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TBO up to 2000 hours on 914
Posted: Wed Apr 14, 2010 2:43 pm
by Jabbanaught
From Avcom
http://www.avcom.co.za/phpBB3/viewtopic.php?f=1&t=61412
Good news but also worrying if some suggest that motors are not getting to TBO on gyro's
Paul
Re: TBO up to 2000 hours on 914
Posted: Wed Apr 14, 2010 4:39 pm
by THI
Well...lets prove them wrong!
Re: TBO up to 2000 hours on 914
Posted: Wed Apr 14, 2010 9:42 pm
by FO Gyro
I read through the Rotax document very quickly. If I read it right, it appears that to get an engine that is currently on a TBO of 1200 to 2000 requires replacement of the crankcase.
How much is a new crankcase, and is it worth it?
Re: TBO up to 2000 hours on 914
Posted: Thu Apr 15, 2010 12:06 am
by RV4ker (RIP)
Why would that be?
Re: TBO up to 2000 hours on 914
Posted: Thu Apr 15, 2010 8:51 am
by FO Gyro
Again, if I read it correctly, only the last few 914's produced have an automatic TBO of 2000hrs. 914's that are more than a couple of years old require work to be done on them for the TBO to apply.
The mods required for TBO to 2000 hrs I read are as follows:
REPLACEMENT OF CRANKCASE:
Any 914 UL up to and including S/N 4.419.315 is affected. My MT-03 is 3 yrs old, and just escapes needing a new crankcase thank goodness.
PLUG SCREW OF OIL PUMP:
Any 914 UL up to and including S/N: 6.773.778 requires replacement of the plug screw and the pressure spring.
ELECTRIC FUEL PUMP:
The electric fuel pumps must be replaced on all engines at 1000hrs.
The requirements for the 914F (certified version) are similar, but the serial numbers affected are different.