Value of a Piper J-3F Cub

[jam0552@msn.com]

FYI only the type certificate holder can issue a new data plate, and they never do unless it is lost and you have a letter from the FAA. So if someone has affixed a new data plate that doesn't match the airworthiness certificate or registration, I would investigate that before buying it. A dead cylinder that comes alive after 10 min run is probably the result of a stuck valve. In any event that cylinder should come off for inspection/repair/overhaul before flight. If someone annuals this aircraft in the condition you're describing, I'd be very suspect.
-Joel Marketello A&P, IA

[martymayes]

"F" and "L" are different type certificates. Replacement data plate will have FAA authorization letter in the file. Looks like red flags everywhere.

[JimRice85]

In years past, over stamping data plates on J -3s was pretty common. The FAA even changed the airworthiness cert from one type to another (J-3F to J-3C, et al) when engines were changed. It is not at all uncommon to see on the pre -war Cubs. In more recent years, this hasn't been allowed, but in the 50s and 60s, it was more prevalent than most would believe...with FAA approval. I've seen FAA letters approving the changes to data plates and the issue of new AWCs.