B737 Next Generation Undifferentiated
Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine; Flight Crew Instrument
Flight Crew Last 90 Days 197; Flight Crew Total 2044; Flight Crew Type 1926
Confusion; Situational Awareness
ATC Issue All Types; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter CFTT / CFIT
Air Traffic Control Issued Advisory / Alert; Air Traffic Control Issued New Clearance
Airport; Airspace Structure; Chart Or Publication; Procedure
Departed Runway 07R ANC on the KNIK2 SID. The departure requires a left turn at 2000 ft. or 4 DME whichever occurs first. After takeoff while just starting our turn we got a terrain warning from ATC and directive to turn left immediately for terrain. Our aircraft was right on the magenta line and we were beginning the turn at exactly the same time ATC contacted us to turn. I am filing the FSAP so future crews may be aware of this. Possibly enter a note on the 10-7 page regarding that departure and prompt turn.
B737 Captain reported ATC issued a Terrain Proximity Alert even though they were complying with the requirements of the departure procedure.