Union Flights Flight 9840
Cessna 208B · Accident: in flight collision with terrain/water on approach
From Sacramento International Airport (SMF) to Reno Tahoe International Airport (RNO)
Event
- NTSB case
- LAX95FA141
- Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
- Accident
- InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
- Completed
- API-reported fatalities
- 1 · all aircraft and ground
- Ground fatalities
- 0
- OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
- Charter & commuter
- WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
- Instrument Meteorological Cond
Cessna 208B
- Aircraft type
- Cessna 208
- Category
- Airplane
- RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
- N9417B
- Operator
- Union Flights
- Onboard fatalities
- Unknown
- Route
- From Sacramento International Airport (SMF), Sacramento, CATo Reno Tahoe International Airport (RNO)
- Aircraft age
- Not recorded
- Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
- Part 135: Air Taxi & Commuter
- Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
- Approach · IFR initial approach
- First occurrenceThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
- In flight collision with terrain/water
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- Destroyed
Cause areas
- Pilot in command › Altitude, not obtained/maintained
- Pilot in command › Descent, premature
- Pilot in command › IFR procedure, improper
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
Approaching Reno, the pilot received an instrument clearance to perform a Localizer DME-1, Rwy 16R, approach, which the FAA had previously approved for the operator's use. The localizer centerline passed over a 6,161-foot msl mountain, which was depicted on the chart. The pilot was familiar with the area, having transported cargo from Sacramento to Reno for 5 days each week since December, 1994. IMC existed and light snow showers were present. ATC issued the pilot a series of instructions as he was radar vectored toward the final approach fix (FAF), which had a minimum crossing altitude of 6,700 feet msl. The pilot misstated four of the instructions during clearance readbacks and was corrected by ATC each time. Contact with the pilot was lost following issuance of his landing clearance. The airplane impacted the mountainside at an elevation of about 6,050 feet, while tracking inbound near the centerline of the localizer course, about 2.7 nautical miles before reaching the FAF. The airframe, engine, and avionics equipment were examined. No mechanical malfunctions were found.
Probable cause
the pilot's failure to comply with published instrument approach procedures by a premature descent below the minimum altitude specified for the approach.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record LAX95FA141
- Event ID
- 20001207X03133
- Case number
- LAX95FA141
- Dataset
- historical-pre2008
- Source SHA-256
- 89e2df6d848e7ab3b42e7d7c7a03ff403303057a26ca04c95b3ea67201c3ce74
Source notes (4)
- Unreviewed is an editorial label, not an investigation status. API-sourced is not report-checked or human-reviewed. Explicit event totals are used without summing aircraft injury tables; onboard allocation is withheld. Unknown values remain unknown. The operation category is mapped from the NTSB-reported FAR part and has not been reviewed.
- Filled from the NTSB case API where the bulk record had no value: investigation status. Values present in the bulk record are kept.
- The date is the local date, which is the same as the UTC date the NTSB stores.
- API snapshot SHA-256: dc7fcf810da5728820b94cff616dc0d397d4f6a6fd1c3294e45ed28d536882bf; retrieved 2026-09-18T13:43:20.744Z.