Mason Jack A VELOCITY N157JM
25 November 1992 · Crystal River, Florida, United States · Minor injuries
Summary
On 25 November 1992 at about 20:00 local time, a Mason Jack A VELOCITY registered N157JM, operated by Black, Charles K., was involved in an accident near Crystal River, Florida, 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 20:00
- Classification
- Accident
- Location
- Crystal River, Florida, United States
- Coordinates
- Not recorded
- Aircraft
- Mason Jack A VELOCITY
- Registration
- N157JM
- Category
- Airplane
- Engines
- 1
- Operator
- Black, Charles K.
- Operating rule
- Part 91: General Aviation
- Purpose of flight
- Personal
- Phase of flight
- Not recorded
- Route
- Louisville → Sarasota
- Aircraft damage
- Substantial
- Weather
- VMC
- Light
- Day
- NTSB number
- MIA93LA022
People
2 people had minor injuries.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 2 | 0 | 0 | 2 | 0 |
Probable cause
FAILURE OF AN UNKNOWN INDIVIDUAL TO DETERMINE THAT THE PROPELLER WAS PROPERLY SECURED AFTER REMOVAL OF THE PROPELLER SPINNER, RESULTING IN SEPARATION OF ONE OF THE PROPELLER BLADES DURING CRUISE FLIGHT. CONTRIBUTING TO THE ACCIDENT WAS UNSUITABLE TERRAIN ENCOUNTERED DURING THE FORCED LANDING.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
DURING CRUISE FLT, APRX 17 INCHES OF ONE PROP BLADE SEPARATED. DURING THE EMERGENCY DESCENT FOR A FORCED LANDING, THE ACFT COLLIDED WITH TREES THEN THE WATER. EXAM OF THE PROP REVEALED THAT THE FWD HUB WHICH CONTACTS THE FWD MOUNTING FLANGE WAS BURNED. A PROP SPINNER WAS NOT INSTALLED. IT HAD BEEN REMOVED BEFORE THE PLT PURCHASED THE ACFT APRX 9 MONTHS EARLIER. THE PROP SPINNER BACKING PLATE WHICH IS .125 INCH THICK ATTACHES BETWEEN THE FWD MOUNTING FLANGE AND THE FWD HUB OF THE PROP. THE CORRECT PROCEDURE TO DETERMINE IF THE ATTACH BOLTS ARE THE CORRECT LENGTH IS TO INSTALL THEM THROUGH THE AFT MOUNTING FLANGE & THE PROPELLER BACKING PLATE (IF INSTALLED), THEN SCREW THEM INTO THE FWD MOUNTING FLANGE UNTIL THE BOLTS BOTTOM OUT. THE WIDTH BETWEEN THE TWO FLANGES (IF A PROP SPINNER IS NOT INSTALLED) SHOULD BE MEASURED, THEN THE WIDTH OF THE PROP HUB SHOULD BE MEASURED. THE WIDTH OF THE PROP HUB SHOULD BE GREATER THAN THE WIDTH BETWEEN THE FLANGES TO ALLOW FOR COMPRESSION OF THE HUB WHEN THE BOLTS ARE PROPERLY TORQUED.
Quoted verbatim from the NTSB record.
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 8 Feb 1992 | Cessna 150M | Stuart, Florida, United States | Flight Training International | No injuries | - |
| 9 Feb 1992 | Burch ROTORWAY EXEC | Lakeland, Florida, United States | Ronald W.case | No injuries | - |
| 9 Feb 1992 | Piper PA-32-260 | Kissimmee, Florida, United States | Perman, William | No injuries | - |
| 10 Feb 1992 | Piper PA-28-161 | New Smyrna Bch, Florida, United States | ACS, Inc. | No injuries | - |
| 21 Feb 1992 | Cessna 172N | Orlando, Florida, United States | Flight Express, Inc. | No injuries | - |
| 8 Feb 1992 | Cessna 152 | Perry, Florida, United States | Comair Aviation Academy | No injuries | - |