Airbus 318/319/320/321 Undifferentiated
Flight Crew Air Transport Pilot (ATP)
Flight Crew Type 498
Situational Awareness
Aircraft Equipment Problem Less Severe; Deviation - Altitude Excursion From Assigned Altitude; Inflight Event / Encounter CFTT / CFIT
Air Traffic Control Issued New Clearance; Air Traffic Control Issued Advisory / Alert; Aircraft Equipment Problem Dissipated; Flight Crew Took Evasive Action
Aircraft; Airspace Structure; Procedure
In the descent to BZN; we were given direct KICDO (IAF on ILS 12) and a descent to 10;000 MSL. Approximately 9-10 miles east of KICDO; we received a GPWS 'TERRAIN; TERRAIN' while IMC. I; as pilot flying; performed the GPWS escape maneuver and climbed up to 11;000 while the captain notified ATC and we were given a stop climb at 11k. The controller said he doesn't usually have anyone have any GPWS hits in that sector but also mentioned the MSA had recently changed in the past few months. We continued to fly the ILS to a full stop without any more incidents.
[Report narrative contained no additional information.]
Airbus A320 series flight crew experienced a terrain warning descending to 10;000 feet approximately 9 NM east of KICDO during the ILS 12 at BZN. The aircraft was climbed to 11;000 feet and ATC confirmed that 10;000 feet was the correct altitude.