ASN Wikibase Occurrence # 364232
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| Date: | Friday 22 November 1991 |
| Time: | 06:50 LT |
| Type: |  Cessna 310R |
| Owner/operator: | New Creations, Inc |
| Registration: | N35H |
| MSN: | 310R0953 |
| Year of manufacture: | 1977 |
| Engine model: | CONTINENTAL I0-520-M |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | South St Paul, MN -
 United States of America
|
| Phase: | Initial climb |
| Nature: | Unknown |
| Departure airport: | |
| Des Moines, IA (KDSM) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
AS THE AIRPLANE CLIMBED THROUGH APPROXIMATELY 100 FEET ABOVE THE GROUND AFTER TAKEOFF, TWO PROPELLER BLADES SEPARATED FROM THE RIGHT ENGINE PROPELLER ASSEMBLY, PENETRATING THE NOSE SECTION OF THE AIRPLANE. THE PILOT SHUT DOWN THE RIGHT ENGINE, FEATHERED THE REMAINING PROPELLER BLADE YAND RETURNED TO LAND AT THE DEPARTURE AIRPORT WITHOUT FURTHER INCIDENT. POST-ACCIDENT EXAMINATION REVEALED THE BLADES FAILED DUE TO METAL FATIGUE. AN ENGINE TEARDOWN AND CRANKSHAFT COUNTERWEIGHT INSPECTION REVEALED NO EVIDENCE OF PRE-IMPACT MALFUNCTION/ANOMALY. THE PROPELLER ASSEMBLY HAD A TOTAL TIME OF ABOUT 3,229 HOURS, INCLUDING APPROXIMATELY 295 HOURS SINCE OVERHAUL AND INSTALLATION ON THE ACCIDENT AIRFRAME.
Probable Cause: THE INADEQUATE DESIGN OF THE PROPELLER HUB ASSEMBLY WHICH RESULTED IN METAL FATIGUE AND PROPELLER BLADE SEPARATION DURING INITIAL CLIMBOUT.
Accident investigation:
 |
|
Sources:
NTSB CHI92LA031
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 19-Mar-2024 12:57 | ASN Update Bot | Added |
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