ASN Wikibase Occurrence # 369012
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information.
If you feel this information is incomplete or incorrect, you can submit corrected information.
| Date: | Wednesday 29 March 1989 |
| Time: | 18:00 LT |
| Type: | Lee, David VELOCITY |
| Owner/operator: | Lee, David |
| Registration: | N81VA |
| MSN: | DM0043 |
| Total airframe hrs: | 110 hours |
| Engine model: | LYCOMING IO-360 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Ponte Vedra Bch, FL -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Unknown |
| Departure airport: | St. Augustine, FL (KSGJ) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE EXPERIMENTAL AMATEUR-BUILT ACFT WAS ON A TEST FLT AT 10,000 FT TO PERFORM SOME MANEUVERS WITH THE CG AT THE MOST REARWARD LIMITS. THE ACFT WAS PLACED INTO AN 'AGGRAVATED STALL' DURING WHICH THE ACFT ENTERED A 'DEEP STALL'. ALL CONVENTIONAL & UNCONVENTIONAL MEANS OF REGAINING CONTROL OF THE ACFT, INCLUDING THE PLT CLIMBING OUT OF THE COCKPIT & LEANING AS FAR FWD AS POSSIBLE, FAILED TO RECOVER CONTROL OF THE ACFT. AT ONE POINT, THE PLT CONSIDERED BAILING OUT, BUT CHANGED HIS MIND DUE TO THE ZERO BANK, ZERO FWD SPEED, ZERO YAW & SLOW DESCENT TOWARD THE OCEAN. AFTER THE HARD VERTICAL IMPACT, THE PLT RELEASED HIS HARNESS & STEPPED INTO THE WATER. THE ACFT WAS RECOVERED & AN EXAM REVEALED THAT THE CANARD GAP SEALS WHICH HAD BEEN INSTALLED TO ENHANCE PITCH AUTHORITY OF THE CANARD ON THE PREV FLT, WERE STILL IN PLACE DUE TO AN OVERSIGHT. WITH THE GAP SEALS INSTALLED, THE CANARD PITCH AUTHORITY EXCEEDED THE AUTHORITY OF THE WING.
Probable Cause: FAILURE THROUGH AN OVERSIGHT TO REMOVE THE CANARD GAP SEALS PRIOR TO AGGRAVATED STALL TESTING WHICH RESULTED IN THE AIRCRAFT ENTERING AN UNCONTROLLABLE FLIGHT REGIME.
Accident investigation:
 |
|
Sources:
NTSB MIA89LA117
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Mar-2024 09:53 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
The Aviation Safety Network is an exclusive service provided by:
Quick Links:
| ASN Home | Send Correction / Feedback |
| FSF Home | Disclaimer | Copyright |
| Contact Us | Privacy Policy |
| Press / Media |
CONNECT WITH US:
©2024 Flight Safety Foundation