ASN Wikibase Occurrence # 135493
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| Date: | Sunday 30 November 1986 |
| Time: | 11:35 |
| Type: |  Robinson R-22 |
| Owner/operator: | Arizona Wing & Rotor |
| Registration: | N9006W |
| MSN: | 0004 |
| Year of manufacture: | 1979 |
| Total airframe hrs: | 1559 hours |
| Engine model: | LYCOMING O-320-B2C |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Tucson, Arizona -
 United States of America
|
| Phase: | Landing |
| Nature: | Training |
| Departure airport: | Scottsdale, Arizona (SDL/KSDL) |
| Tuscon, Arizona (TUS/KTUS) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Information is only available from news, social media or unofficial sources |
AFTER 50 MINUTES OF CRUISE FLIGHT, THE PILOT OBSERVED A DECREASE IN OIL PRESSURE TO ZERO AND THE ILLUMINATION OF THE LOW OIL PRESSURE LIGHT. THE PILOT LANDED THE HELICOPTER AND HAD AN AIR FRAME AND POWER PLANT MECHANIC INSPECT THE AIRCRAFT. THERE WERE NO PROBLEMS OBSERVED. THE PILOT TOOK OFF AND CONTINUED THE INSTRUCTIONAL FLIGHT, LETTING HIS STUDENT TAKE OVER THE CONTROLS. AFTER 20 MINUTES OF NORMAL OPERATION AND ON FINAL APPROACH FOR LANDING AT 75 FEET AGL AND 50 KNOTS, THE LOW OIL PRESSURE LIGHT ILLUMINATED. THE ENGINE STOPPED RUNNING. THE INSTRUCTOR TOOK OVER CONTROL OF THE AIRCRAFT AND ATTEMPTED AN AUTO ROTATION. THE AIRCRAFT COLLIDED WITH THE TERRAIN AT AN AIRSPEED OF 35 TO 40 KNOTS. A TEAR DOWN OF THE ENGINE REVEALED THAT THE NUMBER TWO CONNECTING ROD HAD FAILED.
Sources:
1. NTSB Identification: LAX87DUJ01 at https://www.ntsb.gov/aviationquery/brief.aspx?ev_id=20001213X35179&key=1
2. FAA: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?omni=Home-N-Number&nNumberTxt=9006W
3. http://www.griffin-helicopters.co.uk/accidentdetails.aspx?accidentkey=35656
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 08-Feb-2016 12:21 | Dr.John Smith | Updated [Time, Cn, Departure airport, Destination airport, Source, Narrative] |
| 08-Feb-2016 12:22 | Dr.John Smith | Updated [Source] |
| 18-Sep-2016 20:01 | Dr.John Smith | Updated [Location, Departure airport, Destination airport] |
| 21-Dec-2016 19:26 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
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