ASN Wikibase Occurrence # 298291
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| Date: | Monday 12 November 2001 |
| Time: | 15:50 LT |
| Type: |  Cessna 150M |
| Owner/operator: | Chicago Business Air Center |
| Registration: | N63262 |
| MSN: | 15077213 |
| Year of manufacture: | 1975 |
| Total airframe hrs: | 4156 hours |
| Engine model: | Teledyne Continental O-200-A48 |
| Fatalities: | Fatalities: / Occupants: 2 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Dyer, Indiana -
 United States of America
|
| Phase: | Unknown |
| Nature: | Training |
| Departure airport: | Chicago-Lansing Municipal Airport, IL (KIGQ) |
| Chicago-Lansing Municipal Airport, IL (KIGQ) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
During an instructional flight the airplane entered an inadvertent spin and subsequently impacted the terrain. The plotted aircraft radar track data showed the airplane performing a maneuver consistent with a clearing turn prior to the airplane decelerating at a constant altitude. The plotted data then shows the airplane reversing course and entering a spiraling descent. The average descent rate for the last 50.82 seconds of aircraft radar track data was 2,125 feet/minute. No anomalies were found with the accident airplane that could be associated with a pre-impact condition. Diphenhydramine (trade name Benadryl), an over-the-counter antihistamine with sedative effects, was detected in the blood of the certified flight instructor (CFI) at a level consistent with that found about 2-3 hours following ingestion of a single maximum over-the-counter dose. The effects of over-the-counter antihistamines, including diphenhydramine, was evaluated in a medical study, which concluded that a normal over-the-counter dose of diphenhydramine adversely affected performance more than a 0.1% blood alcohol concentration. The study further concluded that there was no correlation between drowsiness and impairment.
Probable Cause: The failure of the flight crew to maintain adequate airspeed, resulting in an inadvertent stall/spin and the flight instructor's inadequate supervision of the flight, his impairment due to the use of over-the-counter medication is a contributing factor.
Accident investigation:
 |
|
Sources:
NTSB CHI02FA025
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 15-Oct-2022 16:18 | ASN Update Bot | Added |
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