I usually agree with dga - but for Cubs and early Aeroncas, be aware that putting the aircraft on scales can turn it into 1PCLM. If you weigh it, do...
Difficult to believe it has been over a year since I updated. My FSDO still maintains that I cannot install these radios, and as recent as September...
What are you running into that requires boot cowl access? I admit to doing a two-piece boot cowl on the J4 for fuel tank access, but have yet to see...