KELPkid From United States of America, joined Nov 2005, 6658 posts, RR: 3 Posted (9 years 8 months 3 weeks 6 days 14 hours ago) and read 2925 times:
This question arose after talking with a fellow instrument-rated pilot. I was curious if there is any place in the U.S., or indeed the world, where non-precision instrument approaches are commonly used by mainline aircraft in scheduled part 121 commercial operations?
A non-precision approach would be considered an instrument approach with horizontal guidance only (e.g. Localizer w/no glideslope), VOR approach, NDB approach, or GPS approach with no VNAV.
On a related note, I'm just guessing here, but I'm betting that the flight ops manual for many airlines forbids the use of circling approaches or circle to land procedures?
I'd appreciate any enlightenment on the said subject
Celebrating the birth of KELPkidJR on August 5, 2009 :-)
Crosswind From United Kingdom, joined Nov 2000, 2622 posts, RR: 57
Reply 4, posted (9 years 8 months 3 weeks 6 days 14 hours ago) and read 2885 times:
Non-precision approaches are pretty much standard in large parts of Central and South America, the Caribbean, Southern Europe and Africa.
I don't think there will be many airlines out there that do not encounter non-precision approaches in their daily operations.
I work for a European airline and the many of our destinations (both short and long haul) feature nothing more than a procedural VOR or NDB approach.
As for banning circling approaches, If our ops mannual prohibited them we wouldn't be able to operate into places like Innsbruck where the use of RWY08 requires a circling approach within a mountain valley!!!
Flightopsguy From United States of America, joined Jan 2005, 348 posts, RR: 0
Reply 7, posted (9 years 8 months 3 weeks 6 days 12 hours ago) and read 2750 times:
Lots of circling approaches. In use almost every day at MDW. ILS 31C circle to 22L or (more amusing) ILS 04R circle to 13C. Some carriers are better at this one than others.
Most 121 carriers by their opspecs need 1000 ft ceiling and 3 SM visibility for circle to land. Also still some LDA approaches in use.
I would bet that all or most 121 US carriers have circle to land and/or other non-precision approaches (NDB, LDA, ASR) in the opsecs. About the only one you don't see much anymore is the old PAR approach (unless you watch the original Airport movie).
FSPilot747 From United States of America, joined Oct 1999, 3599 posts, RR: 11
Reply 13, posted (9 years 8 months 3 weeks 6 days 9 hours ago) and read 2600 times:
Keep in mind that most of these airliners have FMS that can pretty much turn any approach from VOR to NDB into a precision-style approach with a glideslope. Airliners don't fly em like us little guys do (at least, AFAIK).