ASN Wikibase Occurrence # 368044
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| Date: | Friday 8 September 1989 |
| Time: | 17:00 LT |
| Type: |  Grumman G-164A Ag-Cat |
| Owner/operator: | Terry Flying Service |
| Registration: | N7498 |
| MSN: | 945 |
| Total airframe hrs: | 6833 hours |
| Engine model: | P&W R-1340-AN-1 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Franklin, LA -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Agricultural |
| Departure airport: | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE AG PILOT HAD JUST FINISHED SPRAYING A LOAD OF CHEMICALS & WAS IN A TURN TO LOOK AT THE NEXT FIELD TO BE SPRAYED, WHEN THE AIRPLANE STARTED TO VIBRATE VIOLENTLY. HE REDUCED POWER & TURNED TO LINE UP WITH A TURNROW FOR A FORCED LANDING. AFTER TOUCHDOWN, THE ACFT ROLLED ABOUT 300 YARDS ON SOFT TERRAIN, THEN NOSED OVER AS THE PLT APPLIED BRAKES TO AVOID A DITCH. A INVESTIGATION REVEALED THAT 13 INCHES OF ONE PROPELLER BLADE WAS MISSING. A EXAM OF THE FRACTURE SURFACE SHOWED INDICATIONS OF A PRE-EXISTING CRACK ON THE LEADING EDGE OF THE BLADE.
Probable Cause: FATIGUE FAILURE OF THE PROPELLER BLADE, WHICH RESULTED IN SEPARATION OF THE BLADE'S TIP AND SEVERE ENGINE VIBRATION. THE SOFT TERRAIN WAS A RELATED FACTOR.
Accident investigation:
 |
|
Sources:
NTSB FTW89DRD14
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 23-Mar-2024 06:32 | ASN Update Bot | Added |
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