M20J Spinner

[Brandontwalker]

I am nearing the end of my 3rd annual and my IA discovered my spinner was previously stop-drilled. He indicated it is an illegal fix and is not airworthy. I took a look at the spinner today and it is apparent that an inept mechanic was at work as the spinner was never cracked. Rather, he stop-drilled a scratch in the paint finish. (SMH).

 

Since the spinner is not cracked, does the drill hole still result in an unairworthy spinner? If so, what are our replacement options? I have a McCauley 2 blade prop.

 

 

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[RobertE]

Very good question and way over my pay grade.  I’ll be interested in whatever I s the answer.  Good luck, my friend.

[carusoam]

Drill an identical hole on the other side... 

symmetry keeps people from looking any further...

Somebody else asked About replacement spinners in another thread around here earlier...

 

A few spinners were offered for sale...

If you need a different one see @Alan Fox or @acpartswhse

PP thoughts only, not a mechanic...

Best regards,

-a-

[Brandontwalker]

Drill an identical hole on the other side... 
symmetry keeps people from looking any further...
Somebody else asked About replacement spinners in another thread around here earlier...
 
A few spinners were offered for sale...
If you need a different one see [mention=7207]Alan Fox[/mention] or [mention=12721]acpartswhse[/mention]
PP thoughts only, not a mechanic...
Best regards,
-a-

If I get through without replacement, I will strip the paint as the scratch draws the eye to the drill hole.


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[lukejb]

I have a polished spinner from a M20J McCauley I would sell.  Its in perfect condition.  

[Guest]

If the stop drill hole is 1/8” diameter, put a dead soft rivet in the hole and a dab of paint. Something like an MS20470 A series rivet.

Clarence

[bradp]

Don’t you have like 12 to 18 stop drilled holes around the circumference of the spinner through which a bunch of screws live? 

Spinners ain’t cheap.  Seems like overkill but I’m just an O/O.  

[Brandontwalker]

My IA reinspected the spinner today and agreed there is no crack therefore no airworthiness issue. I appreciate your thoughts, offers, and input. Crisis averted on this one.


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[jaylw314]

50 minutes ago, Brandontwalker said:

My IA reinspected the spinner today and agreed there is no crack therefore no airworthiness issue. I appreciate your thoughts, offers, and input. Crisis averted on this one.


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Wow, that's a weird one!

[Igor_U]

Years ago I had a Hartzell spinner with a crack that was stop drilled on one location and another crack that would stop at the screw hole.

I was told it was airworthy with two cracks. IIRC this came from Hartzell and was confirmed by IA and my prop shop during eddy current inspections. I have no idea if that applies to McCauley.