMPTED MULTIPLE RESTARTS WITHOUT SUCCESS. AT ~200 FEET AGL, THE PIC CEASED ATTEMPTING TO START THE AIRCRAFT AND ASSESSED THE LANDING. THE AIRCRAFT IMPACTED TERRAIN AT A SLIGHTLY FORWARD ATTITUDE IN HEAVY BRUSH WHICH SEPARATED THE MAIN LANDING GEAR ASSEMBLIES AND CAUSED SUBSTANTIAL DAMAGE TO THE FIREWALL BULKHEAD AFT OF THE ENGINE. A LACK OF DAMAGE TO THE LEADING EDGE OF THE PROPELLOR BLADES CONFIRMS THAT THE ENGINE WAS NOT UNDER ROTATION AT THE TIME OF IMPACT. NTSB WILL BE CONDUCTING FURTHER INVESTIGATIONS OF THE OPERABILITY OF THE ROTAX 916IS ENGINE AND FUEL SUPPLY SYSTEMS AT A LATER DATE. THIS REPORT WILL BE AMENDED AS INVESTIGATIONS CONTINUE AND ADDITIONAL INFORMATION IS RELEVANT.

NTSB investigation

The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.