ASN Wikibase Occurrence # 349367
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| Date: | Friday 20 August 1999 |
| Time: | 11:36 |
| Type: |  Mooney M20C |
| Owner/operator: | Private |
| Registration: | C-GASL |
| MSN: | 2225 |
| Year of manufacture: | 1962 |
| Total airframe hrs: | 3163 hours |
| Engine model: | Lycoming O-360-A1D |
| Fatalities: | Fatalities: 4 / Occupants: 4 |
| Other fatalities: | 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | 0.9 nm from Penticton Airport, BC -
 Canada
|
| Phase: | Approach |
| Nature: | Private |
| Departure airport: | Penticton, British Columbia |
| Penticton, British Columbia | |
| Investigating agency: | TSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
A Mooney M20C (C-GASL) and a Cessna 177RG (C-GWYY) crashed following a mid-air collision near Penticton Airport, BC. All five occupants were killed.
The Mooney was returning to the Penticton, British Columbia, from the northwest after a local visual flight rules flight with the pilot and three passengers on board. The aircraft remained west of the extended runway 34 centreline until turning eastbound onto a track that would intersect the departure path of runway 34. About this time, a Cessna 177RG at the Penticton airport taxied out for a visual flight rules departure, northbound to Valemount, with only the pilot on board. The pilot of the Cessna 177RG advised the Penticton flight service station that he was ready to depart. The flight service station specialist acknowledged and recorded the departure time as 1135 Pacific daylight time. At about 1136, the Cessna 177RG and the Mooney M20C collided in-flight about 0.9 nautical mile from the departure end of runway 34. Both aircraft were destroyed and crashed within the city of Penticton.
At the time of the accident, the weather was sunny with unrestricted visibility, little cloud, and calm wind.
Findings as to Causes and Contributing Factors
1. Neither pilot saw the other aircraft in sufficient time to initiate evasive action.
2. The Mooney pilot did not follow recommended circuit-joining procedures.
3. The Mooney pilot=s initial check-in was incomplete and ambiguous. Any mental models developed by the flight service station (FSS) specialists (or by other pilots in the area) regarding the Mooney pilot's circuit-joining intentions were based on this incomplete and ambiguous information.
4. The Penticton FSS specialist did not directly advise the Mooney pilot of the departing Cessna, although the departure transmission by the Cessna to the FSS should have been heard by the pilot of the Mooney.
5. The Penticton FSS specialist did not obtain and provide a traffic update to the Cessna pilot when he was ready to depart. Another advisory was not required unless the specialist believed that the traffic was pertinent or that a potential conflict existed.
6. The Cessna pilot did not request a traffic update from the Penticton FSS when he was ready to depart. It is unknown whether the pilot monitored the mandatory frequency to ascertain that his departure would be free of conflicting traffic.
Accident investigation:
 |
|
Sources:
TSB
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 27-Dec-2023 11:34 | harro | Added |
Corrections or additions? ... Edit this accident description
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