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-   The Pacific: General Aviation & Questions (https://www.pprune.org/pacific-general-aviation-questions-91/)
-   -   PT6 Failure (https://www.pprune.org/pacific-general-aviation-questions/400433-pt6-failure.html)

Howard Hughes 2nd Jan 2010 05:13

I second Wally's comments, it's great to work somewhere where even the slightest abnormality is taken seriously!

Keep up the good work guys!:ok:

Super Cecil 2nd Jan 2010 05:28

There have been failures to things other than bad maintenance and throttle bashing, and to resonably low hour powerplants.

Howard Hughes 2nd Jan 2010 05:42

Occasionally things break without warning, but if you take care of the areas you can control, then you are minimising the risk.

Of the six people I know who have had engine failures in turbines, five were FCU failures! :eek:

VH-XXX 2nd Jan 2010 05:59


where even the slightest abnormality is taken seriously!
like when the second backup AH fails, bummer.

manymak 2nd Jan 2010 07:34


In respect to 'Van engine failures, I wonder how many of those had daily compressor washes, engine trend monitoring systems and regular boroscope inspections?
If van's (or any S/E turbine) are operating as part of a ASETPA (Approved Single Engine Turbine Powered Aircraft) approval it is a requirement they undertake daily comp washes and have trend monitor systems fitted to those aircraft.

Lasiorhinus 2nd Jan 2010 07:42

Wasn't VH-DVS, was it? If so, it's the second engine failure in 18 months- and the first one had absolutey nothing to do with fuel.

manymak 2nd Jan 2010 07:48


Wasn't VH-DVS, was it? If so, it's the second engine failure in 18 months- and the first one had absolutey nothing to do with fuel.
Didn't the ARO find turbine power blades on the rwy? :eek:

werbil 2nd Jan 2010 08:45

Caravan Pilots • View topic - Caravan Accident contains some interesting comments regarding an engine failure in a C208.

Arnold E 2nd Jan 2010 08:46

XXX
 
If the second A/H fails, please explain to me how you handle that?:confused:
To be honest, I am interested in how you know the second A/H HAS failed.

werbil 2nd Jan 2010 09:28

Arnold E:

Secondary instruments (which is the ONLY way you can tell a single AH has failed or determine which AH has failed if you have 2):

Turn cordinator & dg (compass in worst case) for lateral.
Power plus performance for pitch.

Big beef with my training was did a bit of limited panel work, but there was no training on how to diagnose a suspect insturment.

One AH failure I had was obvious - the thing was showing a roll rate of about 1400 degrees per second. You could even feel the vibration through the airframe.

werbil

PS - the most insidious instrument failure I've had was a partial blockage of a pitot tube - airspeed indicator was undereading by about 20 knots. At least with a blocked static system the constant altitude indication gives you a very good hint to treat the airspeed indication with extreme caution.

VH-XXX 2nd Jan 2010 10:18

Arnold, there was sarcasm in my post. I said second backup, as in AH #3.

Have a mate that flies and he was telling me how he comes to work for the day, checks everything, finds the tiniest of issue (eg failed second backup), declares ac us, collects his $500 and goes home again. It would be good to think that all operators were like that. (sorry thread drift)?

Arnold E 2nd Jan 2010 10:25

the thing was showing a roll rate of about 1400 degrees per second.
An A/H showing a roll rate of 1400 degrees /sec?? please explain??:confused:

Do you mean it had toppled?
Just for information, an A/H is not a rate gyro.

werbil 2nd Jan 2010 11:07

The AH was indicating that the aircraft was rolling completely around the longitudinal axis about 4 times each second - hence the calculated roll rate.

It had failed - I'm pretty sure it ended up just lolling about when it stopped spinning - I can't remember for sure - it did happen about 15 years ago. It's funny the bits you remember - I could show you on a map where it occured within a radius of a about half a mile - I was climbing at the time - possibly in a shallow right hand turn.

Arnold E 2nd Jan 2010 11:16

Hmmm, ok gymbal lock.

YMEN 2nd Jan 2010 14:56

It was VH-UMV, not VH-DVS!

YMEN 3rd Jan 2010 01:13

Ah you jumped with SAM! Top Bloke!

BackdoorBandit 3rd Jan 2010 03:17

Al's dodgy vans are everywhere. It is no surprise that the last two letters of the rego are "MV".

littlehurcules 3rd Jan 2010 06:27

Stay well clear of any plane ending with "MV"

Like the man - the planes are dodgy as well

beaver_rotate 3rd Jan 2010 11:14

Big Al has his own McRnav's into Tully he's making the kids fly.

I mean it's not like QLD's HIGHEST LSALT is nearby or anything.

CASA know and have been watching, many a trip to Tully one of the CS FOI's told me.

So boys, if you have these approaches loaded into your Vans, I would delete them quick smart (if you get my drift) ;)

j3pipercub 3rd Jan 2010 12:44

So it was U hey? Hmm interesting. All of the MV's were on a system of maintenance, I believe to try and extend the life of the donk, last I heard M was past 6k on its donk. Thought with the exception of O, U had the lowest time engine.

Something to do with the cool starts and the short-circuiting of the over-voltage protection (32 volt battery cart if memory serves). Just don't touch the avionics masters with the cart plugged in, lest the magic blue smoke start to pour out of the radion stack, or so I've heard.


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