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| Date: | Thursday 2 July 1998 |
| Time: | 04:35 |
| Type: |  Beechcraft 100 King Air |
| Owner/operator: | LaLoche Airways |
| Registration: | C-GNAA |
| MSN: | B-24 |
| Year of manufacture: | 1969 |
| Fatalities: | Fatalities: 0 / Occupants: 5 |
| Other fatalities: | 0 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Patuanak, SK -
 Canada
|
| Phase: | Taxi |
| Nature: | Ambulance |
| Departure airport: | Patuanak, SK |
| Confidence Rating: |  Information verified through data from accident investigation authorities |
The crew of C-GNAA, a Beech King Air, were taxiing for takeoff on the gravel strip at Patuanak, SK. The flight was a medevac flight with 5 people on board. During the taxi, the nosewheel of the aircraft went into a sinkhole, breaking the nosegear fork assemby and collapsing the nosegear. Both propellers struck the ground, disabling the aircraft on the runway. There were no reported injuries.
The failure of the fork was at the weld assembly as identified in Airworthiness Directive 87-22-01 R1. There was a 150 hour repetitive requirement to check the weld for cracks by means of a liquid penetrant inspection, and this was done by a NDT firm in Fort McMurray 120 hours prior to the accident. When the nose gear of C-GNAA entered the soft area, it jammed hard over against the steering stop and imparted a twisting moment to the weld. Preliminary indication is that the weld failed in overload.
It had been known for years that the Patuanak strip is sandy and has loose gravel areas. When the weather is hot and dry, soft spots will appeared, especially near the sides of the runway. The strip was not designed for aircraft with narrow tires such as a King Air.
Sources:
ICAO
History of this aircraft
Other occurrences involving this aircraft
| 16 January 2009 | C-GNAA | SkyNorth Air | 0 | Island Lake, MB (CYIV) | |
sub |
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 21-Sep-2024 18:58 | ASN | Added |
| 21-Sep-2024 19:52 | ASN | Updated [Time, Operator, Location, Nature, Departure airport, Narrative, ] |
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