Rockwell 112TC N30MT
7 August 1992 · Winner, South Dakota, United States · Minor injuries
Summary
On 7 August 1992 at about 18:50 local time, a Rockwell 112TC registered N30MT, operated by Duane T. Brooks, was involved in an accident near Winner, South Dakota, United States. 3 people were on board and 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 18:50
- Classification
- Accident
- Location
- Winner, South Dakota, United States
- Nearest airport
- Bob Wiley Field (SD39)
- Coordinates
- 43.3704, -99.8509
- Aircraft
- Rockwell 112TC
- Registration
- N30MT
- Category
- Airplane
- Engines
- 1
- Operator
- Duane T. Brooks
- Operating rule
- Part 91: General Aviation
- Purpose of flight
- Personal
- Phase of flight
- Not recorded
- Route
- Beatrice → Winner
- Aircraft damage
- Substantial
- Weather
- VMC
- Light
- Day
- NTSB number
- CHI92LA236
People
3 people had minor injuries.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 3 | 0 | 0 | 3 | 0 |
Probable cause
FAILURE OF THE CARBURETOR MIXTURE CONTROL, RESULTING IN LOSS OF ENGINE POWER. A FACTOR RELATED TO THE ACCIDENT WAS: LACK OF COMPLIANCE WITH MARVEL-SCHEBLER SERVICE BULLETIN (SB) #A1-78.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
DRG A LNDG GO-AROUND, THE ENG BGN RUNNING ROUGH, THEN LOST PWR. AN ATTEMPT WAS MADE TO MAKE AN EMERG LNDG ON A ROAD ADJACENT TO THE ARPT, BUT THE ACFT HIT A FENCE & AN EMBANKMENT BEFORE REACHING IT. AN INV REVEALED THE LOSS OF POWER WAS DUE TO A MALFUNCTION OF THE ENG'S MARVEL-SCHEBLER MODEL HA-6 CARBURETOR (CARB). EXCESSIVE WEAR OF THE SHAFT RETAINING SCREW ALLOWED MISPOSITIONING OF THE CARB'S ROTARY MIXTURE CONTROL (PN 242-541) AND BLOCKAGE OF FUEL FLOW. IN SEP 78, MARVEL-SCHEBLER/TILLOTSON (ORIGINAL MANUFACTURER OF THE CARB) ISSUED SVC BULLETIN (SB) #A1-78, BUT IT HAD NOT BEEN ACCOMPLISHED. THE SB PROVIDES FOR INSTLN OF A SPRING RETAINER (PN 55-A239) TO COUNTERACT END-PLAY WEAR ON THE MIXTURE CONTROL ASSEMBLY & RETAINING SCREW DUE TO VIBRATION. THE SPRING RETAINER ALSO SERVES AS AN ADNL MEANS OF RETAINING THE ROTARY MIXTURE CONTROL, EVEN IF THE EXISTING SHAFT RETAINING SCREW IS WORN OR BKN. THE ENG HAD A TOTAL FLT TIME OF 1065 HRS & 27 HRS SINCE THE LAST INSPN.
Quoted verbatim from the NTSB record.
Other Rockwell 112 accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 31 Jul 1992 | Rockwell 112TC | Glendale, Arizona, United States | Kevin D. Nielsen | No injuries | - |
| 9 Aug 1992 | Rockwell 112-TC | St Mary's, West Virginia, United States | Sherman D. Taffel | Minor injuries | - |
| 16 Oct 1991 | Rockwell 112YC | Detroit, Michigan, United States | Raymond A. Pedersen | No injuries | - |
| 7 Apr 1991 | Rockwell 112TCA | Burbank, California, United States | WM Baxter/Richard Purvis | Minor injuries | - |
| 18 Mar 1991 | Rockwell 112B | Nederland, Colorado, United States | Berger, Henry M. & June H. | Serious injuries | - |
| 18 May 1993 | Rockwell 112TC | Destin, Florida, United States | Adamyk, Emil | No injuries | - |
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 19 Jan 1992 | Cessna 172 | Union Center, South Dakota, United States | - | No injuries | - |
| 29 Dec 1992 | Beechcraft B90 | Sioux Falls, South Dakota, United States | Sioux Valley Hospital Assn. | No injuries | - |
| 19 Mar 1992 | Bellanca 7 GCBC | Quinn, South Dakota, United States | Baye and Sons, Inc. | Minor injuries | - |
| 29 Apr 1992 | Bellanca 8GCBC | Sioux Falls, South Dakota, United States | American Aerial Advertising | No injuries | - |
| 9 Aug 1992 | MBB BO-105 | Madison, South Dakota, United States | Rocky Mountain Helicopters | Minor injuries | - |
| 18 May 1992 | Piper PA-25-235 | Iroquois, South Dakota, United States | Drew Dale Metter | Fatal | 1 |