Cessna 208 - Engine Failure in KingFisher

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Beech Driver
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Cessna 208 - Engine Failure in KingFisher

Post by Beech Driver » Mon Jan 25, 2016 7:32 am

I saw that this has not been posted yet

http://tinyurl.com/zetsjoh

TSB#A15C0166: The North Star Air Ltd Cessna Caravan 208B, registration C-FIXS, was departing Kingfisher Lake, ON (CNM5) for Pickle Lake, ON (CYPL) with only the pilot on board. During the takeoff run on Runway 12 at approximately 60 to 70 knots, the pilot noticed the torque gauge was only indicating 1000 ft-lbs and that the oil pressure had decreased below the yellow arc. The takeoff was rejected and the aircraft came to a stop at the threshold of Runway 30. The engine (Pratt & Whitney Canada PT6A-114A) subsequently failed prior to the pilot securing the engine. The engine could not be restarted and the aircraft was towed off the runway. The fuel control unit (FCU) was found to be malfunctioning and was sent to an overhaul service provider for further testing.
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Last edited by Beech Driver on Mon Jan 25, 2016 3:19 pm, edited 2 times in total.

goingnowherefast
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Re: Engine Failure

Post by goingnowherefast » Mon Jan 25, 2016 3:09 pm

That's a stroke of luck! Best place for engines to fail is on the ground at slow speed.
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Confliction
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Re: Cessna 208 - Engine Failure in KingFisher

Post by Confliction » Mon Jan 25, 2016 3:35 pm

Good eye on the gauges..
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pelmet
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Re: Cessna 208 - Engine Failure in KingFisher

Post by pelmet » Mon Jan 25, 2016 6:03 pm

I wonder if the engine guage was checked to a change in sound or decrease in acceleration rate or just checked. Whatever the reason, a good outcome for all.
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Boreas
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Re: Cessna 208 - Engine Failure in KingFisher

Post by Boreas » Mon Jan 25, 2016 6:38 pm

If the prop maintained its RPM - and it probably did - there wouldn't be a significant change in engine noise. 1000 ft-lb however, is about half of your T/O power, so thats definitely something one would notice.

Regardless, good on them for catching it.
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Re: Cessna 208 - Engine Failure in KingFisher

Post by esp803 » Mon Jan 25, 2016 7:11 pm

He also would have gotten a low oil pressure CAS message once the oil pressure decreased below the yellow. That being said if you're at 1000lbs of torque, your acceleration would be... Well... Poor. Good job on the reject, caravans glide like washing machines when the stove goes.

E
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Meddler
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Re: Cessna 208 - Engine Failure in KingFisher

Post by Meddler » Mon Jan 25, 2016 7:28 pm

They glide better than some things..supercubs and washing machines. Can't think of much else.

Anyone else wonder how the fcu failure caused low oil pressure? I hope they didn't hook on a new fcu and send him back out :shock:
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goingnowherefast
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Re: Cessna 208 - Engine Failure in KingFisher

Post by goingnowherefast » Tue Jan 26, 2016 5:54 am

Ng really low? I'm guessing he saw the torque as it was falling past 1000lbs, the FCU had already mostly quit and the compressor was maybe 20-40%? Thus the oil pump spinning too slow as well. FCUs run mostly on PFM, but who knows what sort of fuel delivery it's causing while failing and various pressures within the engine are doing weird things due to the initial problem.
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oldncold
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Re: Cessna 208 - Engine Failure in KingFisher

Post by oldncold » Tue Jan 26, 2016 6:04 pm

KUDOS' TO CREW if he gotten airborne them juniper are :smt003 hard this time of year
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Meatservo
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Re: Cessna 208 - Engine Failure in KingFisher

Post by Meatservo » Wed Jan 27, 2016 5:18 am

Yeah- some on here will jump all over you for saying "Kudos to the crew", but I echo the sentiment. We all know there are boobs out there who would shave tried to get it into the air. I say well done, too.
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If I'd known I was going to live this long, I'd have taken better care of myself

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