Beechcraft F33A N1568A
24 October 1990 · Mobile, Arizona, United States · Minor injuries
Summary
On 24 October 1990 at about 17:54 local time, a Beechcraft F33A registered N1568A was involved in an accident near Mobile, Arizona, United States. 2 people were on board and 2 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 17:54
- Classification
- Accident
- Location
- Mobile, Arizona, United States
- Nearest airport
- Auxiliary (1AZ0)
- Coordinates
- Not recorded
- Aircraft
- Beechcraft F33A
- Registration
- N1568A
- Category
- Airplane
- Engines
- 1
- Operator
- Not recorded
- Operating rule
- Part 91: General Aviation
- Purpose of flight
- Unknown
- Phase of flight
- Not recorded
- Route
- Goodyear → Unknown
- Aircraft damage
- Substantial
- Weather
- VMC
- Light
- Day
- NTSB number
- LAX91LA017
People
2 people had minor injuries.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 2 | 0 | 0 | 2 | 0 |
Probable cause
A FUEL FLOW INTERRUPTION DUE TO A FUEL SYSTEM SEAL FRAGMENT BECOMING LODGED IN THE FUEL CONTROL UNIT AND THE MANUFACTURER'S INADEQUATE QUALITY CONTROL PROCEDURES.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
THE AIRCRAFT WAS IN THE MAINTENANCE SHOP FOR CORRECTION OF A ROUGH RUNNING ENGINE AT CLIMB POWER, WITH ACCOMPANYING FUEL FLOW FLUCTUATIONS. THE MAINTENANCE DEPARTMENT REPLACED THE FUEL PUMP, FLOW DIVIDER AND THE ENGINE SPARK PLUGS. THE ACCIDENT FLIGHT WAS A POST MAINTENANCE TEST FLIGHT TO APPROVE THE AIRCRAFT FOR RETURN TO SERVICE. THE AIRPLANE WAS ON THE SECOND TOUCH AND GO DEPARTURE WHEN THE ENGINE QUIT AND AIRCRAFT COLLIDED WITH THE GROUND DURING THE ATTEMPTED FORCED LANDING. THE ENGINE WAS TEST RUN USING THE COMPONENTS IN THE AIRCRAFT AND WOULD ONLY RUN VERY ROUGH AT NO HIGHER THAN 1400 RPM. AN OBSTRUCTION WAS FOUND IN THE FUEL CONTROL UNIT. OPTICAL EXAMINATION OF THE FOREIGN OBJECT REVEALED THAT IT WAS SIMILAR IN COMPOSURE, COLOR AND TEXTURE TO FUEL SYSTEM SEAL MATERIAL. THE ENGINE WAS MANUFACTURED IN JULY OF 1990 AND INSTALLED IN THE AIRFRAME ON AUGUST 14, 1990. THE FUEL CONTROL UNIT WAS SUPPLIED BY CONTINENTAL ALREADY INSTALLED ON THE ENGINE. AS OF THE ACCIDENT, THE ENGINE HAD ACCURED A TOTAL TIME OF 256 HOURS.
Quoted verbatim from the NTSB record.
Other Beechcraft F33A accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 15 Dec 1990 | Beechcraft F33A | Lakeland, Florida, United States | Globe Aero Ltd. | No injuries | - |
| 20 Apr 1990 | Beechcraft F33A | Milwaukee, Wisconsin, United States | Delta Delta Partnership | Minor injuries | - |
| 3 Jun 1990 | Beechcraft F33A | Port Clinton, Ohio, United States | - | No injuries | - |
| 12 Apr 1990 | Beechcraft F33A | Yuba City, California, United States | Steven E. Carnes | No injuries | - |
| 13 Jul 1989 | Beechcraft F33A | Waterville, Maine, United States | Richard Sommers | No injuries | - |
| 27 Mar 1989 | Beechcraft F33A | Lamar, Colorado, United States | Ruth M. Davis | No injuries | - |
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 24 Apr 1990 | Piper PA-28-161 | Chandler, Arizona, United States | Chandler Air Service | No injuries | - |
| 26 Apr 1990 | Cessna 120 | Phoenix, Arizona, United States | James R. Ohlin | No injuries | - |
| 7 Jun 1990 | Bellanca 8KCAB | Phoenix, Arizona, United States | Kindel, Charles E. | Fatal | 1 |
| 30 Apr 1990 | Cessna 182L | Bullhead City, Arizona, United States | Unregistered | No injuries | - |
| 1 May 1990 | Piper PA30 | Sedona, Arizona, United States | Haaf, TOM | No injuries | - |
| 1 Nov 1990 | Cessna 152 | Maricopa, Arizona, United States | Sawyer Aviation | No injuries | - |