hi,
notice that the ramp position LAT and LONG are part of a unique data entry.For this reason after having inserted the LAT the INSERT light remains illuminated waiting for the LONG insertion,and goes out only after having received both LAT&LONG.
Very common error is:
pushing twice the INSERT light after the LAT insertion because the simmers wrongly think that remaining the INSERT light illuminated the LAT data are not been accepted by the INS.
So resuming the right procedure:
After having checked that Action&Malfunction codes aren't present,
insert the LAT data pushing once the INSERT light .
With the INSERT light illuminated insert the LONG data checking at the end after having pushed the INSERT light that the Light INSERT goes out.
Gianfranco