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CHI99LA247 · Ryan NAVION A

22 Jul 1999 · Keokuk, IA, United States

Ryan NAVION A · Accident: loss of engine power on approach

From FIO · Paducah, KY to Keokuk Municipal Airport (EOK)

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Event

NTSB case
CHI99LA247
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
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
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

Ryan NAVION A

Aircraft type
Ryan NAVION
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
N4902K
Operator
Unknown
Onboard fatalities
Unknown
Route
From FIO · Paducah, KYTo Keokuk Municipal Airport (EOK), IA
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 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
Approach · VFR pattern downwind
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
Loss of engine power
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

  • Reason for occurrence undetermined

Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.

NTSB narrative

The pilot stated he had topped off the accident airplane's fuel before departure. He said that during the landing approach, he reduced engine power, lowered the landing gear, and extended 1/2 flaps. Subsequently, he applied power and the engine did not respond. A soybean field was selected and a forced landing executed in the field resulting in substantial damage. The investigation revealed engine continuity and no pre-existing engine anomalies were found. Fuel was recovered from the airplane. Fuel was also present on the ground at the scene and the glass gascolator bowl was found broken. The fuel selector was found on the main tank position and was selected to the off position by the first person to arrive at the accident site.

Probable cause

Loss of engine power for undetermined reasons.

Verbatim NTSB analysis and probable cause from the NTSB dataset

Sources

NTSB record CHI99LA247
Event ID
20001212X19206
Case number
CHI99LA247
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: f066ee6bf82ea0d995700702a3406c8512e84d51a2ee15cc873da1e63d470169; retrieved 2026-09-21T20:27:47.527Z.