Beechcraft 35-C33 N24TH
10 November 1998 · Tulsa, Oklahoma, United States · Serious injuries
Summary
On 10 November 1998 at about 19:45 local time, a Beechcraft 35-C33 registered N24TH, operated by Walter R Brown, was involved in an accident near Tulsa, Oklahoma, United States. 4 people were on board and one was seriously injured, 3 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 19:45
- Classification
- Accident
- Location
- Tulsa, Oklahoma, United States
- Coordinates
- 36.0501, -96.0200
- Aircraft
- Beechcraft 35-C33
- Registration
- N24TH
- Category
- Airplane
- Engines
- 1
- Operator
- Walter R Brown
- Operating rule
- Part 91: General Aviation
- Purpose of flight
- Personal
- Phase of flight
- Not recorded
- Route
- Unknown → Kansas City
- Aircraft damage
- Substantial
- Weather
- VMC
- Light
- Day
- NTSB number
- FTW99LA023
People
1 person was seriously injured.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 4 | 0 | 1 | 3 | 0 |
Probable cause
The loss of engine power due to detonation for undetermined reasons. A factor was the lack of suitable terrain for the forced landing.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
The aircraft's engine lost power due to severe detonation shortly after takeoff. During the ensuing forced landing on a road, the airplane collided with trees and the road median. The pilot stated that he had leaned the mixture during climb to 30 gallons per hour because the fuel flow gauge was indicating 'red line of about 35 gallons per hour.' During the climb, the engine RPM started to 'over speed.' The pilot stated that he attempted to reduce engine RPM with the propeller control then subsequently with the throttle; however, the engine 'quit.' Examination of the engine revealed that all of the cylinders showed signs of severe overheating and characteristics of lean mixture operation and detonation. According to the performance charts, the fuel flow should have been set to approximately 20.5 gallons per hour. The complete engine fuel system was bench checked revealing no anomalies that would have prevented normal operation of the engine. Post-accident testing of the fuel flow gauge revealed that the gauge operated correctly and indicated fuel flow properly.
Quoted verbatim from the NTSB record.
Other Beechcraft 35 accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 24 Jul 1998 | Beechcraft 35 | Temecula, California, United States | - | Minor injuries | - |
| 1 Apr 1998 | Beechcraft 35-C33 | Hillsboro, Oregon, United States | - | No injuries | - |
| 19 Sep 1998 | Beechcraft 35-B33 | San Jose, California, United States | - | Fatal | 2 |
| 9 Feb 1999 | Beechcraft 35 | Lincoln, Nebraska, United States | - | Minor injuries | - |
| 7 Sep 1997 | Beechcraft 35-C33A | Amana, Iowa, United States | - | No injuries | - |
| 29 Apr 1997 | Beechcraft 35 | Spokane, Washington, United States | - | No injuries | - |
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 8 Jan 1998 | Cessna 340A | Bethany, Oklahoma, United States | Sierra Aviation, Inc. | No injuries | - |
| 28 Jan 1998 | Cessna 340 | Wagoner, Oklahoma, United States | - | No injuries | - |
| 29 Jan 1998 | Piper PA-28R-201T | Lone Grove, Oklahoma, United States | - | Serious injuries | - |
| 3 Feb 1998 | Piper PA-22-108 | Frederick, Oklahoma, United States | - | No injuries | - |
| 20 Feb 1998 | Cessna 152 | Norman, Oklahoma, United States | Airman Flight School | No injuries | - |
| 1 Mar 1998 | Cessna 172K | Marietta, Oklahoma, United States | - | Serious injuries | - |