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#1
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Prop Inspection
Anyone know what it should cost to get a cs three blade prop
inspected. Last overhaul in 1989, hours since 5.9 (yes 5.9). Aircraft stored majority of time in a hangar in a non-corrosive climate. No damage on props, paint still looks fresh (even on leading edge). What are the rules on prop inspections in the US? Also can anyone do an inspection or do they have to be sent out to a shop. If so any recommendations. Thanks |
#2
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Fly it, probably not corroded worse than the engine.
"William M" wrote in message om... Anyone know what it should cost to get a cs three blade prop inspected. Last overhaul in 1989, hours since 5.9 (yes 5.9). Aircraft stored majority of time in a hangar in a non-corrosive climate. No damage on props, paint still looks fresh (even on leading edge). What are the rules on prop inspections in the US? Also can anyone do an inspection or do they have to be sent out to a shop. If so any recommendations. Thanks |
#3
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Most CS props in the US print suggested inspection and maintenance at
the earlier of 500 hours or 6 years. I'd be a little concerned about some kind of sludge in the CS mechanism. However cycling the prop a few times before takeoff would "hopefully" resolve this question. I'd guess $1000 to have it done. What's your peace of mind worth? |
#5
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"William M" wrote in message
. com... Anyone know what it should cost to get a cs three blade prop inspected. Last overhaul in 1989, hours since 5.9 (yes 5.9). Aircraft stored majority of time in a hangar in a non-corrosive climate. No damage on props, paint still looks fresh (even on leading edge). What are the rules on prop inspections in the US? Also can an inspection or do they have to be sent out to a shop. If so any recommendations. Thanks As for rules there are recommended overhaul times both in terms of hours of operation and calendar time. Your propeller would probably be considered over for calendar time which I think is on the order of ten or 12 years. However as a Part 91 operator these are recommended times and do not have to be adhered to. With that low hourly time but high calendar time there are two things to consider. The status of the seals and o rings internally and compliance of any Airworthiness Directives that have come out. You could have the prop inspected for condition and resealed for somewhere between $400 and $1000 I would think. AD compliance would vary depending on the AD and the prop make. John Dupre' |
#6
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I agree with the others, all the regs aside I would have the hub torn down and inspected. Having all of the oil fly out of the hub during takeoff would not make for a good day. The blades should be good to go. |
#7
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JDupre5762 wrote: "William M" wrote in message . com... As for rules there are recommended overhaul times both in terms of hours of operation and calendar time. Your propeller would probably be considered over for calendar time which I think is on the order of ten or 12 years. However as a Part 91 operator these are recommended times and do not have to be adhered to. Depends on the manufacturer. I belive that either Hartzell or HamStandard has a rigid time requirement on several of it's models...something like 1000 hours or 5 calendar years, whichever comes first. Craig C. |
#8
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#9
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nobody wrote:
I agree with the others, all the regs aside I would have the hub torn down and inspected. Having all of the oil fly out of the hub during takeoff would not make for a good day. The blades should be good to go. Not nearly as bad a day as having one blade fly out. At our last annual it was discovered that we had a corroded blade and a crack in the hub. This "inspection" cost us $8500. :-( However, it sure beat the alternative. Matt |
#10
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McCauley is up to 6 years for recommended overhaul. Am thinking that
Hartzell is either 5 years or 6 years (more to follow). This is not mandatory for 91 operations, but periodic internal inspection/reseal is highly recommended. Useta have a prop shop across the ramp that was a sister company. Never really saw a lot of corrosion-related scrap out of the McCauley end, but I would still recommend an internal inspection/reseal. Any reputable prop shop could give you a quote. Pretty sure most of the older McCauley designs have been retrofitted with oil-filled hubs. If an option (and not already present) I would highly recommend it. Most of the scrap from the Hartzell end hub-wise was corrosion related. The hub bearing cavities of compact-hub Hartzell's weren't painted back in the good old days. Am thinking that the 6 year calender interval applies to compact hubs that have been painted internally. Very little corrosion is permissible in the hub. If there is a little corrosion present now, it may be repairable. If there is a lot present, you probably don't want to be flying behind it. Again, a quote for an internal inspection/reseal is common and relatively inexpensive, depending on what they find. The older steel-hub Hartzells are also susceptible to corrosion, as are the blade clamps. It really isn't anything you want to screw around with. Hope this helps; TC |
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