ASN Wikibase Occurrence # 27069
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| Date: | Saturday 17 June 1989 |
| Time: | 15:00 |
| Type: |  Cessna 421 Golden Eagle |
| Owner/operator: | W.E.Hamilton |
| Registration: | N421S |
| MSN: | 421-0063 |
| Year of manufacture: | 1968 |
| Total airframe hrs: | 5070 hours |
| Engine model: | CONTINENTAL GTSIO-520 |
| Fatalities: | Fatalities: 0 / Occupants: 4 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Pinal Airpark, 7nm NW of Picacho, Arizona -
 United States of America
|
| Phase: | Initial climb |
| Nature: | Private |
| Departure airport: | Pinal Airpark, Picacho. Arizona (MZJ/KMZJ) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE LEFT ENGINE LOST POWER JUST AFTER TAKEOFF. WITH THE GEAR AND FLAPS RETRACTED AND THE LEFT PROPELLER FEATHERED, THE AIRPLANE WOULD CLIMB SLIGHTLY. AS IT PASSED OVER GREEN FIELDS, THE AIRPLANE STARTED A DESCENT. THE AIRPLANE TOUCHED DOWN IN A COTTON FIELD AND THE LEFT TIP TANK BURST INTO FLAMES AS IT TOUCHED THE GROUND. THE AIRPLANE WAS CONSUMED BY FIRE.
ENGINE TEAR DOWN REVEALED THE NUMBER THREE EXHAUST VALVE FAILED. ELEVATION OF THE ACCIDENT WAS 1,600 FEET MST, OAT [OUTSIDE AIR TEMPERATURE] WAS 114 DEGREES F. DENSITY ALTITUDE WAS APPROXIMATELY 5,600 FEET.
The National Transportation Safety Board determines the probable cause(s) of this accident as follows: FAILURE OF THE NUMBER THREE EXHAUST VALVE ON THE LEFT ENGINE. A MAJOR FACTOR WAS THE HIGH DENSITY ALTITUDE WHERE THE AIRPLANE WOULD NOT OPERATE ON SINGLE ENGINE.
Sources:
1. NTSB Identification: LAX89LA217 at https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20001213X28599&key=1
2. FAA: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=421S
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 27-Sep-2008 01:00 | ASN archive | Added |
| 16-Dec-2016 22:09 | Dr. John Smith | Updated [Cn, Operator, Location, Phase, Nature, Departure airport, Source, Damage, Narrative] |
| 21-Dec-2016 19:14 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 21-Dec-2016 19:16 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 21-Dec-2016 19:20 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
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