VWGhiaBob
Line Up and Wait
- Joined
- Mar 17, 2013
- Messages
- 884
- Display Name
Display name:
VWGhiaBob
Two weeks ago, I was #2 departing KPSP 31L on the Cathedral 1 departure procedure at night. This is a fairly complex DP, as it involves a heading climb until you cross a VOR radial, and then at least 2 climbing turns.
I watched the airliner in front of me, and noted he turned way before the radial. In Palm Springs, you need to follow all IFR procedures carefully, as there are 10,000 feet mountains all around you, and the airport is at 500 MSL.
In this case the control tower called out the error. The pilot replied, “Yes, our FMS failed and we would like to request vectors.” The controller seemed a bit taken aback by this claim, but issued vectors nevertheless. I expected to hear, “call this number”, but the episode ended there as far as I know.
I have a some questions about this incident.
1. Is the pilot likely to get cited after the fact? I mean this was an airliner with over 100 people.
2. In the event of a failure, shouldn’t he have reported the FMS failure immediately, rather than silently initiating a turn? I mean...gosh...it was night, and if the FMS failed...it’s Palm Springs and you can’t see those mountains unless there’s a full moon.
3. Don’t modern airliners have back-up nav systems? Even in my lowly Cirrus SR22, when I take off from KPSP IFR, I dial the DP in two ways...VOR (choice #1) and GPS (plan B). If fact I always do this. That way if one method fails, I switch, not unlike switching to a Localizer approach if the ILS glide slope fails.
Any thoughts on this incident?
I watched the airliner in front of me, and noted he turned way before the radial. In Palm Springs, you need to follow all IFR procedures carefully, as there are 10,000 feet mountains all around you, and the airport is at 500 MSL.
In this case the control tower called out the error. The pilot replied, “Yes, our FMS failed and we would like to request vectors.” The controller seemed a bit taken aback by this claim, but issued vectors nevertheless. I expected to hear, “call this number”, but the episode ended there as far as I know.
I have a some questions about this incident.
1. Is the pilot likely to get cited after the fact? I mean this was an airliner with over 100 people.
2. In the event of a failure, shouldn’t he have reported the FMS failure immediately, rather than silently initiating a turn? I mean...gosh...it was night, and if the FMS failed...it’s Palm Springs and you can’t see those mountains unless there’s a full moon.
3. Don’t modern airliners have back-up nav systems? Even in my lowly Cirrus SR22, when I take off from KPSP IFR, I dial the DP in two ways...VOR (choice #1) and GPS (plan B). If fact I always do this. That way if one method fails, I switch, not unlike switching to a Localizer approach if the ILS glide slope fails.
Any thoughts on this incident?