Beechcraft BE-35M N1ZY
28 April 1990 · Tomball, Texas, United States · No injuries
Summary
On 28 April 1990 at about 19:41 local time, a Beechcraft BE-35M registered N1ZY, operated by Davis, Harold E., was involved in an accident near Tomball, Texas, United States. One person was on board and nobody was injured. 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 19:41
- Classification
- Accident
- Location
- Tomball, Texas, United States
- Nearest airport
- David Wayne Hooks (DWH)
- Coordinates
- 30.0896, -95.6098
- Aircraft
- Beechcraft BE-35M
- Registration
- N1ZY
- Category
- Airplane
- Engines
- 1
- Operator
- Davis, Harold E.
- Operating rule
- Part 91: General Aviation
- Purpose of flight
- Personal
- Phase of flight
- Not recorded
- Aircraft damage
- Substantial
- Weather
- VMC
- Light
- Day
- NTSB number
- FTW90LA103
People
Nobody was injured.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 1 | 0 | 0 | 0 | 1 |
Probable cause
AN ENGINE FAILURE DUE TO DETONATION AND SUBSEQUENT PISTON OVERTEMPERATURE AND EROSION. A FACTOR RELATED TO THE ACCIDENT WAS THE LACK OF SUITABLE TERRAIN.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
THE AIRPLANE WAS DAMAGED WHEN IT COLLIDED WITH A FENCE AND A DITCH DURING A FORCED LANDING FOLLOWING A COMPLETE ENGINE FAILURE. INVESTIGATION REVEALED THAT THE NO. 5 PISTON WAS SEVERELY HEAT ERODED WITH PIECES MISSING. THE EROSION ALLOWED EXHAUST VENTING (BLOW BY) INTO THE CASE. THERE WAS SOME EVIDENCE OF PRE-IGNITION ON THE OTHER PISTONS' BUT NOT TO THE EXTENT AS ON NO. 5. IT WAS DETERMINED THAT THE ENGINE WAS 17 HOURS OUT OF A MAJOR OVERHAUL AND HAD BEEN USING AUTO GAS AT THE TIME OF THE ACCIDENT. IT APPEARED THAT THE PISTON EROSION HAD OCCURRED OVER A LONG PERIOD OF TIME.
Quoted verbatim from the NTSB record.
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 19 Mar 1990 | Bell 206B | Pearland, Texas, United States | Houston Helicopter, Inc | Serious injuries | - |
| 17 Mar 1990 | Cessna 172G | Rio Hondo, Texas, United States | - | No injuries | - |
| 28 Mar 1990 | Beechcraft 100 | Uvalde, Texas, United States | - | Serious injuries | - |
| 3 Apr 1990 | Hughes H500C | Houston, Texas, United States | Mark R. Lancaster | No injuries | - |
| 15 Apr 1990 | Hughes 369HS | Junction, Texas, United States | Neveri, Inc. | No injuries | - |
| 16 Apr 1990 | Cessna 152 | Albany, Texas, United States | - | No injuries | - |