ASN Wikibase Occurrence # 89777
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| Date: | Monday 31 January 2011 |
| Time: | 15:25 |
| Type: |  Cessna 172 Skyhawk |
| Owner/operator: | Private |
| Registration: | N6922A |
| MSN: | 29022 |
| Year of manufacture: | 1956 |
| Total airframe hrs: | 2796 hours |
| Engine model: | Continental O-300A |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Glendora, California -
 United States of America
|
| Phase: | En route |
| Nature: | Training |
| Departure airport: | La Verne, CA (POC) |
| La Verne, CA (POC) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The flight instructor reported that he and the commercially certificated student flew to mountainous terrain to practice using orographic lift. The flight instructor stated that the lift they were flying in began to dissipate so he took the flight controls and added full power to depart the area. Suddenly, they encountered a strong downdraft and moments later they impacted the terrain. It is likely that the airplane was not at a sufficient altitude for the pilot to recover from the downdraft encounter and clear the terrain. The flight instructor told local authorities at the time of his rescue that there were no problems with the airplane. A postaccident examination revealed no evidence of any preimpact mechanical anomalies with the airframe or engine that would have precluded normal operation.
Probable Cause: The flight crew's failure to maintain adequate terrain clearance while maneuvering in downdraft conditions over mountains.
Accident investigation:
 |
|
Sources:
NTSB: https://www.ntsb.gov/_layouts/NTSB/OpenDocument.aspx?Document_DataId=40355688&FileName=Pilot/Operator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Redacted.PDF
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 01-Feb-2011 15:52 | gerard57 | Added |
| 01-Feb-2011 20:15 | bizjets101 | Updated [Registration, Cn, Operator, Location, Nature, Departure airport, Destination airport, Source, Damage, Narrative] |
| 21-Dec-2016 19:25 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 26-Nov-2017 18:46 | ASN Update Bot | Updated [Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative] |
| 21-Mar-2021 17:10 | Anon. | Updated [Source] |
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