ASN Wikibase Occurrence # 34346
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information.
If you feel this information is incomplete or incorrect, you can submit corrected information.
| Date: | Sunday 28 September 2008 |
| Time: | 11:48 |
| Type: |  Cessna 320D |
| Owner/operator: | Hazelwood Harvey L |
| Registration: | N4165T |
| MSN: | 320D0065 |
| Year of manufacture: | 1965 |
| Engine model: | Continental TSIO-520 SER |
| Fatalities: | Fatalities: 2 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Collinsville, OK -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Private |
| Departure airport: | Airmen Acres, OK (OK93) |
| Collinsville, OK (OK93) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
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.
Probable Cause: The crews' failure to maintain adequate airspeed, which resulted in an aerodynamic stall close to the ground.
Accident investigation:
 |
|
Sources:
NTSB
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 03-Dec-2017 12:03 | ASN Update Bot | Updated [Time, Operator, Other fatalities, Nature, Departure airport, Destination airport, Source, Damage, Narrative] |
Corrections or additions? ... Edit this accident description
The Aviation Safety Network is an exclusive service provided by:
Quick Links:
| ASN Home | Send Correction / Feedback |
| FSF Home | Disclaimer | Copyright |
| Contact Us | Privacy Policy |
| Press / Media |
CONNECT WITH US:
©2024 Flight Safety Foundation