ASN Wikibase Occurrence # 366281
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| Date: | Wednesday 29 August 1990 |
| Time: | 14:50 LT |
| Type: | Air & Space 18A |
| Owner/operator: | Faa (btr Fsdo) |
| Registration: | N6132S |
| MSN: | 18-39 |
| Total airframe hrs: | 1004 hours |
| Engine model: | LYCOMING O-360-A1D |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Shreveport, LA -
 United States of America
|
| Phase: | Take off |
| Nature: | Private |
| Departure airport: | (KSHV) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PIC STATED THAT AT LIFTOFF A SEVERE LATERAL VIBRATION OCCURRED CAUSING LOSS OF CONTROL OF THE GYROPLANE. WITNESSES REPORTED AN ERRATIC PORPOISING PITCHING MOTION. THE AIRCRAFT CAME TO REST APPROXIMATELY 1,500 FEET AFTER CONTROL WAS LOST, WHICH WAS AT THE POINT OF ATTEMPTED LIFTOFF. AS A RESULT OF FLAPPING, TWO OF THE THREE ROTOR BLADES CONTACTED THE PROPELLER AND RUDDER. ALTHOUGH NOT RECOMMENDED BY THE MANUFACTURER, THE FRONT SEAT WAS OCCUPIED BY A PILOT RATED PASSENGER WITH NO GYROPLANE EXPERIENCE. DURING SUBSEQUENT FLIGHT TESTING, TAKEOFF WAS PERFORMED UNDER SIMILAR CONDITIONS. IMPROPER TECHNIQUES DURING ATTEMPTED LIFTOFF RESULTED IN ERRATIC OSCILLATION AND ROTOR RPM DECAY. NO MECHANICAL MALFUNCTION WAS DISCOVERED.
Probable Cause: FAILURE OF THE PILOT IN COMMAND TO FOLLOW PUBLISHED TAKEOFF PROCEDURES.
Accident investigation:
 |
|
Sources:
NTSB FTW90FA170
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 20-Mar-2024 19:20 | ASN Update Bot | Added |
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