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50h fuel nozzle inspection
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lmamane
Posted 2020-07-23 5:04 AM (#2325)
Subject: 50h fuel nozzle inspection


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Location: ELLX

Who here flies more than 50h/year? Do you perform the 50h inspection, and in particular the fuel nozzle inspection? Has anyone ever found any evidence of dirt or streaking nozzle there?

The context of the question is that the Rolls Royce inspection program for the M250 engine specifies the fuel nozzle inspection at 100h intervals, but the O&N/Griggs program for the aircraft includes it in the 50h inspection. My hope is to build up a case, based on experience on the fleet, to put it back to 100h.

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Georg Kraus
Posted 2020-09-21 7:26 AM (#2328 - in reply to #2325)
Subject: Re: 50h fuel nozzle inspection



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that would be a good idea. Will check with my shop!
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Georg Kraus
Posted 2020-09-22 3:37 AM (#2329 - in reply to #2325)
Subject: Re: 50h fuel nozzle inspection



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From Bob: on a PT-6 they have about 16 spray nozzles, on the RR 250 they only have one...the importance here is that the pattern stay in a 360 degree pattern, carbon builds up on one side of the nozzle shield and causing the spray to only hit about 180 to 270 degrees of the target, therefore less efficiency, but the big deal is that it causing improper or unequal heat distribution to the wheel and usually the #1 wheel won't make it to 1750, if attention to detail is not performed to cleaning....it only takes about 20 minutes to clean the nozzle and not even a messy job...a shop shouldn't charge much more than a couple hours labor to "soap, Flush, plug and unplug the bleed lines and clean the spray nozzle....
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