Individually Owned: 150,657
Corporate Owned: 137,281
Deadhorse Airport
Aircraft Accident/Incident Report
Deadhorse, Alaska 99734
Tuesady, July 4, 2000 19:10 AKD
NTSB Narrative Summary Released at Completion of Accident
The certificated airline transport reported that about 10 minutes after departure, while in cruise, level flight, he noted a light sheen of oil forming on the windshield, and he elected to return to his departure airport. He noted that by the time he was within two miles of the airport he was having difficulty seeing though the windshield due to a heavy accumulation of oil. He said that while on approach to the airport, the propeller rpm increased for about 20 seconds, followed by the propeller detaching from the engine. He said that he was able to glide the airplane to the runway, and land without further incident. A postincident investigation revealed that the engine had been rebuilt/zero-timed by Teledyne Continental Motors, 9.0 hours of operation, and 3 days before the incident. A Safety Board metallurgist examined the fractured crankshaft flange, and reported that his initial visual examination revealed that about one-half of the fracture was on a flat plane and contained crack arrest positions, features indicative of fatigue cracking. He added that the primary fatigue initiation appeared to be from a very large number of individual initiation sites in the center of the fatigue region.
NTSB Probable Cause Narrative
An in-flight fracture of the engine crankshaft propeller flange. A factor associated with the accident was the manufacturer's inadequate quality control standards.
Event Information
| Type of Event | Incident |
| Event Date | 7/4/2000 |
| Event Day of the Week | Tuesday |
| Time of Event | 1910 |
| Event Time Zone | -- |
| Event City | DEADHORSE |
| Event State | ALASKA |
| Event Country | -- |
| Zipcode of the event site | 99734 |
| Event Date Year | 2000 |
| Event Date Month | 7 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | -- |
| Event Location Longitude | -- |
| Event Location Airport | DEADHORSE |
| Event Location Nearest Airport ID | SCC |
| 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 | 61 |
| Weather Briefing Completeness | Not pertinent |
| Investigator's weather source | Unknown |
| Time of the weather observation | 0 |
| Direction of event from weather observation facility (degrees) | 0 |
| Weather Observation Facility ID | |
| Elevation of weather observation facility | 0 |
| Distance of event from weather observation facility (units?) | 0 |
| Time Zone of the weather observation | |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 2000 |
| Lowest Non-Ceiling Height | 0 |
| Sky/Lowest/Cloud Conditions | Unknown |
| Sky Condition for Lowest Ceiling | Overcast |
| Visibility Runway Visual Range (Feet) | 0 |
| Visibility Runway Visual Value (Statute Miles) | 0 |
| Visibility (Statute Miles) | 10 |
| Air Temperature at event time (in degrees celsius) | -- |
| Dew Point at event time (in degress fahrenheit) | -- |
| Wind Direction (degrees magnetic) | 260 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 20 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Unknown |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | -- |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | Unknown |
| METAR weather report | -- |
| Event Highest Injury | None |
| On Ground, Fatal Injuries | 0 |
| On Ground, Minor Injuries | 0 |
| On Ground, Serious Injuries | 0 |
| Injury Total Fatal | -- |
| Injury Total Minor | -- |
| Injury Total None | 1 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 5025 |
| NTSB Notification Source | Cape Smyth Air Service, Inc. |
| NTSB Notification Date | Jul 5 2000 12:00AM |
| NTSB Notification Time | 850 |
| Fiche Number and/or location -used to find docket information | IMAGE |
| Date of most recent change to record | Jul 10 2001 3:47PM |
| User who most recently changed record | MONR |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N73100 |
| NTSB Number | ANC00IA083 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 135: Air Taxi & Commuter |
| Type of Flight Plan filed | Company VFR |
| Flight plan Was Activated? | -- |
| Damage | Minor |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Cessna |
| Aircraft Model | 207A |
| Aircraft Series Identifier | 207A |
| Aircraft Serial Number | 20700559 |
| Certified Max Gross Weight | 3800 |
| 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 | 4 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | 100 Hour |
| Date of Last Inspection | Jun 29 2000 12:00AM |
| Airframe hours since last inspection | 9 |
| Airframe Hours | 17814 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | CAPE SMYTH AIR SERVICE, INC. |
| Aircraft Owner Street Address | P.O.BOX 549 |
| Aircraft Owner City | BARROW |
| Aircraft Owner State | AK |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 99723 |
| Operator is an individual? | -- |
| 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 | CSAA |
| Owner has at least one certificate | Yes - certificate holder |
| Other Operator of large aircraft? | No |
| Certified for Part 133 or 137 Operation | Unknown |
| Operator Certificate Number | -- |
| Indicates whether an air carrier operation was scheduled or not | Non-scheduled |
| Indicates Domestic or International Flight | Domestic |
| Operator carrying Pax/Cargo/Mail | Cargo |
| Type of Flying (Per_Bus / Primary) | Unknown |
| Second Pilot on Board | No |
| Departure Point Same as Event | No |
| Departure Airport Code | SCC |
| Departure City | DEADHORSE |
| Departure State | AK |
| Departure Country | |
| Departure Time | 1900 |
| Departure Time Zone | AST |
| Destination Same as Local Flt | -- |
| Destination Airport Code | 10AK |
| Destination City | NUIQSUT |
| Destination State | AK |
| Destination Country | |
| Specific Phase of Flight | -- |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Jun 3 2001 4:08AM |
| User who most recently changed record | dbo |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | 4 |
| Runway Length | 6500 |
| Runway Width | 150 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |