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Post by hardyakka on Jun 6, 2009 17:45:33 GMT 12
It was TYS. Engine failure. Forced Landing on Tauranga golf course. Pilot fine. Some damage but not too serious. Will report back when things settle down a bit.
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Post by fletcherfu24 on Jun 6, 2009 19:19:46 GMT 12
FORE......   |
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Post by beagle on Jun 6, 2009 20:47:20 GMT 12
close to the 19th ??
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Post by haughtney1 on Jun 6, 2009 23:11:16 GMT 12
Glad there were no serious injuries, and it looks like a good job done.
You can replace panels etc..you can't replace people
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Post by Bruce on Jun 7, 2009 9:51:56 GMT 12
Replace your Divet......
Looks like the forced landing was done extremely well, and the good solid Yak has stood up to it too - Useful having the wheels sticking out underneith!
Congrats to the pilot and hope TYS gets better soon.
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Post by flyjoe180 on Jun 7, 2009 12:10:18 GMT 12
Great job, glad to see noone hurt.
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Post by Dave Homewood on Jun 7, 2009 13:37:18 GMT 12
Was that the one from Te Kowhai? If so, was it JP flying? I'm very glad no-one was hurt, must have given a few golphers a fright.
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Post by fletcherfu24 on Jun 9, 2009 14:45:42 GMT 12
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Post by Bruce on Jun 9, 2009 14:51:19 GMT 12
I like the bit about the undercarriage being partly down!  |
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Post by fletcherfu24 on Jun 9, 2009 15:09:53 GMT 12
I hope he paid his green fee,they're very strict on that course,if he didn't pay he wont be allowed back next time..  |
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Post by ErrolC on Jun 9, 2009 17:48:45 GMT 12
I hope he paid his green fee,they're very strict on that course,if he didn't pay he wont be allowed back next time.. How common is it to land a Yak-52 with the wheels 'up' without bending the prop? If you land on a runway do you normally avoid any damage? |
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Post by Radialicious on Jun 9, 2009 19:38:35 GMT 12
A very well done. Years ago I heard that Yak-52's had a light dotted line painted chordwise at a certain point on each blade. The story was that if the machine suffered a wheels up landing, the wooden blades could be sawn off at that point and the aircraft flown away for repair once back on her feet.
Hardyakka may be able to answer to this but I was told that the design of the undercarriage was so that as a trainer, the aircraft could give students exposure to retracts, but protect the aircraft if the gear was forgotten prior to landing. I am curious as to what the difference is in cruise performance with the gear up or down.
Our Beech 1900D has slightly protruding wheels on all three axles for the same reason. In our manuals and SOP's we are reminded that in a wheels up landing, we need to remember to use brakes to both steer and stop!
Again, well done.
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Post by hardyakka on Jun 11, 2009 13:50:45 GMT 12
ErrolCI guess it depends if the prop is turning at touchdown or not. If it is still spinning then it will be damaged. Being wooden, it will snap rather than bend. In JP's case the prop stopped in the horizontal position and was undamaged. The story around the traps about sawing off the ends of a damaged prop after a wheels up is one I'm not sure about. There is no "tear-along-the-dotted-line" markings on any yak prop I've seen. I don't think I'd try it myself but it may be possible. I've heard a few "I knew a guy who did it..." stories but I haven't seen any first-hand evidence.  RadialiciousThe normal cruise for a Yak52 at 70% is about 235km/h. Gear down at those power settings gets you along at about 20km/h slower. The glide ratio is probably more important. 7-to-1 with gear up and 5-to-1 with gear down. Hence the pilots' handbook recommending gear-up for engine failure. I went over to Tauranga to have a gander at the plane yesterday. To my non-expert eye, it didn't look too bad at all. A few small bangs and dings (and the lower half engine cowl looks decidedly second-hand). We need to get the insurance dude and an engineer dude to give us an expert opinion. JP was most impressed with the expertise of the crane guys who brought their HiAb along to recover the plane. It just got lifted up, the undercart was extended, the plane was towed to the golf course fence on its own gear, it got lifted over the fence into the industrial zone next door. The it was just towed down the road to the airport and popped into a hangar. Job done.
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Post by yak2 on Jun 11, 2009 15:16:57 GMT 12
Pilot did well. Reasons to land gear up include reduced risk of the aircraft turning over, and less likelyhood of damaging the gear itself. In the Yak, the brakes still work when the gear is retracted. Think the lines on the prop story is an urban myth. I am sure it would work if no alternative, but understand the lines are used to assist with blade alignment. My Yak initially vibrated a lot at certain RPM settings and we thought it was because the blades were out of balance. Turned out to be blade misalignment. What a delightful aeroplane. Like a little Russian ballerina (with a deep voice) |
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Post by Dave Homewood on Jun 11, 2009 16:26:34 GMT 12
Would landing on grass with the wheels up like he did also make the amount of space used before stopping a lot shorter, or does it run along with similiar momentum to a wheels down landing?
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Post by yak2 on Jun 11, 2009 17:14:06 GMT 12
Good question Dave. If the landing surface was firm and flat, I imagine the rolling distance would be similar. A technique used in a normal landing roll is to keep the nosewheel clear and sit the aircraft on its main wheels for as long as possible, and use aerodynamic braking assistance. In this case the aircraft may have 'hobby-horsed' on the undulating fairway causing the cowling to dig in, which would shorten the rolling distance. They are one rugged little bird.
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Post by hardyakka on Jun 11, 2009 21:28:44 GMT 12
Yep. There was a gully on the fairway just after the first touch-down point. The plane became (almost) airborne again, but not quite enough, and ended up with a chin strike on the rising ground on the other side of the dip.
The brakes on the retracted undercart were used to steer the plane to the side of the fairway as it rolled to a stop so that the golfers could continue playing (true story).
Actually, one funny thing... the air scoop under the cowling took a perfect divot from the fairway that looks for all the world like a piece of rolled-up instant lawn. I wonder if I should take it back to the course? (under the replace all divots rule of golf).
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Post by Dave Homewood on Jun 11, 2009 22:26:45 GMT 12
It would be hilarious to box it up and post the divet to them.
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Post by haughtney1 on Jun 14, 2009 4:12:21 GMT 12
Not the first time JP has had a scrape to deal with in a yak. I remember him having problems with a stuck elevator on a post maintenance test flight.
Fortunately, his considerable skill got in back on terra firma in one piece.
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Post by baz62 on Jun 14, 2009 8:56:07 GMT 12
Woah a stuck elevator? Engine failure I could live with but stuck controls.........I've read of battle damaged aircraft having similar issues and usually the trim controls give enough control to save the day!
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