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Old 2nd May 2007, 10:23
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Ni Thomas
 
Join Date: Feb 2002
Location: Hampshire, UK
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FYI:
There are UK registered Grumman AA1's & 5's with upgraded/rated Lycomings.

AA1 Original - Lyc. O-235-C2C (108hp) upgraded to a Lycoming O-320-E2G

AA5 Original Lyc. O-320-E2G(?) (150hp) uprated to 160hp
(Higher compression pistons and other magical stuff)

So it can be done (but usually on the back of a recognised USA issued STC)
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