WPR14LA323 · Rans S-16
Rans S-16 · Accident: loss of engine power (total) during takeoff
From Fort Bridger Airport (FBR) to Fort Bridger Airport (FBR)
Event
- NTSB case
- WPR14LA323
- 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
- 0 · all aircraft and ground
- Ground fatalities
- Unknown
- 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
- General aviation
- WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
- Visual Meteorological Cond
Rans S-16
- Aircraft type
- Rans S-16
- 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
- N116GS
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Fort Bridger Airport (FBR), Fort Bridger, WYTo Fort Bridger Airport (FBR), Fort Bridger, WY
- Aircraft age
- About 13 years (built 2001)
- 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 91: General Aviation
- 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
- Takeoff
- Defining eventThe 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
- Loss of engine power (total)
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- Substantial
Cause areas
- Aircraft › Aircraft power plant
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
Shortly after takeoff, experimental amateur-built airplane's engine lost all power. The pilot/owner performed a forced landing onto a road, and, during the landing flare, the main landing gear caught the edge of the road and collapsed. The airplane struck a pit and sustained substantial damage. The pilot had recently reinstalled the engine's fuel servo following the servo's overhaul, and this was the first flight since the installation. Postaccident examination revealed that the fuel line's B-nut fitting connecting the fuel servo to the fuel flow divider was about 1 1/3 turns loose. It is likely that the pilot had either forgotten to tighten the fitting or had not applied sufficient torque during reinstallation of the servo.
Probable cause
The fuel flow divider inlet line’s B-nut coming loose during takeoff, resulting in a total loss of engine power. Contributing to the accident was the pilot's failure to adequately tighten the B-nut during recent maintenance.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record WPR14LA323
- Event ID
- 20140801X33935
- Case number
- WPR14LA323
- Dataset
- full-current
- Source SHA-256
- 5cf380f0061817c0331a6b2d8cc7e0ee3a79bea469a1001dc5c10e56f35f5ab3
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: 71c87cb2bd1b898e40b9508d0508845d1a6bd5c6f922c1461bad032f22234946; retrieved 2026-09-16T01:35:36.138Z.