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MIA85FA251 · Jodel D-9

11 Sept 1985 · Okeechobee, FL, United States

Jodel D-9 · Accident: loss of control in flight during initial climb

From OKEEECHOBEE, FL to an unrecorded destination

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Event

NTSB case
MIA85FA251
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
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

Jodel D-9

Aircraft type
Jodel D-9
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
N12HD
Operator
Robert H. Knosp · private individual
Onboard fatalities
Unknown
Route
From OKEEECHOBEE, FLTo not recorded
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
Initial climb
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 control in flight
Also codedOther events the NTSB coded in the sequence, such as a wire strike after a loss of power. Flight Findings uses them for its kinds of event. Glossary
Stall/spin
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 › Airspeed, not maintained
  • Pilot in command › Stall/spin, inadvertent

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

NTSB narrative

THE PLT HAD FLOWN ONLY 4 HAS IN THE LAST 6 MONTHS IN A CESSNA 150 TYPE ACFT & HAD NEVER FLOWN A JODEL 09 BEFORE. THE PLT BOARDED THE ACFT, DECLINED A COCKPIT CHECK BY THE OWNER & MADE AN IMMEDIATE TAKE OFF. THE PLT TOOK OFF FROM THE GRASS STRIP WITHOUT PERFORMING ANY PREFLT CHECK, ENG RUN UP OR MAGCHECK. THE TAILWHEEL EQUIPPED EXPERIMENTAL ACFT WAS OBSERVED BY 2 PLT WITNESSES TO MAKE THE ENTIRE TAKE OFF RUN IN A 3 POINT ATTITUDE. THE ACFT CLIMBED AWAY FROM THE GROUND IN A VERY NOSE HIGH ATTITUDE, LEVELED OFF, THEN ENTER A NOSE HIGH ATTITUDE AGAIN. THIS ERRATIC FLT PATH WAS REPEATED SEVERAL TIMES BEFORE THE ACFT WAS OBSERVED TO ENTER A STALL THEN SPIN TO THE GROUND FROM AN ALT OF 150 TO 200 FT. THE OWNER OF THE ACFT DESCRIBED THE ACFT AS EASY TO FLY BUT 'A LITTLE SENSITIVE ON THE CONTROLS.

Verbatim NTSB analysis from the NTSB dataset

Sources

NTSB record MIA85FA251
Event ID
20001214X37835
Case number
MIA85FA251
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: e80b45aaf8e7239c4624a580a334a38254dd4e012820aed5e3741a37c0056563; retrieved 2026-09-21T04:51:01.153Z.