Cessna 150M N7814U
19 October 1997 · Miami, Florida, United States · Minor injuries
Summary
On 19 October 1997 at about 14:30 local time, a Cessna 150M registered N7814U, operated by William B. Tinkham, was involved in an accident near Miami, Florida, United States. 2 people were on board and one had minor injuries. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.
The record
- Date
- at 14:30
- Classification
- Accident
- Location
- Miami, Florida, United States
- Coordinates
- 25.7602, -80.1406
- Aircraft
- Cessna 150M
- Registration
- N7814U
- Category
- Airplane
- Engines
- 1
- Operator
- William B. Tinkham
- Operating rule
- Part 91: General Aviation
- Purpose of flight
- Personal
- Phase of flight
- Not recorded
- Route
- Unknown → Marathon
- Aircraft damage
- Substantial
- Weather
- VMC
- Light
- Day
- NTSB number
- ATL98LA003
People
1 person had minor injuries.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 2 | 0 | 0 | 1 | 1 |
Probable cause
excessive wear to the number one valve stem and valve stem keepers that resulted in the separation of the valve assembly.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
About 10 minutes into the flight, at a cruise altitude of 1000 feet, the pilot experienced a loss of engine power. He radioed a 'mayday' call and selected a nearby golf course for an emergency landing. The airplane collided with a palm tree during the emergency landing roll. Examination of the engine assembly revealed that number one cylinder lower spark plug was partially separated from the cylinder. During the subsequent engine teardown, the number one exhaust valve head was recovered from inside the cylinder. The examination also of the exhaust valve stem and the and the valve stem keepers showed excessive wear. The valve stem keepers had also separated from their normally installed positions. A review of the aircraft maintenance logs disclosed that the engine had undergone several major engine repairs, involving the valve assemblies, within the last ten years. An engine top overhaul was completed 370 hours before this accident. The engine had accumulated a total of 5,603 hours.
Quoted verbatim from the NTSB record.
Other Cessna 150 accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 18 Apr 1997 | Cessna 150M | Ormond Beach, Florida, United States | - | No injuries | - |
| 19 Apr 1997 | Cessna 150G | Raleigh, North Carolina, United States | - | No injuries | - |
| 20 Feb 1997 | Cessna 150 | Clarksville, Maryland, United States | - | No injuries | - |
| 22 Jul 1997 | Cessna 150L | Portland, Tennessee, United States | - | Serious injuries | - |
| 5 Apr 1997 | Cessna 150E | Wolfeboro, New Hampshire, United States | - | No injuries | - |
| 16 May 1997 | Cessna 150K | Ball Ground, Georgia, United States | Firefox Aviation, Inc. | Minor injuries | - |
All 10,427 records for this type
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 10 Apr 1997 | Cessna 152 | La Crosse, Florida, United States | - | No injuries | - |
| 10 Apr 1997 | Navion A | Quincy, Florida, United States | - | No injuries | - |
| 13 Apr 1997 | Diamond DA 20-A1 | Hollywood, Florida, United States | Pelican Airways | No injuries | - |
| 15 Jul 1997 | Cessna 172N | Lakeland, Florida, United States | - | No injuries | - |
| 19 Jul 1997 | Bellanca 8GCBC | Bunnell, Florida, United States | - | Minor injuries | - |
| 19 Apr 1997 | Young MERLIN GT | Fort Myers, Florida, United States | - | Fatal | 1 |