Individually Owned: 150,657
Corporate Owned: 137,281
Airmen Acres Airport
Aircraft Accident/Incident Report
Collinsville, Oklahoma 74021
Sunday, September 28, 2008 11:48 CDT
NTSB Narrative Summary Released at Completion of Accident
A commercial pilot and a private pilot/owner departed on a maintenance test flight in a multi-engine airplane that the private pilot had spent the last four years restoring. The flight departed and completed one circuit around the traffic pattern and then initiated a second circuit. While on the downwind leg of the second circuit, witnesses observed the airplane enter a steep nose down attitude as it was turning onto the base leg followed by the sound of an impact. Radar data revealed that that the airplane's ground speed had decreased throughout the maneuver and was near stall speed at the time the accident occurred. The commercial pilot had a history of hip pain treated with nortriptyline (a prescription antidepressant also used for pain control), and symptoms of post-traumatic stress disorder treated with fluoxetine (a prescription antidepressant also used for other psychiatric conditions) and trazodone (a prescription antidepressant also used for insomnia). Toxicology findings were consistent with the ongoing use of all three drugs. Nortriptyline has adverse cognitive and performance effects, particularly with higher blood levels, and fluoxetine may interfere with its metabolism, potentially raising the blood level of nortriptyline. It is possible that the pilot was impaired or distracted by his hip pain, or impaired by nortriptyline. The private pilot occasionally used diphenhydramine (an over-the-counter sedating antihistamine) for allergy symptoms, and toxicology findings were consistent with recent ingestion of the drug. In typical doses, diphenhydramine commonly results in drowsiness, and has measurable effects on performance of complex cognitive and motor tasks, even in individuals who feel normal after ingesting the drug. It is likely that the private pilot was impaired by recent ingestion of diphenhydramine. Neither pilot had indicated the use of the detected medications or conditions for which they were used on their last applications for Airman Medical Certificate. It was not possible to determine who was flying the aircraft at the time control was lost. Examination of the airplane and both engines revealed no premishap mechanical deficiencies.
NTSB Probable Cause Narrative
The crews' failure to maintain adequate airspeed, which resulted in an aerodynamic stall close to the ground.
Event Information
| Type of Event | Accident |
| Event Date | 9/28/2008 |
| Event Day of the Week | Sunday |
| Time of Event | 1148 |
| Event Time Zone | Central Daylight Time |
| Event City | Collinsville |
| Event State | OKLAHOMA |
| Event Country | -- |
| Zipcode of the event site | 74021 |
| Event Date Year | 2008 |
| Event Date Month | 9 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 361905N |
| Event Location Longitude | 0955353W |
| Event Location Airport | Airmen Acres Airport |
| Event Location Nearest Airport ID | OK93 |
| Indicates whether the acc/inc occurred off or on an airport | Off Airport/Airstrip |
| Distance from airport in statute miles | 1 |
| Degrees magnetic from airport | -- |
| Airport Elevation | 695 |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1153 Central Daylight Time |
| Direction of event from weather observation facility (degrees) | 180 |
| Weather Observation Facility ID | TUL |
| Elevation of weather observation facility | 695 |
| Distance of event from weather observation facility (units?) | 9 |
| 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) | 27 |
| Dew Point at event time (in degress fahrenheit) | 13 |
| Wind Direction (degrees magnetic) | -- |
| Variable Wind Indicator | Variable |
| Wind Speed (knots) | 3 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 30.15 |
| 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 | 2 |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 2 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 26367 |
| NTSB Notification Source | Regional Operations Center, FT |
| NTSB Notification Date | -- |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | -- |
| Date of most recent change to record | Jan 20 2010 1:06PM |
| User who most recently changed record | johb |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N4165T |
| NTSB Number | DFW08FA237 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | -- |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | CESSNA |
| Aircraft Model | 320D |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 320D0065 |
| Certified Max Gross Weight | -- |
| 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 | 6 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Unknown |
| Date of Last Inspection | -- |
| Airframe hours since last inspection | -- |
| Airframe Hours | -- |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | C91 |
| Aircraft Owner Name | HAZELWOOD HARVEY L |
| Aircraft Owner Street Address | 7462 E 126TH ST N |
| Aircraft Owner City | COLLINSVILLE |
| Aircraft Owner State | OK |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 74021-7014 |
| Operator is an individual? | No |
| Operator Name | HAZELWOOD HARVEY L |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | -- |
| Operator City | -- |
| Operator State | -- |
| Operator Country | USA |
| Operator Zip code | -- |
| 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) | Personal |
| Second Pilot on Board | Yes |
| Departure Point Same as Event | No |
| Departure Airport Code | OK93 |
| Departure City | Airmen Acres |
| Departure State | OK |
| Departure Country | USA |
| Departure Time | 1140 |
| Departure Time Zone | CDT |
| Destination Same as Local Flt | crash at destination city |
| Destination Airport Code | OK93 |
| Destination City | Collinsville |
| Destination State | OK |
| Destination Country | USA |
| Specific Phase of Flight | -- |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Nov 30 2009 3:17PM |
| User who most recently changed record | dinc |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | N/A |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |