Commercial Fixed Wing
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Situational Awareness
Inflight Event / Encounter CFTT / CFIT; Inflight Event / Encounter Weather / Turbulence
General None Reported / Taken
Company Policy; Environment - Non Weather Related; Human Factors; Procedure; Airport
Trip going into South Lake Tahoe airport. I was PIC (Pilot in Command); pilot monitoring. We reviewed the airport in the [company manual for] mountain operations with the note of Runway 36 being Day Only. The ceiling was 8300 feet and clear visibility. We commenced the GPS 18 approach; circle to 36. It was light to moderate turbulence; being more turbulent closer to the mountains. We entered right hand traffic pattern. We entered downwind. Near turning base; we encountered 'Caution Terrain' 3 times going from downwind [to] base. We called visual on the terrain as we had the terrain in sight; so we continued. Also; keeping a safe distance away from the mountain; we were close proximity to the airport on downwind. That being said; turning final; we somewhat went left (west) of the final; as we turned to final. Though we were a little left (west) of final; we were stabilized. [The] Captain is a seasoned mountain pilot; and did a very good job of flying the aircraft. That being said; I would recommend not using Runway 36 for landing; as it is in too close proximity to the terrain. The owner expressed concerns about being too close to the mountains on the visual approach segment. If the prevailing winds prevent a south landing at TVL; I highly recommend not using Runway XX; and using [other] airport located 13nm to the northeast of TVL.Because of the close proximity of the mountain; and surrounding rising terrain on the southwest; southeast and south end of the runway; I highly recommend not using Runway 36 TVL for landing; and not using Runway 18 for departure.
Air taxi First Officer reported receiving a GPWS terrain warning on a circling visual approach to TVL airport.