VP Prop Maintenance
Moderators: John Dean, Moderator
VP Prop Maintenance
Could someone point me to LAA requirements please? Is there an on condition mode? Thanks
Roger Breckell
Roger Breckell
-
- Posts: 331
- Joined: Mon Jan 28, 2008 2:56 pm
- Location: N Yorkshire
- Kevin Dilks
- Posts: 46
- Joined: Tue Apr 07, 2009 6:21 am
- Location: leicestershire
VP prop
Which type of prop ?
All Vp props should come with a maintenance schedule, this should followed as should the over haul times.
Just like and "On condition " engines you still make the maintenance intervals only difference is that a TBO time should really be observed as there can be more subtle problems on a VP prop that just looking for compression checks and oil pressure.
K Dilks
Special Aviation Services
Woodcomp Agent (UK)
All Vp props should come with a maintenance schedule, this should followed as should the over haul times.
Just like and "On condition " engines you still make the maintenance intervals only difference is that a TBO time should really be observed as there can be more subtle problems on a VP prop that just looking for compression checks and oil pressure.
K Dilks
Special Aviation Services
Woodcomp Agent (UK)
-
- Posts: 331
- Joined: Mon Jan 28, 2008 2:56 pm
- Location: N Yorkshire
-
- Posts: 331
- Joined: Mon Jan 28, 2008 2:56 pm
- Location: N Yorkshire
Re: VP Prop Maintenance
Historically a Notice 75 strip and inspection was carried out every 3 years costing between £1000 and £1500 assuming that no major parts other than the aforementioned seals etc required replacement.
A friend has just had his 6 years from brand new american propeller overhauled after 100hrs TT , at a cost in excess of £4000 + vat, the aircraft has been hangered and properly looked after all its life as it is of wooden construction. The explanation being that while completely serviceable most of the parts with the exception of the blades were no longer to new specification.
If you think this is a good system you are welcome to it.
There is also the unresolved problem of what happens if your propeller is no longer supported, ie nobody will undertake to overhaul it due to a lack of new parts to zero time overhaul it. This could ground all aircraft with De Havilland VP props in the event that the CAA impose the threatened EASA 6 year overhaul cycle on ANNEX 2 types despite the fact that the manufacturer never placed a calender life on these propellers.
A friend has just had his 6 years from brand new american propeller overhauled after 100hrs TT , at a cost in excess of £4000 + vat, the aircraft has been hangered and properly looked after all its life as it is of wooden construction. The explanation being that while completely serviceable most of the parts with the exception of the blades were no longer to new specification.
If you think this is a good system you are welcome to it.
There is also the unresolved problem of what happens if your propeller is no longer supported, ie nobody will undertake to overhaul it due to a lack of new parts to zero time overhaul it. This could ground all aircraft with De Havilland VP props in the event that the CAA impose the threatened EASA 6 year overhaul cycle on ANNEX 2 types despite the fact that the manufacturer never placed a calender life on these propellers.
023635
Nigel Cottrell
Nigel Cottrell