ASN Wikibase Occurrence # 354704
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: | Wednesday 18 March 1998 |
| Time: | 15:45 LT |
| Type: |  Callair A-9 |
| Owner/operator: | Sailplane Enterprises Intl |
| Registration: | N7211V |
| MSN: | 1248 |
| Total airframe hrs: | 6507 hours |
| Engine model: | Lycoming O-540-B2B5 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Thermal, CA -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | (KTRM) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The aircraft lost power while towing a glider and made an emergency landing. Examination of the engine revealed that the crankcase upper surface near the number three cylinder was cracked and displaced outward. The oil pump drive coupling at the crankshaft gear displayed signatures consistent with heat distress. The oil pump drive at the oil pump would not rotate. The oil pump housing and mounting pad were free of any rotational scoring and did not display evidence of oil starvation or metal contamination. The crankshaft gear was a Lycoming part number 13S19648 and is the part number for the Lycoming IO-540 series engines. The engine in the accident aircraft is a Lycoming O-540-B2B5 and the crankshaft gear part number for this engine is 13S19647.
Probable Cause: The failure of the oil pump drive shaft due to the installation of an incorrect oil pump crankshaft gear by maintenance personnel at the last overhaul.
Accident investigation:
 |
|
Sources:
NTSB LAX98LA131
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 11-Mar-2024 17:25 | 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