Hi Alan
A strange one:
A2A492 N27EL, a Lancair IV-P, is showing in the grid Aircraft column as invalid ICAO code LNPT, but Database Explorer shows its AT as a blank, so where is it getting the LNPT from?
Which leads me to a further query: the Lancair IV-P is a pressurised version of the IV, both powered by piston engines. The FAA shows N27EL has a reciprocating engine, so according to the ICAO its code should be LNC4 (it doesn't specifically mention the IV-P, just the 4). The database generally has the IV-P as LNP4, which is the turboprop version, the IV-PT Propjet. Should you change them to LNC4?