Originally Posted by
Skyjob
APV minima are a different animal all together.
As the previous minima all apply to Barometric VNAV aircraft, the APV minima ONLY apply to aircraft which benefit from a vertical GPS input (eg not the 737). These minima do not require correcting as they are more accurate then barometric VNAV which relies on the correct QNH input to prevent a Blunder Error.
Ultimately, it is this latter Blunder Error we are trying to avoid, getting too close to terrain, when we are not supposed to be...
Hi Skyjob,
as far as the regulations permit, you can fly APVs with GNSS+Baro VNAV. The APV with GPS+SBAS will give you a lower minima.
Check out this
document