Paul McBride, an expert on engines, retired after almost 40 years with Lycoming.
Q: Hi, I am a Mexican looking for my first plane. I found a 1980 Cessna 172 with an H2AD engine that has just 100 hours since overhaul. The serial number ends in 76T; I had read about 76A. Is it OK? Is it the same as the 76A?
GERARDO ARRIOLA, via e-mail