Corporate jet pilot reported receiving several revised clearances in a short amount of time from a v...

Narrative:

Center changed our arrival procedure 4 times; 4 different procedures in approximately 4 minutes. Our clearance was to fly to a fix at a specified altitude and due to the confusing clearances that center was rattling off we missed the crossing restriction and had to be vectored in the descent. The problem was that the crossing restriction was for a clearance that changed. All of this happened because of GPS jamming going on in the area. I'm filling out this report so that you all know that it was extremely busy; ATC was making too many requests; one right after another; and all of this required continuous FMS changes; inputs; and confirmations. How could things have gone better; I'm not sure. We did the best we could but it became task saturated for them and us. They told us that it wasn't a problem; however; I'm still filling out this report to enlighten the team on how screwball things got with 4 different arrival changes in such a short period of time. I don't have any thoughts on how this could have been avoided.

Original NASA ASRS Text

Title: Corporate jet pilot reported receiving several revised clearances in a short amount of time from a very busy ZLC Center Controller due to GPS jamming occurring in the area.

Narrative: Center changed our arrival procedure 4 times; 4 different procedures in approximately 4 minutes. Our clearance was to fly to a fix at a specified altitude and due to the confusing clearances that Center was rattling off we missed the crossing restriction and had to be vectored in the descent. The problem was that the crossing restriction was for a clearance that changed. All of this happened because of GPS jamming going on in the area. I'm filling out this report so that you all know that it was EXTREMELY busy; ATC was making too many requests; one right after another; and all of this required continuous FMS changes; inputs; and confirmations. How could things have gone better; I'm not sure. We did the best we could but it became task saturated for them and us. They told us that it wasn't a problem; however; I'm still filling out this report to enlighten the team on how screwball things got with 4 different arrival changes in such a short period of time. I don't have any thoughts on how this could have been avoided.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

Attributes
ACN	1446165
Time
Date	201705
Local Time Of Day	1201-1800
Place
Locale Reference	ZLC.ARTCC
State Reference	UT
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Light Transport Low Wing 2 Turbojet Eng
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Route In Use	Vectors
Flight Plan	IFR
Person 1
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	ATC Issue All Types Deviation - Procedural Other / Unknown Inflight Event / Encounter Other / Unknown

Corporate jet pilot reported receiving several revised clearances in a short amount of time from a very busy ZLC center controller due to GPS jamming occurring in the area.