Hughes 369HS accident near Oklahoma City, Oklahoma, June 21, 1984
On June 21, 1984 at about 10:00 pm local time, a Hughes 369HS (helicopter), registered N9124F, was substantially damaged in an accident near Oklahoma City, Oklahoma (Clarence E. Page airport). It was an instructional flight under general aviation rules (Part 91). No one was hurt; 1 person was on board or involved. The weather was visual conditions (good weather).
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The NTSB's probable cause their words, unchanged
The NTSB has not yet published a probable cause for this accident. Investigations usually take one to two years; this page updates when the final report is released.
Source: NTSB aviation accident database, copy made October 4, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- June 21, 1984 · about 10:00 pm local time
- Place
- Oklahoma City, Oklahoma · Clarence E. Page
- Type
- Accident
- Injuries
- No one was hurt; 1 person was on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Hughes 369HS · all 369HSs on the register
- Registration
- N9124F · registry record · serial 520383S
- Damage
- Substantial damage
- Flight
- Instructional flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
WHILE PERFORMING A PRACTICE AUTOROTATION PLT FAILED TO BRING IN POWER IN TIME TO ARREST THE HIGH RATE OF DESCENT. THE HELICOPTER TOUCHED DOWN HARD AND THE MAIN ROTOR BLADES FLEXED DOWNWARD STRIKING THE TAIL BOOM AND SEVERING IT. THE PLT STATED HIS FAILURE TO ADD POWER WAS DUE TO HIS BEING FATIGUED. THE PILOT HAD FLOWN EIGHT HOURS THE DAY OF THE ACCIDENT AND STATED IT WAS EXTREMELY HOT THAT DAY.
The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.
The factual record from the NTSB's investigation tables, in plain English
Pilot
- Certificate: private
- Ratings: multi-engine land; single-engine land; instrument: airplane
- Flight time: 2,250 hours in all; 26 in this make and model; 45 in the last 90 days; 2,000 as pilot in command
- Medical certificate: Class 3 (valid medical--no waivers/lim.)
- Seat: unk
The aircraft
- Airframe total time: 2,800 hours
- Last inspection: 100-hour inspection, June 15, 1984
- Maximum gross weight: 2,400 lb
- Seats: 4
- Landing gear: fixed
- Engine: Allison 250-C20 (turboshaft); 0 hours total
The flight
- Flight plan: none
- Runway 0
Weather at the time
- Light: daylight
- Wind: from 190° at 12 knots
- Sky: scat at 10,000 ft
- Temperature: 91°F (33°C), dew point 63°F (17°C)
- Altimeter: 29.00 inHg
- Observation at 9:45 pm from OKC
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 1 |
About this page
Everything above comes from the NTSB's public accident database: the narrative, probable cause and findings are the NTSB's own words, and the coded tables behind its report (pilot, aircraft, flight, weather, injuries, sequence of events) are written out in plain English. Pilots' ages, home towns and medical details are left out on purpose. The docket at the NTSB holds the report as a PDF and the investigation's photographs and documents. This site never names pilots, passengers or anyone else involved. A preliminary report describes what is known soon after the event and can change; the final report, with the probable cause, usually follows one to two years later and this page is refreshed when it does. Case number FTW84LA283.