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| Date: | Thursday 1 July 2004 |
| Time: | 14:30 |
| Type: |  Henes Zenair CH 701 |
| Owner/operator: | Private |
| Registration: | N98EH |
| MSN: | 01 |
| Engine model: | Continental C-75 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Other fatalities: | 0 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Mansfield-Lahm Airport, Richland, OH -
 United States of America
|
| Phase: | Landing |
| Nature: | Private |
| Departure airport: | Mansfield-Lahm Municipal Airport, OH (MFD/KMFD) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
During the takeoff and initial climb, the engine power was 100 rpm lower than expected, and the oil pressure decreased to 0. The pilot initiated a left turn for a precautionary landing at the airport. The engine continued to lose power during the approach, but it did not experience a total loss of power. The airplane was not aligned with the centerline as it touched down on a runway, and traveled off the left side. Examination of the airplane revealed that the pilot had recently installed a homemade oil cooler adapter on the certificated engine.
Probable Cause: The pilot's failure to maintain directional control during a precautionary landing. A factor was the pilot's unapproved maintenance modification resulting in the loss of oil pressure and partial loss of engine power.
Accident investigation:
 |
|
Sources:
NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20040714X00972&key=1
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 05-Sep-2015 13:57 | Noro | Added |
| 21-Dec-2016 19:30 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency, ] |
| 07-Dec-2017 18:14 | ASN Update Bot | Updated [Cn, Other fatalities, Departure airport, Destination airport, Source, Narrative, ] |
| 08-Nov-2022 02:35 | Ron Averes | Updated [Location, Departure airport, ] |
| 08-Nov-2022 02:37 | Ron Averes | Updated [Location, ] |
| 17-Nov-2022 01:10 | Ron Averes | Updated [Location, ] |
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