Individually Owned: 150,657
Corporate Owned: 137,281
Staples Muni Airport
Aircraft Accident/Incident Report
Staples, Minnesota 56479
Thursday, July 17, 2003 12:30 CDT
NTSB Narrative Summary Released at Completion of Accident
The agricultural airplane received substantial damage during a forced landing subsequent to an aerial application. The pilot initiated a climb to the nearest airport when he noticed instrument indications of low oil pressure. About five seconds later, the propeller went into feather and the engine stopped. The pilot stated that he had never landed with a feathered propeller and when he attempted to land in a clearing, he floated across it and into trees at the far end. The examination revealed a separation through the oil jet flange consistent with high cycle fatigue that initiated at several locations along the flange surface. No tool marks were noted in the area. The oil jet flange material was consistent with the specified aluminum alloy.
NTSB Probable Cause Narrative
The fatigue fracture of the oil jet flange resulting in a total engine failure during the aerial application.
Event Information
| Type of Event | Accident |
| Event Date | 7/17/2003 |
| Event Day of the Week | Thursday |
| Time of Event | 1230 |
| Event Time Zone | Central Daylight Time |
| Event City | Staples |
| Event State | MINNESOTA |
| Event Country | -- |
| Zipcode of the event site | 56479 |
| Event Date Year | 2003 |
| Event Date Month | 7 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | -- |
| Event Location Longitude | -- |
| Event Location Airport | STAPLES MUNI |
| Event Location Nearest Airport ID | SAZ |
| Indicates whether the acc/inc occurred off or on an airport | Off Airport/Airstrip |
| Distance from airport in statute miles | -- |
| Degrees magnetic from airport | -- |
| Airport Elevation | 1287 |
| Weather Briefing Completeness | Unknown |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1235 Central Daylight Time |
| Direction of event from weather observation facility (degrees) | 360 |
| Weather Observation Facility ID | SAZ |
| Elevation of weather observation facility | 1287 |
| Distance of event from weather observation facility (units?) | 5 |
| Time Zone of the weather observation | CDT |
| 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) | 21 |
| Dew Point at event time (in degress fahrenheit) | 17 |
| Wind Direction (degrees magnetic) | 90 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 6 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Gusting |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | 30.18 |
| 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) | 17542 |
| NTSB Notification Source | FAA |
| NTSB Notification Date | Jul 17 2003 12:00AM |
| NTSB Notification Time | 1925 |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | Apr 28 2005 2:59PM |
| User who most recently changed record | NTSB\JOHB |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | FAA Minneapolis FSDO |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N3299A |
| NTSB Number | CHI03LA214 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 137: Agricultural |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | No |
| Damage | Destroyed |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Ayres Corporation |
| Aircraft Model | S2R-G10 |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | G10-117 |
| Certified Max Gross Weight | 10000 |
| Aircraft Category | Airplane |
| Aircraft Registration Class | U.S. Registered/U.S. Soil |
| Aircraft is a homebuilt? | No |
| Flight Crew Seats | -- |
| Cabin Crew Seats | -- |
| Passenger Seats | -- |
| Total number of seats on the aircraft | 1 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | -- |
| Airframe hours since last inspection | -- |
| Airframe Hours | -- |
| ELT Installed | No |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | PETERSON, KENNETH J |
| Aircraft Owner Street Address | 1711 Airport Road |
| Aircraft Owner City | Staples |
| Aircraft Owner State | MN |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 56479 |
| Operator is an individual? | No |
| Operator Name | Peterson Aerial Spraying |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | -- |
| Operator City | -- |
| Operator State | -- |
| Operator Country | -- |
| Operator Zip code | -- |
| Operator Code | KJEG |
| Owner has at least one certificate | None |
| Other Operator of large aircraft? | -- |
| 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) | Aerial Application |
| Second Pilot on Board | No |
| Departure Point Same as Event | No |
| Departure Airport Code | 8Y5 |
| Departure City | CLARISSA |
| Departure State | MN |
| Departure Country | USA |
| Departure Time | 1215 |
| Departure Time Zone | CDT |
| Destination Same as Local Flt | -- |
| Destination Airport Code | SAZ |
| Destination City | STAPLES |
| Destination State | MN |
| Destination Country | USA |
| Specific Phase of Flight | Emergency descent/landing |
| Report sent to ICAO? | No |
| Evacuation occurred | No |
| Date of most recent change to record | -- |
| User who most recently changed record | -- |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | NA |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |