ASN Wikibase Occurrence # 42295
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Date: | Saturday 18 May 1991 |
Time: | 16:30 LT |
Type: | Cessna 150J |
Owner/operator: | Bestway Aviation #2 |
Registration: | N1019M |
MSN: | 15070999 |
Engine model: | CONTINENTAL O-200-A |
Fatalities: | Fatalities: 2 / Occupants: 2 |
Aircraft damage: | Destroyed |
Category: | Accident |
Location: | Caney, OK -
United States of America
|
Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
Nature: | Unknown |
Departure airport: | |
Destination airport: | |
Investigating agency: | NTSB |
Confidence Rating: | Accident investigation report completed and information captured |
Narrative:THE PLT & PASSENGER WERE PARTICIPATING IN AN ACTIVITY TO COMPETE IN DROPPING PAPER SACKS OF FLOWER IN A CIRCLE ON THE GROUND AT A FLY-IN. AFTER THE PLT HAD JUST COMPLETED A LOW PASS, WITNESSES NOTED THE ENG BEGAN RUNNING ROUGH, THEN THE ACFT DESCENDED & CRASHED. AN EXAM OF THE WRECKAGE REVEALED THE ACFT HAD IMPACTED IN A STEEP DESCENT. THE PROP BLADES WERE EQUALLY DISTORTED & BOTH BLADES CONTAINED ROTATIONAL SCUFF MARKS. A TEARDOWN OF THE ENG REVEALED THE #2 CYLINDER HAD A BLOWN EXHAUST MANIFOLD GASKET & THAT ITS RESPECTIVE EXHAUST VALVE WAS STUCK. ALSO, HEAT DAMAGE WAS NOTED ON THE #4 CYLINDER, DUE TO ESCAPING EXHAUST GASES.
Probable Cause: BINDING OF THE #2 EXHAUST VALVE (STUCK VALVE), AND FAILURE OF THE PILOT TO MAINTAIN ADEQUATE AIRSPEED, WHICH RESULTED IN AN INADVERTENT STALL. A FACTOR RELATED TO THE ACCIDENT WAS: THE FAILED EXHAUST MANIFOLD GASKET.
Accident investigation:
|
| |
Investigating agency: | NTSB |
Report number: | FTW91FA081 |
Status: | Investigation completed |
Duration: | 10 months |
Download report: | Final report |
|
Sources:
NTSB FTW91FA081
Location
Revision history:
Date/time | Contributor | Updates |
24-Oct-2008 10:30 |
ASN archive |
Added |
21-Dec-2016 19:24 |
ASN Update Bot |
Updated [Time, Damage, Category, Investigating agency] |
21-Apr-2024 06:28 |
ASN Update Bot |
Updated [Time, Other fatalities, Phase, Source, Narrative, Category, Accident report] |
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