ASN Wikibase Occurrence # 385754
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| Date: | Saturday 16 June 2001 |
| Time: | 10:40 LT |
| Type: |  Cessna 172S |
| Owner/operator: | Usaf Academy Aero Club |
| Registration: | N494SP |
| MSN: | 17258035 |
| Total airframe hrs: | 1142 hours |
| Engine model: | Lycoming IO-360-L2A |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Cambridge, NE -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Plattsmouth Municipal Airport, NE (KPMV) |
| Colorado Springs-USAF Academy Airport, CO (AFF/KAFF) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot said that he was approximately 20 miles south of Cambridge, Nebraska, at 6,500 feet mean sea level when his engine began to run rough and the airplane began to lose altitude. The pilot said he immediately turned toward the airport and declared an emergency. The pilot said he planned to land on runway 32 because he estimated the winds were out of the southwest. As he approached the airport, the pilot realized he was high and made a right 360 degree turn to lose altitude. The pilot said he was still high after the turn and decided his best option was to land on runway 14. When he turned on final for runway 14, the pilot realized that he was on a downwind approach. He decided that he had no option but to continue. The pilot said he had great difficulty getting the plane on the runway and bounced a couple of times. The pilot said it became apparent to him that he was not going to stop on the runway. "I decided to try to divert to [a] plowed field to the left of the runway ... I used the throttle to boost the plane over a road and a fence. Once clear I chopped the power and stalled the plane into the field." After touchdown, the airplane nosed over. An examination of the airplane's engine showed the intake and exhaust valves push rod tubes pushed upward and off on the number 2 cylinder. The intake valve push rod was bent upward. The exhaust valve push rod was broken 5 inches outward from the tappet seat. An examination of the airplane's other systems revealed no anomalies.
Probable Cause: the pilot's high airspeed and improper emergency procedures during the emergency landing. Factors relating to this accident were the fractured engine exhaust valve push rod, the bent intake valve push rod, and oil exhaustion during cruise flight, the tailwind, and the pilot's incorrect evaluation of the wind conditions during the emergency landing.
Accident investigation:
 |
|
Sources:
NTSB CHI01LA173
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 05-Apr-2024 07:35 | ASN Update Bot | Added |
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