ASN Wikibase Occurrence # 35773
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 4 March 1992 |
| Time: | 17:35 LT |
| Type: |  Robinson R22 |
| Owner/operator: | Wesley F. Morris |
| Registration: | N8413Q |
| MSN: | 0354 |
| Total airframe hrs: | 2128 hours |
| Engine model: | Lycoming O-320-B2C |
| Fatalities: | Fatalities: 1 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | 5 miles NE of Estrella Sailport, near Maricopa,Arizona -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | |
| Chandler, AZ (P19) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE WRECKAGE WAS LOCATED ON FLAT DESERT TERRAIN ALONG A DIRECT COURSE LINE BETWEEN THE DEPARTURE & DESTINATION AIRPORTS. THE TAIL BOOM HAD SEPARATED IN FLIGHT. DAMAGE WAS CONSISTENT WITH A LOW 'G' EVENT RESULTING IN A RAPID RIGHT ROLL & SUBSEQUENT MAIN ROTOR BLADE STRIKE ON THE LEFT SIDE OF THE CABIN. THE DESIGN STRENGTH OF THE TAIL CONE'S ATTACHMENT POINTS WAS EXCEEDED. ACCORDING TO THE MANUFACTURER'S PAPER ON LOW 'G' MAST BUMPING, BOTH LATERAL CONTROL AND DAMPING IN ROLL ARE PROPORTIONAL TO G-LOAD; IN A TWO G PULLUP THEY BOTH DOUBLE, AND IN A ZERO G PUSHOVER THEY BOTH GO TO ZERO. WHEN THEY ARE ZERO, THE PILOT HAS NO LATERAL CONTROL, AND THE HELICOPTER HAS NO DAMPING IN ROLL. THE PILOT WAS REPORTEDLY KEENLY AWARE THAT ONE SHOULD NOT PLACE THE R22 INTO A NEGATIVE 'G' SITUATION, OR EVEN A LOW 'G' SITUATION, AND WAS VERY KNOWLEDGEABLE OF THE R22'S STRUCTURE AND SYSTEMS.
Probable Cause: DESTRUCTIVE MAST BUMPING FOR AN UNDETERMINED REASON(S).
Accident investigation:
 |
|
Sources:
NTSB LAX92FA137
FAA register: 2. FAA: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?omni=Home-N-Number&nNumberTxt=8413Q
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 25-May-2016 13:58 | Dr.John Smith | Updated [Time, Operator, Location, Departure airport, Destination airport, Source, Narrative] |
| 25-May-2016 13:58 | Dr.John Smith | Updated [Narrative] |
| 20-Sep-2016 18:18 | Dr.John Smith | Updated [Source] |
| 21-Dec-2016 19:22 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 11-Apr-2024 08:42 | ASN Update Bot | Updated [Time, Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative, Accident report] |
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