ASN Wikibase Occurrence # 386234
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| Date: | Wednesday 7 February 2001 |
| Time: | 16:00 LT |
| Type: |  Cessna 172S |
| Owner/operator: | Louisiana Technical University |
| Registration: | N980SP |
| MSN: | 172S8182 |
| Year of manufacture: | 1999 |
| Total airframe hrs: | 341 hours |
| Engine model: | Lycoming IO-360-L2A |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Minor |
| Category: | Serious incident |
| Location: | Ruston, LA -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Training |
| Departure airport: | Ruston Airport, LA (RSN/KRSN) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The flight instructor and the student pilot were practicing power-off stalls in the local practice area. In preparation for a power-off stall maneuver, the student pilot performed "the flow checklist (fuel valve on both, mixture rich), and had reduced power in order to slow [the] speed." Shortly after this procedure, the engine lost power. The engine failed to restart, and the flight instructor executed a forced landing to a field, and the airplane impacted a fence. During a post-incident engine run, the engine repeatedly lost total power after the throttle was reduced to idle. The engine manufacturer representative adjusted the mixture control wheel, located on the fuel injector unit, "eight turns toward the lean setting." The engine was restarted, and when the throttle was reduced to the idle position, the engine continued to run. Inspection of the operator's fleet revealed that the idle mixture controls of several other airplanes of the same make and model were also out of adjustment.
Probable Cause: the loss of engine power while manuevering as a result of an incorrect mixture control adjustment. A contributing factor was the lack of suitable terrain for the ensuing forced landing.
Accident investigation:
 |
|
Sources:
NTSB FTW01IA062
History of this aircraft
Other occurrences involving this aircraft
| 13 March 2019 | N980SP | LLP Leasing Group LLC | 0 | Grand Prairie Municipal Airport (KGPM), Grand Prairie, TX | |
sub |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 05-Apr-2024 12:39 | ASN Update Bot | Added |
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