Une Histoire d’Hélices – Vol PNG 1600

28 Mar 2023 · 32 min
31:39

Narration of P1G Flight 1600, a Dash 8 turboprop accident in Papua New Guinea on 13 November 2011. The video describes the flight crew (captain: 64 years old, ~18,000 total hours, ~500 on Dash 8; first officer: ~40s), aircraft maintenance shortcomings (failed yaw damper, inoperative autopilot), and aggressive descent through convective weather with high vertical rates (~4,200 ft/min). Pilots left propellers in cruise pitch, then reacted to an overspeed alarm at about 10,000 ft by pulling the power levers rapidly into a ground-idle range; this induced a propeller overspeed/moulinage (prop RPM reportedly jumping well above normal limits) that fatally damaged both engines and left the aircraft without effective propulsion. The crew attempted a forced landing/ditch into a riverbed with rocks; the airframe burned. Of 32 people on board (3 crew, 29 passengers) all three crew survived and one passenger escaped; 28 passengers were killed. The narrator also explains propeller aerodynamics and modes (tractive, transparent, braking, zero-power, and mouliné) and discusses maintenance/governor reconditioning issues discovered during the investigation.

Questions this video answers

13 November 2011

Dash 8 turboprop (early variant)

Flight 1600, operator P1G

32 people total: 3 crew and 29 passengers

4 survivors (all 3 crew + 1 passenger); 28 passenger fatalities

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