Crash of a Rockwell Aero Commander 685 in Kansas City: 4 killed

Date & Time: Sep 4, 1981 at 1645 LT
Registration:
N777MM
Flight Phase:
Flight Type:
Survivors:
No
Schedule:
Kansas City - Rapid City
MSN:
685-12030
YOM:
1973
Crew on board:
1
Crew fatalities:
Pax on board:
3
Pax fatalities:
Other fatalities:
Total fatalities:
4
Captain / Total flying hours:
4640
Circumstances:
After takeoff from Kansas City Airport, while climbing, the airplane suffered an engine failure. The airplane lost height and entered a spin then crashed in a field, bursting into flames. All four occupants were killed.
Probable cause:
Stall and subsequent crash after engine structure failed. The following contributing factors were reported:
- Lack of lubrication - specifica part, not system,
- Oil starvation,
- The pilot failed to follow approved procedures,
- Improper emergency procedures,
- Inadequate preflight preparation,
- Improperly loaded aircraft,
- Complete engine failure one engine,
- N° 4, 5, 6 main engine bearings, n°1, 2, 6 rod bearings and front prop shaft bearing failed,
- Approximately 400 lbs over max gross weight.
Final Report:

Crash of a Rockwell Aero Commander 685 in Wrens: 5 killed

Date & Time: Aug 14, 1981 at 1211 LT
Registration:
N8007H
Flight Phase:
Survivors:
No
Schedule:
Ocala – Stuart – Beech Mountain
MSN:
685-12048
YOM:
1973
Location:
Crew on board:
1
Crew fatalities:
Pax on board:
4
Pax fatalities:
Other fatalities:
Total fatalities:
5
Captain / Total flying hours:
12000
Captain / Total hours on type:
330.00
Circumstances:
En route from Stuart to Beech Mountain, North Carolina, while in cruising altitude, the twin engine airplane went out of control. It entered an uncontrolled descent and crashed near Wrens, Georgia. The aircraft was destroyed upon impact and all five occupants were killed.
Probable cause:
Uncontrolled descent and subsequent crash due to inadequate maintenance and supervision. The following contributing factors were reported:
- Powerplant - exhaust system: stacks, poor weld,
- Air condition, heating and pressurization system: loose, part/fitting, leak/leakage,
- PIlot incapacitation due to hypoxia,
- The aircraft did not flew ATC direction,
- Pilot blood concentration level 32%,
- Exhaust riser failed,
- Bleed-air elbow loose.
Final Report:

Crash of a Rockwell Aero Commander 685 in Ashland: 1 killed

Date & Time: Dec 12, 1980 at 1845 LT
Registration:
N9221N
Flight Phase:
Survivors:
Yes
Schedule:
Ashland - Fresno
MSN:
685-12033
YOM:
1973
Location:
Crew on board:
1
Crew fatalities:
Pax on board:
4
Pax fatalities:
Other fatalities:
Total fatalities:
1
Captain / Total flying hours:
6100
Circumstances:
After takeoff from Ashland-Parker Airport, the twin engine airplane encountered difficulties to maintain a positive rate of climb and crashed on a hill. The pilot was killed while four other occupants were injured.
Probable cause:
Controlled collision with ground during initial climb after the pilot failed to establish a positive rate of climb. The following contributing factors were reported:
- Low ceiling,
- Fog,
- Visibility 1/4 mile or less.
Final Report:

Crash of a Rockwell Aero Commander 685 in Tokyo: 2 killed

Date & Time: Aug 10, 1980
Registration:
JA5231
Flight Phase:
Survivors:
No
MSN:
685-12056
YOM:
1973
Country:
Region:
Crew on board:
1
Crew fatalities:
Pax on board:
1
Pax fatalities:
Other fatalities:
Total fatalities:
2
Circumstances:
Crashed on takeoff for unknown reasons, killing both occupants.