What defines new or changed found at airnav.com/airport/KMBO
I am most interested in the VOR alpha approach. I see changes to MDA but that’s it. (going on memory raised by 20 feet for Cat A). The approach has been in existence since I have been flying.
naco.faa.gov/content/naco/online … _Intro.pdf didn’t give me anything and unfortunately searches in google with the keywords of changed new instrument approaches didn’t reveal anything that I could see.
That’s what I like about Jeppesen, they tell you what the change is.
Looks like all three changed, maybe the changes in the 2 VOR approaches were numerous enough to warrant being called new. I really don’t know the definition though.
P.S.
Does your glider training include an IFR session?
Yep it does! I Fly Roads. 
Getting “sucked” into a cloud without gyroscopic instrumentation will make for a bad day which is emphasized in training.
No problem.
Many, many years ago fish spotters using aircraft like J3’s with extra tanks would come back from hours offshore working with the fleet only to find the pacific marine layer had rolled in. All they had was basic instruments (needle/ball, airspeed, altimeter and wet compass), a manual direction finder or 4 course range if they were lucky and an HF radio that they talked to the boats with. At least they could get a weather report, if the ceiling was at least 1000 feet they would ask Vandenberg approach for a vector over the Santa Maria valley then spin down through the clouds. If it was too low they would get a GCA approach to Vandenberg and spend the evening in the O club. Most of them probably didn’t even have an instrument license.
I’ll pull out the Jepp plates tomorrow and tell you what has changed!