Individually Owned: 150,657
Corporate Owned: 137,281
Red Wing Regional Airport
Aircraft Accident/Incident Report
Hager City, Wisconsin 54014
Saturday, May 29, 2004 14:10 CDT
NTSB Narrative Summary Released at Completion of Accident
The airplane collided with trees and terrain following a loss of engine power while maneuvering during an airshow. Witnesses reported hearing the pilot state that he had an engine malfunction as he was lining up for a low pass over the airport. They stated the propeller was turning, but the airplane was descending. The airplane passed under high tension power lines and collided with trees prior to coming to rest in the back yard of a residence. Examination of the engine revealed the upper vertical camshaft drive gear had backed off of the drive shaft. The camshaft gear fits on splines on the upper vertical drive shaft followed by a tab washer, a retainer washer, and a retaining nut. The retainer washer has two interior tabs that insert into smaller splines at the top of the shaft, which keep it from rotating. On the outer diameter surface, the retainer washer contains slots where tabs from the tab washer can be bent into place. A metallurgical examination of the gearbox cover, retaining nut, retaining washer, tab washer, and the camshaft drive gear revealed the components were installed in the correct order. The damage on the components indicates that the tabs on the tab washer were most likely not bent into place around the retaining washer and nut, allowing the nut to back off the shaft. It could not be determined if the nut had been properly torqued during its installation. The engine had been overhauled approximately 424 hours prior to the accident.
NTSB Probable Cause Narrative
The improper installation of the camshaft drive gear assembly which resulted in the retaining nut backing off allowing the drive gear to move up the shaft. A factor associated with the accident was the low altitude at which the power loss occurred and the trees which the airplane contacted during the forced landing.
Event Information
| Type of Event | Accident |
| Event Date | 5/29/2004 |
| Event Day of the Week | Saturday |
| Time of Event | 1410 |
| Event Time Zone | Central Daylight Time |
| Event City | Hager City |
| Event State | WISCONSIN |
| Event Country | -- |
| Zipcode of the event site | 54014 |
| Event Date Year | 2004 |
| Event Date Month | 5 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 443522N |
| Event Location Longitude | 0922906W |
| Event Location Airport | Red Wing Regional |
| Event Location Nearest Airport ID | RGK |
| Indicates whether the acc/inc occurred off or on an airport | Off Airport/Airstrip |
| Distance from airport in statute miles | 1.5 |
| Degrees magnetic from airport | 270 |
| Airport Elevation | 780 |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1415 Central Daylight Time |
| Direction of event from weather observation facility (degrees) | -- |
| Weather Observation Facility ID | RGK |
| Elevation of weather observation facility | 780 |
| Distance of event from weather observation facility (units?) | 0 |
| Time Zone of the weather observation | CDT |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 1000 |
| Lowest Non-Ceiling Height | -- |
| Sky/Lowest/Cloud Conditions | -- |
| Sky Condition for Lowest Ceiling | Overcast |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | 10 |
| Air Temperature at event time (in degrees celsius) | 14 |
| Dew Point at event time (in degress fahrenheit) | 11 |
| Wind Direction (degrees magnetic) | 120 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 19 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Gusting |
| Wind Gust (knots) | 25 |
| Altimeter Setting at event time (in. Hg) | 29.77 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | -- |
| METAR weather report | -- |
| Event Highest Injury | Fatal |
| On Ground, Fatal Injuries | -- |
| On Ground, Minor Injuries | -- |
| On Ground, Serious Injuries | -- |
| Injury Total Fatal | 1 |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 1 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 17400 |
| NTSB Notification Source | FAA |
| NTSB Notification Date | May 29 2004 12:00AM |
| NTSB Notification Time | 1430 |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | Mar 30 2005 6:20AM |
| User who most recently changed record | NTSB\JOHB |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | Minneapolis, MN FSDO |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N61429 |
| NTSB Number | CHI04LA128 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | No |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | North American |
| Aircraft Model | P-51C |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 103-26199 |
| Certified Max Gross Weight | 12000 |
| 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 | Mar 28 2004 12:00AM |
| Airframe hours since last inspection | 15 |
| Airframe Hours | 2832.1 |
| ELT Installed | Unknown |
| ELT Activated | Unknown |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | American Airpower Heritage Flying Museum |
| Aircraft Owner Street Address | 225 Bravo Lane |
| Aircraft Owner City | S. St. Paul |
| Aircraft Owner State | MN |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 55075 |
| Operator is an individual? | No |
| Operator Name | -- |
| Operator Same as Owner? | Yes |
| 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 | -- |
| 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) | Air Race/Show |
| Second Pilot on Board | No |
| Departure Point Same as Event | Yes |
| Departure Airport Code | RGK |
| Departure City | Red Wing |
| Departure State | MN |
| Departure Country | USA |
| Departure Time | 1330 |
| Departure Time Zone | EDT |
| Destination Same as Local Flt | crash at destination city |
| Destination Airport Code | RGK |
| Destination City | Red Wing |
| Destination State | MN |
| Destination Country | USA |
| Specific Phase of Flight | Descent |
| 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 | Last Inspection |
| Event Location Runway Number and Location | NA |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |