BOAC:
Incidentally, I reckon that Garmin database is incorrect - it shows 4.3 to the 'map' which is actually the BZ?
Highly unlikely that Garmin's database is any different from any other FMS that uses Jeppesen data.
The legal MAP is the NDB, which is 1.1 miles beyond the threshold. Why they coded a different MAP is beyond me. There are many of these remaining in the U.S., (VOR or NDB overlays) but when there were Jepp didn't move the MAP.