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Bombardier DHC-8-402 Airtanker Conversion Experiences Engine Oil Pressure Loss During Certification Flight Test

Tofino, British Columbia, 5 nm W, CA

On June 7, 2005, a Bombardier DHC-8-402 C-FBAM operated by Cascade Aerospace Inc. was involved in an aviation accident near Tofino, British Columbia, 5 nm W, CA. This summary draws on records from the Transportation Safety Board of Canada (TSB); 1 related events involving the same aircraft type or operator are linked below.

Sourcesthe Transportation Safety Board of Canada (TSB)Primary reportUpdated 2026-09-13Data APIEditorial standards

A Bombardier DHC-8-402 (C-FBAM) undergoing airtanker certification testing near Tofino, BC, experienced low engine oil pressure during a push-over maneuver. The No. 2 propeller overspeeded and was feathered, forcing a return to Abbotsford on one engine.

Incident Overview and Flight Details On 1331 Pacific daylight time, a Bombardier DHC-8-402 with registration C-FBAM and serial number 4040 departed Abbotsford International Airport in British Columbia for a certification flight test near Tofino. The aircraft, modified by Cascade Aerospace Inc. for air tanker operations, carried two pilots and two contract flight test engineers. The test program aimed to evaluate stick force per g and handling characteristics during a push-over to 0 g with a water/retardant load on board. The flight was the eighth in a supplemental type certificate (STC) development program for the Q400 Airtanker conversion, operating under a Transport Canada Flight Permit - Experimental. The aircraft departed at a gross weight of 68,200 pounds, configured at the most aft center of gravity limit for the test.

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