ASN Wikibase Occurrence # 20736
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| Date: | Friday 6 June 2008 |
| Time: | 11:30 |
| Type: |  Cessna 172M Skyhawk |
| Owner/operator: | Alex Al-Abed |
| Registration: | N73403 |
| MSN: | 17267432 |
| Year of manufacture: | 1976 |
| Engine model: | Lycoming O-320-E2D |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | near Sonoma County Airport, Sonoma, CA -
 United States of America
|
| Phase: | En route |
| Nature: | Training |
| Departure airport: | San Carlos, CA (SQL) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The certificated flight instructor (CFI) and a student were practicing landings. They made two successful landings, and were on approach for a third. Around this time, the recorded winds were from 250 degrees at 7 knots gusting to 18. When the airplane was 50 feet above ground level (agl), and over the runway numbers, the student reduced power to idle per the CFI's instructions. At that moment, the airplane encountered a sudden wind shift or gust, which abruptly caused the airplane to pitch down and bank to the right. The CFI added full power, and applied back pressure on the yoke, but was unable to keep the airplane from descending rapidly. The nose gear and right main landing gear violently struck the runway. The nose gear broke off, and the airplane bounced. The CFI regained control, and landed the airplane on both main landing gear while keeping the nose gear off the ground as long as possible. The nose settled on the broken nose gear strut, and the airplane stopped on the runway.
Probable Cause: The flight instructor's inadequate compensation for the wind conditions, and his inadequate supervision of the student pilot. Factors contributing to the accident were a sudden wind shift and wind gusts.
Accident investigation:
 |
|
Sources:
NTSB
History of this aircraft
Other occurrences involving this aircraft
| 16 October 1990 | N73403 | United Co-op Flying Club Inc. | 0 | San Carlos, CA | |
sub |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 07-Jun-2008 11:00 | Fusko | Added |
| 20-Oct-2008 04:32 | RobertMB | Updated |
| 21-Dec-2016 19:14 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 21-Dec-2016 19:16 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 21-Dec-2016 19:20 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 03-Dec-2017 11:22 | ASN Update Bot | Updated [Cn, Operator, Total occupants, Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative] |
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