ASN Wikibase Occurrence # 39395
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| Date: | Friday 5 July 1991 |
| Time: | 16:39 LT |
| Type: |  Robinson R22B |
| Owner/operator: | Skyview Traffic Watch |
| Registration: | N23039 |
| MSN: | 1846 |
| Year of manufacture: | 1991 |
| Engine model: | Lycoming O-320-B2C |
| Fatalities: | Fatalities: 1 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Phoenix, Arizona -
 United States of America
|
| Phase: | En route |
| Nature: | Survey |
| Departure airport: | Scottsdale, AZ (KSDL) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
WITNESSES REPORTED OBSERVING THE R22 IN CRUISE FLIGHT BETWEEN 300 & 500 FT AGL WHEN THEY HEARD A LOUD BANG & OBSERVED PIECES FALLING FROM THE HELICOPTER. THE HELICOPTER CRASHED INTO A RESIDENCE & INITIATED A FIRE THAT GUTTED THE INTERIOR OF THE RESIDENCE & DESTROYED THE HELICOPTER WRECKAGE. PIECES OF THE LEFT SKID, WINDSCREEN BUBBLE & THE LEFT DOOR WERE LOCATED 1400 FT FROM THE MAIN WRECKAGE. EXAMINATION OF THE WRECKAGE FOUND NO EVIDENCE OF PREIMPACT MALFUNCTION OR MECHANICAL FAILURE. THE COMMERCIAL PILOT, WHO HAD ACCUMULATED 500 HRS IN THE R22 AND WAS CRUISING TO WORK TO PERFORM HIS AERIAL TRAFFIC WATCH REPORTING DUTIES, WAS FATALLY INJURED. REMNANTS OF MODEL ROCKETS WERE LOCATED IN A VACANT LOT NEAR THE ACCIDENT SITE. THE MODEL ROCKETS WERE CHEMICALLY EXAMINED TO DETERMINE IF A SMUDGE ON THE HELICOPTER WINDSCREEN MATCHED THE RED SURFACE OF THE ROCKETS. THE SMUDGE DID NOT MATCH THE MATERIAL OF THE ROCKETS.
Probable Cause: A DIVERGENCE OF THE MAIN ROTOR FROM ITS NORMAL PLANE OF ROTATION FOR AN UNDETERMINED REASON, WHICH RESULTED IN ROTOR CONTACT TO THE COCKPIT.
Accident investigation:
 |
|
Sources:
NTSB LAX91FA288
FAA register: 2. FAA: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?omni=Home-N-Number&nNumberTxt=23039
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 25-May-2016 13:29 | Dr.John Smith | Updated [Time, Location, Departure airport, Source, Narrative] |
| 25-May-2016 13:29 | Dr.John Smith | Updated [Narrative] |
| 20-Sep-2016 16:34 | Dr.John Smith | Updated [Operator, Departure airport, Destination airport, Source, Narrative] |
| 21-Dec-2016 19:23 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 11-Apr-2024 14:12 | ASN Update Bot | Updated [Time, Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative, Category, Accident report] |
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