View Full Version : 172 down, Dunsop Bridge
Fox Four
2nd Aug 2012, 17:31
Crew reported well.
fisbangwollop
2nd Aug 2012, 17:52
Not many flat fields around there !!
JUST-local
2nd Aug 2012, 18:50
Just spoke to one of the crew, as said both fine.
Centurion diesel engine powered he said it just stopped dead no warnings, plenty of fuel etc.
Minor damage due to very wet field after a good landing. :ok:
Pilot DAR
2nd Aug 2012, 19:03
I know nothing about this event.
However, while recently doing a flight test program on a DA-42, I had an engine problem, so I flew it for help. I discussed the problem with the mechanic, and during this discussion, he pointed out a few of the characteristics of the Thielert which would allow a sudden stop situation to occur. They were soberingly simple.
There are many cases where I would want the failure to fail to a running condition, even if engine control, or condition were reduced. The notion that any one of a number of simple failures could cause the engine to stop instantly puts the occupants, aircraft, and the engine in much greater peril.
When the Thielerts work, they're wonderful. When they do not, it seems much worse that the much maligned Lycontinentals... I'll be interested to read the report on this one....
But, I sure like diesel.....
Privatecaptain
3rd Aug 2012, 08:45
Centurion diesel engine powered he said it just stopped dead no warnings, plenty of fuel etc.
Do you know if it was a 1.7 Centurion/Thielert Diesel engine or a 2.0 or 2.0s engine?
A and C
7th Aug 2012, 08:29
I to would like to know what happened to this engine, it would not stop for no reason and the facts will be recorded in the data logger for all to see.
he pointed out a few of the characteristics of the Thielert which would allow a sudden stop situation to occur. They were soberingly simple.
Please share. I fly a DA40-D ...
A and C
7th Aug 2012, 16:30
I to would like the benefit of DAR's knowlage on this subject, I can't think of an electrical problem that will stop the engine ( now they have the FADEC back up battery fitted) due to the fact that all the essential systems are duplicated.
There are mechanical issues that would stop the engine with a single failure but no more so than with an AVGAS engine................. Well so much for the theory perhaps DAR can enlighten us with some real world wisdom.
Pilot DAR
7th Aug 2012, 23:19
I am not at all an expert on the Theilert engine, so there could be fact which superceeds what I was told.... However...
Back in June, I was test flying a modified DA-42, including 64 3 minute climbs at various power settings. The right engine seemed to run okay, but at fulll power, as I slowed, and entered the climb, it's power would drop off. at 5000 feet, full power could drop as low as 83% load. when I sped up, it would come up a little, but not to the 100% of the left engine. So I took it for maintenance.
The Diamond service center mechanic gave me a bit of a tour around the engine (as he replaced the offending turbo waste gate controller). He showed me a two conductor electrical connector which was associated with the prop governor. He explained that sometimes the fork type female connectors in there would virbrate to have a larger opening. With this, the signal to the prop could be interrupted. He told me that even a momentary interruption in this signal would result in an instant engine shutdown, and no resart, unless the connector fixed itself.
He said that this was an example, and not the only one.
I really like the way the engine ran, but if that lower level of integrity is the cost, I'd rather have the Lycontinental for the cost....
The SMA diesel has a work around for this, so it will run without power or FADEC. I just wish tha SMA would fill the order I have placed for one!
Diesel and FADEC are the future, but we're not quite there yet....
charliegolf
8th Aug 2012, 10:22
Why is fadec needed at all? Do i have it on my VW?
CG
Pilot DAR
8th Aug 2012, 17:56
Do i have it on my VW?
My last two VW diesels are FADEC. Ask your service man if the gas pedal is connected to the engine, or the computer - you might be surprised!
A and C
8th Aug 2012, 21:24
Its back to the course notes for me to check that one out but I would be surprised if just one electrical connector malfunctioning would result in a total shut down, but your statement deserves further investigation.
ndr1804
9th Aug 2012, 07:47
Hi anyone any ideas of reg of this aircraft......
A failure of the Propeller Pitch Control Valve (PPCV) will cause an instant shutdown and feather.
JUST-local
9th Aug 2012, 17:50
REG:- D-EFUC
ndr1804
10th Aug 2012, 15:37
Many thanks guys.
percy prentice
10th Aug 2012, 16:58
On the registration should the E have been an O in hindsight ?:)
PP - OK had it been nearer Yorkshire...
owwnav
11th Aug 2012, 17:08
Just wondering if anymore info has emerged on the cause of the engine stoppage? Also what engine was it 1.7/2.0/2.0s ? Thanks would like to know more as I fly a 2.0 equipped 172.
ndr1804
11th Aug 2012, 19:17
All joking apart maybe it should have been an "O" instead of an E. but someone has saves 2 peoples lives here we could well be talking about a fatal. Don't care how much we practice PFLs its still a good piece of airmanship.
Remember that the person that owns the aircraft and the passenger that thinks he can fly.......!!!!!!!!!!!!
Duckeggblue
11th Aug 2012, 21:02
Remember that the person that owns the aircraft and the passenger that thinks he can fly.......!!!!!!!!!!!!
:confused:
Pilot DAR
11th Aug 2012, 22:22
http://images.ibsrv.net/ibsrv/res/src:www.pprune.org/get/images/smilies/confused.gif
Me too....
ndr1804
24th Sep 2012, 17:23
MMMMMM long story :oh:
Duckeggblue
24th Sep 2012, 18:52
MMMMMM long story
Even more :confused: