Is this a PPonk engine?
For what?
Did you send anything out for inspection?
Prop and governor were overhauled; that was maybe 6? I told him to do the alternator, but I think he took it to Autozone.
Magnetos and vacuum pumps can also suffer from sudden RPM drops.
Mine wasn't a prop strike, so no stoppage, but agreed the OP would need those items inspected as well. Mine puked all its oil out and ran with no oil pressure for several minutes until I could get her on the ground. I was just trying to give a recent data point for cost for an IRAN for a 6 cylinder.
I’d be amazed if you could do it that cheap.
You usually have to send that stuff out for inspection, it's rare there's somebody nearby that can do it.
You mean like the one linked above that clearly states “magnetic particle inspection”?
Interesting. So you have an aircraft with a prop strike. You disassemble the engine per the SB and take the required parts to Bubba's Machine Shop. He takes them in back and returns later and tells you there's no cracks. You then reassemble the engine and sign off the SB under your A&P certificate. Correct? So how many times have you actually done this?
CORRECT.
The only Capt Know-it-all that shows up without a clue is you. Smart or dumb, an A&P can't sign off NDT inspections unless its specifically documented and approved by the OEM or the A&P is NDT qualified. And it doesn't matter if they use the same equipment as a CRS or not. So what's your point again? Or do you think an owner should pay twice for the same work? And yes I can provide guidance references if you need or better yet why don't you provide the references for your method since you never do?
Not sure how you're getting that.
Have you actually done this? Outside of checking the flange, journals, etc and a good visual inspection still dont see how this "saves" any money or time using a local shop first unless you're not going to charge the owner for your time and the initial local checks? All small parts and the case aside the cost for a CRS to Mag Particle inspect and dimension check a crankshaft is around $225. So how much are you saving? What about those cranks that need an ultrasound check as well? Do you also supply the local shop with the inspection criteria or just have them wing it? In my experience, if the crank is not bent and isn't at limits when removed few fail at the mag part test. Now my experience is from several moons ago so maybe crankshafts now days crack more and need to be "pre-checked" beforehand however I've never seen this route before. But I guess to each their own.
FYI: the use visual dye penetrant inspection on parts that can or will be NDT'd by fluorescent or magnetic particle inspection has basically been disallowed and in some cases prohibited. These type dyes have been proven to mask existing defects when the other types of inspection are used. There are a number of guidance docs on this as well.
Pot, meet kettle.
If you reread my post I said doing those initial checks was the way to go. What I dont understand is why send it a local shop for a mag particle inspection. Now if you're asking how I would perform this initial check, after cleaning the crankshaft get a couple V-blocks, dial indicator, steady rest, micrometer, and an overhaul manual. Then check the runout and dimensions yourself. Shouldn't take more than an hour once the crankshaft is removed and cleaned.
Yes on 10x. Here's one reference on visual dye penetrant use:
