ASN Wikibase Occurrence # 352870
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Date: | Sunday 8 August 1999 |
Time: | 07:45 LT |
Type: | Weatherly 201B |
Owner/operator: | Private |
Registration: | N197SK |
MSN: | 1645 |
Total airframe hrs: | 847 hours |
Engine model: | P&W R-985 |
Fatalities: | Fatalities: 0 / Occupants: 1 |
Aircraft damage: | Substantial |
Category: | Accident |
Location: | Oberlin, KS -
United States of America
|
Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
Nature: | Agricultural |
Departure airport: | , KS |
Destination airport: | |
Investigating agency: | NTSB |
Confidence Rating: | Accident investigation report completed and information captured |
Narrative:The airplane impacted a muddy field following a loss of engine power during an aerial application. The Bendix NA-R9B carburetor fulcrum screw and the carburetor float pivot pin exhibited chatter marks. The fulcrum screw was removed after turning it 1/2 of a turn. The fulcrum screw safety wire was broken. The NA-R9B float carburetor technical overhaul manual states that the fulcrum screw is to be torqued to a value of 100-120 in-lbs.
Probable Cause: Engine failure due to an undertorqued carburetor fulcrum screw. Contributing factors were the muddy terrain and the low altitude of the aerial operation.
Accident investigation:
|
| |
Investigating agency: | NTSB |
Report number: | CHI99LA297 |
Status: | Investigation completed |
Duration: | 1 year and 5 months |
Download report: | Final report |
|
Sources:
NTSB CHI99LA297
Location
Revision history:
Date/time | Contributor | Updates |
09-Mar-2024 07:51 |
ASN Update Bot |
Added |
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