Commercial Fixed Wing
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Flight Crew Last 90 Days 135; Flight Crew Type 13401
Communication Breakdown
ATC Issue All Types; Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural Clearance; Inflight Event / Encounter CFTT / CFIT
Flight Crew Took Evasive Action; Flight Crew Requested ATC Assistance / Clarification
Human Factors; Procedure
We departed LAS off of Runway 1R; on the RADYR 2 Departure; except we were told to maintain 6000 ft. All was normal; but ATC did not climb us as expected. Departure frequency was 125.9. As we approached HRRLY; I called ATC and stated we needed to climb. (XA18Z). He gave us a climb to FL 190. As he did so; we got a 'Caution; Obstacle.' The First Officer was flying and he disconnected the autopilot and autothrottles and added power to climb thrust and adjusted the flight path. Once clear of the obstacle; autopilot and autothrottles were re-engaged. No further incident.
During departure from Las Vegas we were assigned the RADYR 2 RNAV Departure off of Runway 1R. Prior to departure we were assigned 6000 ft. as a top altitude by ATC. As we climbed out and leveled off at 6000 ft.; we turned and were approaching HRRLY intersection we were given an 'unable next altitude' message on the FMC. Shortly after the message; the terrain prior to GRUDN began turning yellow. The Captain and I agreed we needed to immediately request a higher altitude from ATC. As we requested the altitude the terrain became a solid yellow block on our display. As ATC was giving us clearance to a higher altitude we received a 'Caution Obstacle' alert from our GPWS system. I disconnected the autopilot and autothrottle; added power; and corrected the flight path while climbing clear of the caution without further incident.
Air carrier flight crew reported that while on an RNAV SID to LAS; ATC failed to issue a timely climb to comply with altitude restriction and terrain; resulting in the crew taking evasive action in response to a GPWS caution.