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Tail wheel spring mounting bracket
Posted: Thu May 17, 2018 11:54 am
by ghostflyer
Presently I have p/n 0512125-1 bracket and made of steel ,so the question is does the bracket p/n 0512000-75 have to be retro fitted . Was it a AD back in ancient times. My bracket is in good condition but it is slightly different from the drawing .
So what year did they change this bracket on the production line .
Re: Tail wheel spring mounting bracket
Posted: Thu May 17, 2018 12:18 pm
by Bruce Fenstermacher
No AD. Later part superseded old. New design used on serial 20806 and on.
Really I wonder about upgrading. One I'm not sure how the old one cracked. In other words how badly? Did it render the aircraft immediately unairworthy? We've seen plenty of cracking of the new assembly in the corners and top plate. What makes the new plate better? Does it crack better?
Given the availability of the old bracket, and the fact it may be replaced with less work than the new, it may be just as good in the long run as the new design. Wondering minds.
Re: Tail wheel spring mounting bracket
Posted: Thu May 17, 2018 2:03 pm
by GAHorn
The old bracket, being dissimilar metal, was subject to corrosion, and it had small "purchase" on the tailcone so it caused cracking of the fuselage around the mounting. (Lots of stress transmitted to a small area.) I've seen several that displayed both problems.
I'd not change a steel box bracket until it showed problems tho'.
The cracking Bruce mentions is on the bracket itself (which can be replaced easier/cheaper than the entire change-over)...not the fuselage...which can present additional expense to repair ...then still have to perform the aluminum bracket installation.