ASN Wikibase Occurrence # 156563
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: | Wednesday 12 June 2013 |
| Time: | 06:59 |
| Type: |  Glasair II FG |
| Owner/operator: | Private |
| Registration: | N15GG |
| MSN: | 1004 |
| Year of manufacture: | 1992 |
| Engine model: | Lycoming IO360 SER A&C |
| Fatalities: | Fatalities: 2 / Occupants: 2 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Montague, northern California -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Montague, CA (1O5) |
| Montague, CA (1O5) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The two pilots departed for a personal flight so that the right-seat pilot could become familiar with the airplane, which was owned by the left-seat pilot. The airplane was equipped with dual flight controls; however, it could not be determined which pilot was manipulating the controls at the time of the accident. Witnesses located adjacent to the accident site reported that they heard the sound of an airplane maneuvering with its engine operating at a high power setting followed by the sound of impact. Postaccident examination of the engine and airframe revealed that the flap handle interconnect was disconnected from the flap torque tubes with no corresponding bolt or nut located within the wreckage. Although the flaps in the disconnected configuration would have prevented the pilot from selecting a flap setting, airflow during flight would have kept the flaps in a retracted position. No evidence of any additional preexisting mechanical anomalies that would have precluded normal operation was found. Wreckage and impact signatures were consistent with an inverted flat-spin impact with terrain.
Postmortem toxicology tests for the right-seat pilot, who had a valid Federal Aviation Administration (FAA) medical certificate, was positive for metoprolol (a beta-adrenergic receptor antagonist), which he was taking due to a valve replacement and aortic repair. Nothing from the autopsy suggested impairment or incapacitation from a medical condition or medication. Postmortem toxicology tests for the left-seat pilot, who did not have a current FAA medical certificate, were positive for norfluoxetine (an atypical antidepressant), fluoxetine (an antidepressant), olanzapine (commonly used for treatment of schizophrenia), and Warfarin (an anticoagulant medication). It is likely that the underlying psychiatric condition and/or medication being used to treat the conditions could have been impairing to some degree; however, the right-seat pilot should have been able to successfully fly the airplane even if some impairment was present in the left-seat pilot. No evidence suggests that pilot impairment or incapacitation contributed to the accident.
Probable Cause: The pilot’s failure to maintain airplane control while maneuvering for reasons that could not be determined during postaccident testing and examination, which resulted in a stall and subsequent spin.
Accident investigation:
 |
|
Sources:
NTSB
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 13-Jun-2013 02:56 | gerard57 | Added |
| 13-Jun-2013 17:52 | Geno | Updated [Time, Aircraft type, Registration, Cn, Source, Narrative] |
| 21-Dec-2016 19:28 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 29-Nov-2017 08:47 | ASN Update Bot | Updated [Operator, Other fatalities, Departure airport, Destination airport, Source, 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