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ACRO E-mail Archive Thread: FW: engine problem finally solved

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ACRO E-mail Archive Thread: FW: engine problem finally solved


Thread: FW: engine problem finally solved

Message: FW: engine problem finally solved

Follow-Up To: ACRO Email list (for List Members only)

From: Salvadori Luca <lsalvadori at>

Date: Tue, 13 Feb 1996 15:06:43 UTC


From: Salvadori Luca
To: 'IAC Mailing List'
Subject: RE: engine problem finally solved
Date: Monday 12 February 1996 8.56

>Hi Guenther,
>What is exactly Your prop problem?
>Luca Salvadori <salvadori.l at>

>From: gei
>To: iac
>Subject: Re: fuel tank
>Date: Tuesday 19 December 1995 20.44

>My tank is jus fine now, however my engine problem is still
>there -- Nobody out there with an idea why my prop would be

Hi Guenther,

Nice to heve good news fro You!
Well, maybe You remember that some months ago I advised You to check 
governor... I am happy that this was finally useful!
In fact, governor is one of most likely causes of oil pressure fluctuations, 
as my experience (and that of my colleagues) has shown, and consequencies 
can be also very hard and not limited to disappointment.
I've experienced a near hull loss on a CAP-20 of my Club this summer, when a 
bad  governor (12hrs since full overhaul...) broke in flight during 
aerobatic training and put prop to null pitch. Engine suddenly roared to 
3100+RPM and prop mast cracked because of overspeed (maximum allowed is 
2900RPM), releasing all engine oil in a few seconds. Fortunately blades did 
not separe from mast and pilot (not me, fortunately: I would have had a 
hearth attack!) succeeded in returning from training zone (some 6NM away 
from airport) and landed safely. Engine is now exposed in Club House as a 
precious monument to Mr. Lycoming, since it ran some 8min without any oil 
before stopping.
So, we are now very careful to any prop/governor misfunctioning: for all 
Regarding mechanics, do not be depressed: often they are not pilots and have 
no idea of what really happens on the aircraft on the air. I think that a 
mechanic SHOULD BE a pilot also.

     Fly high (and overhead!)


© Dr. Günther Eichhorn
Email Guenther Eichhorn