ASN Wikibase Occurrence # 354951
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information.
If you feel this information is incomplete or incorrect, you can submit corrected information.
| Date: | Saturday 13 December 1997 |
| Time: | 13:10 LT |
| Type: |  Cessna 175A |
| Owner/operator: | Private |
| Registration: | N6846E |
| MSN: | 56346 |
| Year of manufacture: | 1959 |
| Total airframe hrs: | 1995 hours |
| Engine model: | Continental GO-300-C |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Houston, TX -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Training |
| Departure airport: | , TX (KDWH) |
| (2XS3) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
During cruise flight at full throttle and engine rpm at 2,700 to 2,800 (maximum 3,200 rpm), the engine ran rough. As the engine rpm and oil pressure decreased, emergency procedures performed by the flight instructor did not restore engine power. During the forced landing in a wet field, the nose gear collapsed and the airplane nosed over to an inverted position. This was the flight instructor's first flight in this make and model of aircraft. Before takeoff, the left magneto drop was beyond the 125 rpm maximum drop allowable. The last annual inspection was conducted in April 1997 at a tachometer reading of 1,956.59 hours. The tachometer reading at the time of the accident was 1,995.61 hours. A teardown of the engine revealed a hole in the #6 cylinder piston, and separation of the rod cap and bolts for the #3 cylinder connecting rod. The components of the #3 connecting rod exhibited overload features. The #6 cylinder piston exhibited physical evidence of detonation or preignition.
Probable Cause: The total loss of engine power resulting from detonation and the ensuing failure of the engine piston and connecting rod components. Factors were: the instructor's decision to take off with a known deficiency (magneto drop over limit), the flight instructor's lack of familiarity with the aircraft, and the lack of suitable terrain for the forced landing.
Accident investigation:
 |
|
Sources:
NTSB FTW98LA062
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 12-Mar-2024 06:25 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
The Aviation Safety Network is an exclusive service provided by:
Quick Links:
| ASN Home | Send Correction / Feedback |
| FSF Home | Disclaimer | Copyright |
| Contact Us | Privacy Policy |
| Press / Media |
CONNECT WITH US:
©2024 Flight Safety Foundation