You see , the dirty compressor part does to a bit make sense.
We do a compressor wash every 100 hours inspection and I did have 20 degrees colder starts after the wash.
The battery and itt calibration for sure I can take off the list as well as the bleed air leak.
Andy
C-208B start temp
Moderators: North Shore, sky's the limit, sepia, Sulako
Re: C-208B start temp
you didn't have a hot section completed over the winter did you?
or a new hot section installed?
new FCU installed?
fuel nozzles replaced?
was there any winter work completed to the engine?
or a new hot section installed?
new FCU installed?
fuel nozzles replaced?
was there any winter work completed to the engine?
Re: C-208B start temp
My self no,
I will Inquire about the engineer.
Andy
I will Inquire about the engineer.
Andy
Re: C-208B start temp
Don't over think it! Sounds like the brushes are worn. Upgrading the SG will only make a difference because it will come with new brushes. From my experience the 200SGL119Q likes to do strange things even with half life brushes. It's probably why they don't allow field replacement of the brushes, only an approved O/H facility...
Yes your start temps are within limits, but you're operating a single engine don't forget, you can cook a 114A pretty easily. Ever see what happens to the hot section when you miss the low idle gate accidentally then then put the lever back to the fuel on position? Not pretty.
P.S. Doing your own troubleshooting is just going to piss off your engineer.
Yes your start temps are within limits, but you're operating a single engine don't forget, you can cook a 114A pretty easily. Ever see what happens to the hot section when you miss the low idle gate accidentally then then put the lever back to the fuel on position? Not pretty.
P.S. Doing your own troubleshooting is just going to piss off your engineer.
"I wish that I knew what I know now, when I was younger"
Re: C-208B start temp
Well,
Let's just say:
If the engineer is reading this tread and I m sure he knows my now former boss, he wouldn't be so pissed off , he ll be like: it's just him....
I resigned from this position , and moving onto a 703 ifr ops.
Hopefully they get it fixed before it gets worse, but it's out of my power at this point.
Andy
Let's just say:
If the engineer is reading this tread and I m sure he knows my now former boss, he wouldn't be so pissed off , he ll be like: it's just him....
I resigned from this position , and moving onto a 703 ifr ops.
Hopefully they get it fixed before it gets worse, but it's out of my power at this point.
Andy
Re: C-208B start temp
Dash 27 wrote:Don't over think it! Sounds like the brushes are worn. Upgrading the SG will only make a difference because it will come with new brushes. From my experience the 200SGL119Q likes to do strange things even with half life brushes. It's probably why they don't allow field replacement of the brushes, only an approved O/H facility...
Yes your start temps are within limits, but you're operating a single engine don't forget, you can cook a 114A pretty easily. Ever see what happens to the hot section when you miss the low idle gate accidentally then then put the lever back to the fuel on position? Not pretty.
P.S. Doing your own troubleshooting is just going to piss off your engineer.
upgrading the S/G will make a huge difference in start temp, it has nothing to do with the brushes and everything to do with the S/G. the 200 amp vs 300 amp S/G's difference in spool up NG % is huge and leads to much cooler start temps. go find a 300 amp equipped 208 and do a battery start, you will see the difference is huge.
as for the cut off to idle comment I have seen this twice and since we were not using trend computers, as per the M/M the hot sections were removed and sent for testing, both failed and had to have the blades replaced but visually you could not see anything wrong with the hot section, guide vane looked fine, etc, wasn't even blade tip rubbing, also if you have a trend computer you don't even have to do anything if you can download the trends and verify that no parameters have been exceeded, I am sure that in some instances you would see burning and etc but not in all.
Re: C-208B start temp
As mentioned before, the temps are within limits but higher than normal temps during start dont happen for no reason. There is a cause and it should be found. I saw once where a P2.5 bleed line had been installed backwards (not on a 114A) and was leading to higher temps on start and in cruise. Eventually that engine rolled back on a go around and failed to respond to power inputs.
In another instance, I was flying a Caravan and myself and others had noticed higher than normal temps during cruise for a given power setting. P&W sent people out to look and proclaimed the engine normal and within limits. That engine then shed a power turbine blade on final as the P&W reps were getting ready to board their plane home. They stayed and had explaining to do. The engine teardown came up with metalurgical problems in a batch of PT blades.
Some people will say its nothing but engines dont go astray for no reason.
In another instance, I was flying a Caravan and myself and others had noticed higher than normal temps during cruise for a given power setting. P&W sent people out to look and proclaimed the engine normal and within limits. That engine then shed a power turbine blade on final as the P&W reps were getting ready to board their plane home. They stayed and had explaining to do. The engine teardown came up with metalurgical problems in a batch of PT blades.
Some people will say its nothing but engines dont go astray for no reason.
