Inspection

[jukelemon]

Hi all.

What has been your inspection/any service schedule for the hot shot?

Specifically, time tables and actions.

Thanks

 

[Pchaser]

Re: Inspection

Reading a NTSB report on a 114 hot shot it was mentioned that the turbos are suppose to be inspected every 100 hours.

 

[rjames01]

Re: Inspection

Hi Jason,

This is from the Continued Airworthiness section of the Installation Manual...

At annual inspection, 100 hour inspection, or any time required maintenance is performed on the engine, check the following:

1. Check all exhaust system components for cracks or breakage, paying special attention to all welded areas.
2. Check cabin heat shrouds for tightness.
3. Check all oil line hoses for chafing and cracking, and security of fittings.
4. Remove turbo to intercooler induction and over-boost valve tube and inspect the inside of the intercooler plenum chamber for oil that has pooled in the bottom of the chamber. If oil is present, the intercooler must be back-flushed with Stoddard solvent.
5. Ask the owner/operator of the aircraft if the engine shutdown procedures outlined in RCM supplemental flight manual are being followed - particularly the 5 minute idle time. If the procedure is being followed, check the turbocharger bearing seals using an approved repair facility.
6. Clean the air filter per Gulfstream Maintenance Manual.
7. Check the operation of the waste gate to see if the actuating lever is moving freely by turning the control knob clockwise to close and counter clockwise to open.
8. Lubricate the waste gate shaft bosses using Tri-flo, Mouse milk, LPS or any light lubricant.

...Bob

 

[Commander91gm]

Re: Inspection

All pretty standard stuff for a turbocharged engine, won't allow you to catch any impeller issues without further dissasembly.

 

[carllee]

Re: Inspection

All pretty standard stuff for a turbocharged engine, won't allow you to catch any impeller issues without further dissasembly.

To truly inspect it you would have to remove it from the engine which is a ton of work.( a bunch of disassembly).

Not True! both sides of the impeller can be inspected without removing the turbo from the airplane or doing any disassembly. The cold side can be inspected by removing the intake tube. The hot side can be inspected by removing the tailpipe. Two clamps - can be done in 15 minutes.

 

[jukelemon]

Re: Inspection

Not True! both sides of the impeller can be inspected without removing the turbo from the airplane or doing any disassembly. The cold side can be inspected by removing the intake tube. The hot side can be inspected by removing the tailpipe. Two clamps - can be done in 15 minutes.

Carl:

From RCM...what are you suggested time lines and inspection points for the Hot Shot?

Thanks

 

[carllee]

Re: Inspection

Carl:

From RCM...what are you suggested time lines and inspection points for the Hot Shot?

Thanks

As Bob pointed out, they're printed in the back of your installation manual.

 

[jukelemon]

Re: Inspection

As Bob pointed out, they're printed in the back of your installation manual.

Ok. I don't have that. And if what Bob pointed out is what you are referring to I do not see any mention of removing both sides of the impeller for inspection? Am I missing something?

Do you care to send me all/everything that would have gone with the HS installation as it relates to maint?

I also do not understand #5 in general. It seems to be saying that if you follow the correct cool down procedure then you need to remove the turbo and have the bearings checked every 100 hours. This seems backwards?

 

[JimParker256]

Re: Inspection

"Correct turbo cool down procedures"... [Biting my tongue once again...]
Check the archives for a lengthy post describing what actually happens when you idle for 5 minutes...

 

[jukelemon]

Re: Inspection

"Correct turbo cool down procedures"... [Biting my tongue once again...]
Check the archives for a lengthy post describing what actually happens when you idle for 5 minutes...

Hi Jim.

I read it already...I think.

If I recall, you are essentially creating a higher TIT by idle as opposed to a higher RPM/air flow?

Regardless...that is what the RCM manual is stating right?

 

[carllee]

Re: Inspection

Ok. I don't have that. And if what Bob pointed out is what you are referring to I do not see any mention of removing both sides of the impeller for inspection? Am I missing something?


If you don't have this document, you should not be flying the airplane. It's required that you keep a copy of this in your permanent records.

You are convoluting my response to Joel's post about the simplicity of inspecting the turbo with what's required by the ICA.


Do you care to send me all/everything that would have gone with the HS installation as it relates to maint?

I can send those to you anytime. All you have to do is ask.

I also do not understand #5 in general. It seems to be saying that if you follow the correct cool down procedure then you need to remove the turbo and have the bearings checked every 100 hours. This seems backwards?

That's a misprint. If you are following the procedures, you DO NOT have to remove the turbo.

 

[carllee]

Re: Inspection

"Correct turbo cool down procedures"... [Biting my tongue once again...]
Check the archives for a lengthy post describing what actually happens when you idle for 5 minutes...

Once again, as we have discussed in previous posts, this has less to do with "cooling the turbo" and more to do with sucking the excess oil out of the gallery, so you don't end up with an oily mess after each time you fly.

If I could rewrite the ICA I would, and this would be something I would change, but it would require an act of congress to get it through the FAA, so we are stuck with it the way it is!

 

[jukelemon]

Re: Inspection

Ok. I don't have that. And if what Bob pointed out is what you are referring to I do not see any mention of removing both sides of the impeller for inspection? Am I missing something?


If you don't have this document, you should not be flying the airplane. It's required that you keep a copy of this in your permanent records.

You are convoluting my response to Joel's post about the simplicity of inspecting the turbo with what's required by the ICA.


Do you care to send me all/everything that would have gone with the HS installation as it relates to maint?

I can send those to you anytime. All you have to do is ask.

I also do not understand #5 in general. It seems to be saying that if you follow the correct cool down procedure then you need to remove the turbo and have the bearings checked every 100 hours. This seems backwards?

That's a misprint. If you are following the procedures, you DO NOT have to remove the turbo.

Ok

Send them to jlockwood@integritystaffing.com just to be sure. I have everything else on this but no installation manual.

I dont follow how an installation manual is required to be flying the airplane. I get the POH supplement (which I have) but not an installation document. Please explain.

I have mounds of paperwork and maybe Ken can interject on this i.e. maybe it is somewhere

Thanks for the clarification on the 5 min statement. Seemed a bit off.

 

[Commander91gm]

Re: Inspection

Not True! both sides of the impeller can be inspected without removing the turbo from the airplane or doing any disassembly. The cold side can be inspected by removing the intake tube. The hot side can be inspected by removing the tailpipe. Two clamps - can be done in 15 minutes.

Thanks Carl

Not that familiar with the hot shot plumbing. The TC &TCA are different story. Lots of disassembly to get to the hot side of the turbo impeller. You might be able to get a look at the impeller with a borescope by coming up through the exhaust pipe. Not sure just what you would be able to determine,doing that .

Is the 114 Turbo plumbed similar to the hot shot? Is there an easy way to inspect the turbo impeller on it?