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DA40 TDI Crashes in Sweden north of Gothenburg

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DA40 TDI Crashes in Sweden north of Gothenburg

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Old 7th Feb 2008, 20:11
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DA40 TDI Crashes in Sweden north of Gothenburg

A DA40 belonging to SPU crashed due north of Gothenburg.

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Old 7th Feb 2008, 20:15
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False landing at night? if so congratulations.
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Old 7th Feb 2008, 20:33
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In Sweden we do PPL darkness training due to the many hours of darkness during winter time. The student was doing such training...
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Old 7th Feb 2008, 20:41
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If it was a problem with the aircraft the student did a very good job of a false landing?
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Old 7th Feb 2008, 21:20
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On a news website a journo in his infinite wisdom decided it would be prudent to stick this photo next to the story:



Not content that would be sufficent to confuse the general public, he also chose to do a cut and paste job on the brief incident description

An Alpine Air owned turboprop Beechcraft 99 is shown after it crash landed shortly after midnight Friday, Dec. 29, 2006, in a pasture south of Caputa, S.D., about eight miles southeast of Rapid City Regional Airport. The plane struck the ground, lost both main landing gear and skidded about 100 yards on its belly before coming to rest. The pilot was hospitalized for observation in Rapid City after the early morning crash of the twin-engine airplane. (AP Photo/Rapid City Journal, Steve McEnroe)
I think a suitable gong should be awarded.
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Old 7th Feb 2008, 21:41
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According to the Göteborgs-Posten newspaper web site it was an engine problem that caused the pilot to attempt a landing on a road, knocking down three lamp standards. One wing struck a car but the driver was taken to hospital without serious injury. The pilot was also slightly injured but declined hospital treatment.
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Old 7th Feb 2008, 22:02
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knocking down three lamp standards. One wing struck a car but the driver was taken to hospital without serious injury. The pilot was also slightly injured but declined hospital treatment
If that really is what happened they are all very, very lucky. The DA40 has a big (39'+) wingspan but I'm surprised it was strong enough to knock down three streetlights.
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Old 7th Feb 2008, 22:09
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Aren't lampposts supposed to bend or break easily, in case they're hit by a car?

Still, knocking three out, plus a car, without serious injury to the pilot impresses me.

I just saw that our own DA-40 TDI is finally back in the air after I don't know how many months on the ground. My last flight was 7th July, so I have to do a checkflight before I can take her up again on my own (club policy for this plane is 6 months rolling currency).
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Old 7th Feb 2008, 22:20
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A post from Sternone must soon be due.... !
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Old 7th Feb 2008, 22:23
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Papa Charlie! Shhhhhhhhhhh!
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Old 7th Feb 2008, 22:37
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Sternone's a bit like Beetlejuce, Say his name 3 times and he appears.
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Old 8th Feb 2008, 01:48
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Smile

Sterone,Sterone,Sterone,
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Old 8th Feb 2008, 05:51
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Pretty cool pilot, after making the emergency landing on a straight stretch of road, he managed to steer it onto an exit ramp!
The car that was struck was travelling in the opposite direction, by the way. Must be terrifying for a motorist to be suddenly confronted by an approaching aircraft in the opposite carriageway - no wonder he/she went to hospital (I would guess mainly to recover from shock - the injuries are reported to be minor) after the wingtip smashed the windscreen!
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Old 8th Feb 2008, 05:57
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was strong enough to knock down three streetlights
According to vg.no the left wing lost the struggle with the streetlights and was "torn off". However this picture suggests that only the left wingtip got sheared off.


Lights still standing apparently.

The really interesting bit of info i got from www.aftonbladet.se was this:

Med bara några kilometer kvar till flygplatsen Säve i Göteborg slogs flygplanets två datorer ut, samtidigt. Motorn gick på tomgång och kunde inte fås igång igen.

Piloten bedömde att han måste nödlanda och svängde söderut. Han valde att landa på 45:an som är fyrfilig vid Nödinge.
http://www.aftonbladet.se/nyheter/article1791063.ab

Rough translation: "With only a few kilometers left to go to Säve (ESGP) in Gothenburg the aircrafts two computers where knocked out, simultaneously. The engine was ideling and could not be reved up again"

Now, I still have a steel cable from the plunger to the carb on the aircraft I fly. What do you think the above quote actually mean?
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Old 8th Feb 2008, 07:08
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Originally Posted by M609
Rough translation: "With only a few kilometers left to go to Säve (ESGP) in Gothenburg the aircrafts two computers where knocked out, simultaneously. The engine was ideling and could not be reved up again"

Now, I still have a steel cable from the plunger to the carb on the aircraft I fly. What do you think the above quote actually mean?
It means that the DA40-D is a fly-by-wire aeroplane, at least as far as the engine is concerned. If both the primary and backup ECUs fail, it becomes a glider. Needless to say, the redundancy should make that an unlikely event, so I'm sure a lot of people will be wondering what went wrong here.
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Old 8th Feb 2008, 07:11
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I haven't flown a DA40 for a while, how long does the battery last if the alternator gives up the ghost?

Ian
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Old 8th Feb 2008, 07:26
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I think it is 45 mins minimum......

Good testament to the strength of these things though. Had this been in a Mooney () probably both legs would have been broken at the very least.
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Old 8th Feb 2008, 08:31
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Nice one EA! I'm pretty sure the emergency back-up battery lasts 30mins. The POH is either at the FTO or at Bristol with the aircraft so I can't check (the shortest distance from me is about 135 miles).
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Old 8th Feb 2008, 08:47
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Rough translation: "With only a few kilometers left to go to Säve (ESGP) in Gothenburg the aircrafts two computers where knocked out, simultaneously. The engine was ideling and could not be reved up again"

Now, I still have a steel cable from the plunger to the carb on the aircraft I fly. What do you think the above quote actually mean?
I am just speculating here based on what I've heard from fellow pilots and engineers on the DA-40 TDI and the DR400-135CDI, and based on the problems we've experienced with our own ones.

First cause might be a defective load sensor - the "throttle" in previous-century terms. This is, in effect, an electric potmeter but somehow it doesn't work as reliably as you would expect from something that was already developed in the 19th century. And there's only one in the aircraft, so even though the rest of the system doesn't have a single point of failure, this one does. Ours has been found defective and has been replaced, but it took a long time to diagnose.

Another cause might have been the ECU Auto/swap switch. If no guards are installed and no HSI reset switch installed left of it, this switch is very exposed to feet and knees of pilots getting in and out of the LHS. This is what a mate of mine had in the circuit somewhere in the UK. The ECUs would swap continuously, leading initially to surges of power and eventually to an undocumented failsafe mode where you would get 0% power with the load lever at 0%, but 100% power at any other setting.

The third problem is something we've had in a Robin Ecoflyer, and for which a mandatory SB for the Thielert 1.7 has now been brought out. This is concerning the oil nozzles that spray oil on the bottom of the pistons for cooling. One of them broke off, leading to a partially seized piston and a gradual loss of power. Aircraft landed in a field, no further casualties to persons or aircraft, fortunately.

If, as the report says, the engine was "idling", I assume that the computers were still running. This engine cannot, as far as I know, idle without the computers since the fuel injection is timed by them. However, we're talking journalists here and they also may have meant "windmilling" which I think would happen if both computers would fail.

I haven't flown a DA40 for a while, how long does the battery last if the alternator gives up the ghost?
It depends on whether the aircraft has an IFR or VFR kit. I haven't checked the full POH but my emergency checklist suggest 30 minutes on the essentials bus (one radio) and one hour on the battery bus (attitude gyro and cabin floodlight). As far as I remember, if the aircraft is IFR, it has an ECU backup battery which kicks in automatically and should have juice for 45 minutes of ECU running.

Basically, any alternator caution or other indication that there's something wrong with the electrics is grounds for an immediate landing at the nearest airport, and to conserve as much electricity as you can in the meantime.

Pretty cool pilot, after making the emergency landing on a straight stretch of road, he managed to steer it onto an exit ramp!
Not unheard of. The 777 that landed "short" at Heathrow a few weeks back took the first exit too, proving that you can land a 777 on 400 meters of grass.
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Old 8th Feb 2008, 17:57
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Second time in three years this particular aircraft makes a forced landing following an engine failure... Last time it could be repaired, looks like it's done for this time...

Engine failure at night, at 1,500 ft, with a 22-year old PPL training for his NQ at the controls... Scary as hell, outstanding outcome!
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