ASN Wikibase Occurrence # 42410
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| Date: | Saturday 1 May 1999 |
| Time: | 13:34 |
| Type: |  Grob G103 Twin Astir |
| Owner/operator: | Philadelphia Glider Council |
| Registration: | N47938 |
| MSN: | 3841-K-87 |
| Fatalities: | Fatalities: 1 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Hilltown, PA -
 United States of America
|
| Phase: | En route |
| Nature: | Training |
| Departure airport: | 0PA0 |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The Cessna was in an approximate 10 degree right bank climbing turn, towing a glider. As the Cessna reached approximately 1,000 feet; the pilot (witness) of the glider being towed saw another glider, a Grob, approaching from his 11:00 position. The Grob was in an approximate 15 degree right bank descending turn. The pilot being towed believed that the Cessna and Grob were on a collision course, and he released from the tow airplane. He saw the two aircraft collide, and the Cessna spin to the ground. He did not see the Grob after impact, but saw fluttering debris. Both the Cessna and Grob were equipped with communication radios.
Probable Cause: The inadequate lookout of the pilots-in-command of the glider and the towplane.
Sources:
NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20001212X18789&key=1
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 29-Jul-2009 21:21 | DColclasure | Updated |
| 29-Nov-2009 08:54 | Alpine Flight | Updated |
| 21-Dec-2016 19:24 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 26-Nov-2017 15:16 | ASN Update Bot | Updated [Total fatalities, Total occupants, Departure airport, Source, Narrative] |
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