Individually Owned: 150,657
Corporate Owned: 137,281
Jackson-Evers Int'l Airport
Aircraft Accident/Incident Report
Jackson, Mississippi 39208
Saturday, January 28, 2012 17:05 CST
NTSB Narrative Summary Released at Completion of Accident
According to the pilot, he conducted a thorough preflight inspection of the airplane with no anomalies noted. Then, when the airplane was at an altitude of 7,000 feet mean sea level, an extreme vibration began. The pilot reduced engine power, verified the airplane’s flight controls were still operational, and declared an emergency with the air traffic controller that he was in contact with. As the vibration continued, the pilot elected to shut down the engine and, as the propeller was windmilling, the vibration continued. The pilot reduced the airspeed in order to stop the propeller rotation, then immediately obtained best glide airspeed once the propeller stopped. As soon as the propeller stopped windmilling, the vibration ceased. The pilot landed the airplane without incident and it was towed to the fixed base operator. A postincident engine teardown revealed that there were no anomalies that would have precluded normal operation. Examination of a fracture surface on one of the propeller blades revealed that the blade tip failed as a result of fatigue cracking that initiated at the leading edge of the blade. The propeller blade was inspected about 72 operating hours before the incident, as part of the airplane’s 100-hour annual inspection, and no discrepancies were noted at that time.
NTSB Probable Cause Narrative
The separation of the propeller blade tip due to fatigue cracking that initiated at the blade’s leading edge.
Event Information
| Type of Event | Incident |
| Event Date | 1/28/2012 |
| Event Day of the Week | Saturday |
| Time of Event | 1705 |
| Event Time Zone | Central Standard Time |
| Event City | Jackson |
| Event State | MISSISSIPPI |
| Event Country | -- |
| Zipcode of the event site | 39208 |
| Event Date Year | 2012 |
| Event Date Month | 1 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 321840N |
| Event Location Longitude | 0900433W |
| Event Location Airport | Jackson-Evers Int'l |
| Event Location Nearest Airport ID | JAN |
| Indicates whether the acc/inc occurred off or on an airport | On Airport |
| Distance from airport in statute miles | -- |
| Degrees magnetic from airport | -- |
| Airport Elevation | 346 |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1654 Central Standard Time |
| Direction of event from weather observation facility (degrees) | 180 |
| Weather Observation Facility ID | KJAN |
| Elevation of weather observation facility | 346 |
| Distance of event from weather observation facility (units?) | 6 |
| Time Zone of the weather observation | CST |
| Lighting Conditions | Day |
| Lowest Ceiling Height | -- |
| Lowest Non-Ceiling Height | -- |
| Sky/Lowest/Cloud Conditions | Clear |
| Sky Condition for Lowest Ceiling | None |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | 10 |
| Air Temperature at event time (in degrees celsius) | 6 |
| Dew Point at event time (in degress fahrenheit) | -1 |
| Wind Direction (degrees magnetic) | 350 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 6 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 30.38 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | -- |
| METAR weather report | -- |
| Event Highest Injury | None |
| On Ground, Fatal Injuries | -- |
| On Ground, Minor Injuries | -- |
| On Ground, Serious Injuries | -- |
| Injury Total Fatal | -- |
| Injury Total Minor | -- |
| Injury Total None | 1 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 31087 |
| NTSB Notification Source | FAA Southern Region CROC |
| NTSB Notification Date | -- |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | -- |
| Date of most recent change to record | Apr 23 2013 11:11AM |
| User who most recently changed record | coln |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N427CP |
| NTSB Number | ERA12IA169 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | IFR |
| Flight plan Was Activated? | Yes |
| Damage | None |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | CESSNA |
| Aircraft Model | 172S |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 172S8689 |
| Certified Max Gross Weight | 2660 |
| Aircraft Category | Airplane |
| Aircraft Registration Class | -- |
| Aircraft is a homebuilt? | No |
| Flight Crew Seats | -- |
| Cabin Crew Seats | -- |
| Passenger Seats | -- |
| Total number of seats on the aircraft | 4 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | 100 Hour |
| Date of Last Inspection | Jul 8 2001 12:00AM |
| Airframe hours since last inspection | 72 |
| Airframe Hours | 1807 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | Unknown |
| Aircraft Owner Name | CIVIL AIR PATROL INC |
| Aircraft Owner Street Address | -- |
| Aircraft Owner City | MAXWELL AFB |
| Aircraft Owner State | AL |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 36112 |
| Operator is an individual? | No |
| Operator Name | CIVIL AIR PATROL INC |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | -- |
| Operator City | MAXWELL AFB |
| Operator State | AL |
| Operator Country | USA |
| Operator Zip code | 36112 |
| Operator Code | -- |
| Owner has at least one certificate | None |
| Other Operator of large aircraft? | No |
| Certified for Part 133 or 137 Operation | -- |
| Operator Certificate Number | -- |
| Indicates whether an air carrier operation was scheduled or not | -- |
| Indicates Domestic or International Flight | -- |
| Operator carrying Pax/Cargo/Mail | -- |
| Type of Flying (Per_Bus / Primary) | Other Work Use |
| Second Pilot on Board | No |
| Departure Point Same as Event | No |
| Departure Airport Code | JAN |
| Departure City | Jackson |
| Departure State | MS |
| Departure Country | USA |
| Departure Time | 1650 |
| Departure Time Zone | CST |
| Destination Same as Local Flt | dest & departure same, accident can occur anywhere |
| Destination Airport Code | HKS |
| Destination City | Bay St. Louis |
| Destination State | MS |
| Destination Country | USA |
| Specific Phase of Flight | -- |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Mar 12 2013 1:36PM |
| User who most recently changed record | kenj |
| Since inspection or accident | Time of Accident |
| Event Location Runway Number and Location | 34 |
| Runway Length | 8500 |
| Runway Width | 150 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |