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<< Lancair Builders' Mail List >>
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Here is some more info on the expanded Continental crank woes as well as
Lycoming entering the picture. This is cut and pasted from the AVWEB
electronic newsletter. Somewhat alarmed I called Continental on my 550
because I had already checked it. I used the Continental URL and input
my serial number and it came up with "already checked". Sooo, I called
and they said my engine was not affected. Just a heads up.
Ed Rosiak ES in progress
TCM CRANKSHAFT WOES EXPAND...
Teledyne Continental Motors (TCM) has identified an additional lot of
crankshafts that will have to be inspected under a Mandatory Service
Bulletin issued last month. TCM will issue Revision B of MSB 00-5A very
shortly, adding about 300 crankshafts to the list of 1,100 that already
require a metallurgical inspection by core sample. TCM engineering
chief John Barton told AVweb that the failure rate for crankshafts
tested so far under MSB 00-5A has been approximately 20 percent, sharply
higher than the 5-percent flunk rate that the company anticipated when
the MSB was first issued.
NOTE: AVweb's NewsWire <http://www.avweb.com/newswire/news0020b.html>
includes links to the complete text of Emergency AD 2000-08-51 and
the TCM Web site.
...WHILE TEXTRON LYCOMING OWNERS GET CRANKED UP, TOO
Just when you thought it was safe to trade that airplane with the TCM
engine -- and its crankshaft problem -- in on something with a Lycoming
label on it, comes word that the other major GA engine manufacturer is
having its own share of problems. Seems that an unspecified
"metallurgical problem with a small number of crankshafts" was
discovered by Lycoming earlier this month, prompting the company to
issue Special Advisory No. 55-500. All of which raises the question of
whether TCM and Lycoming got bad batches of steel from the same
supplier. At deadline, AVweb was unable to confirm this scenario.
NOTE: AVweb's NewsWire <http://www.avweb.com/newswire/news0020b.html>
includes the complete text of Textron Lycoming's Special Advisory No.
55-500 and a related letter to its distributors.
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LML website: http://www.olsusa.com/Users/Mkaye/maillist.html
LML Builders' Bookstore: http://www.buildersbooks.com/lancair
Please send your photos and drawings to marvkaye@olsusa.com.
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