Date: 202002
Local time of day: 0601-1200
Location: SDL.Airport, AZ
Flight conditions: VMC
Light: Daylight
Aircraft: Medium Transport
Operator: Air Taxi
Operating under: Part 135
Flight plan: IFR
Mission: Passenger
Flight phase: Initial Approach
Airspace: Class E P50
ATC / advisory: TRACON P50
Second aircraft: UAV - Unpiloted Aerial Vehicle
Reporter organization: Air Taxi
Reporter function: Captain; Pilot Flying
Reporter qualification: Flight Crew Air Transport Pilot (ATP)
Second reporter function: Pilot Not Flying; Captain
Anomaly: Conflict NMAC
Detector: Person Flight Crew
When detected: In-flight
Result: General None Reported / Taken
Contributing factors: Procedure; Aircraft
Primary problem: Aircraft

Narrative: We were being radar vectored for SDL; level 6;000 feet MSL/approximate heading 050/200 KIAS. Traffic appeared on TCAS display 5 miles ahead of us at about eleven o'clock; altitude started at 300 feet above; increased to 600 feet. I asked the pilot not flying to request a vector to avoid; but our closure rate was quite high. Before there was a break in the radio traffic the conflict aircraft began a rapid descent toward us. A few seconds after seeing the TCAS target; we received an RA to which I complied immediately by reducing power to idle and descending at 2;500 FPM per the RA instruction. The Controller was talking to another aircraft. TCAS stated 'Clear of conflict' at 5;000 feet; I arrested the descent and the pilot not flying advised the Controller that we responded to an RA. He said to maintain 5;000 feet. Shortly after this while still at 5;000 feet; I spotted something shiny/metallic in front of us and it passed low and to the right. The pilot not flying described it as a metallic fixed wing unmanned aircraft and that it passed about 50 feet below the right wing. We then received a second RA (monitor vertical speed; no altitude change) just north of DVT from a training aircraft departing that airport before landing at SDL.Traffic conflicts and RAs are becoming more common in the area north of Dear Valley and Scottsdale airports. I think the flight training organizations should be made aware of higher speed jet traffic in that area. In addition I do feel it is important for ATC to keep the faster IFR; jet traffic in protected airspace during times of high volume training and traffic arriving into the Scottsdale airport from the west and north. We are too fast to be mixing with training aircraft in the practice areas.


Second narrative: We were being radar vectored for SDL; level 6000' MSL/approximately heading 050/200 KIAS. Traffic appeared on TCAS display 5 miles ahead of us and 11 o'clock; altitude was varying 200'-300' which suggested to me that it was a training aircraft completing a maneuver such as a lazy 8. A few seconds after seeing the TCAS target we received an RA (Resolution Advisory) and the PF (Pilot Flying) complied immediately by deploying the spoilers and descending at 2500 fpm per the RA. The controller was talking to another aircraft during this process. TCAS stated 'Clear of conflict' at 5000'; PF arrested the descent and I advised the controller that we responded to an RA. He said to maintain 5000'. Shortly after this while still at 5000' I spotted something shiny/metallic in front of us and it passed within 50' below the right wing. Believe it was a drone as it had a straight line (leading edge) reflecting sunlight. Received a second RA (monitor vertical speed; no altitude change) just north of DVT from a training aircraft departing that airport before landing at SDL.The airspace around the PHX area is becoming busier and busier. I believe that it may be helpful to take a proactive stance and explore making changes in the following areas (if not already in the works): 1) Formal education of piston training aircraft operators on the routes that ATC directs turbine aircraft flying to outlying airports in the PHX area. We were flying a vector that we see very often (began around TIRON intersection) and I doubt the first aircraft we received an RA from knew we were there. 2) PHX approach keeping turbine aircraft in the class B airspace as long as possible would be wonderful. When we're kept under that airspace 30 miles north or south of PXR; we often receive RAs and it's hectic because PHX approach is often unable see all the traffic we're getting flown through. 3) New charter arrival procedures for SDL-bound turbine aircraft could help solve this issue. 4) Perhaps the Class B airspace could be modified to allow for more protection (such as a 6000' shelf where we were operating).


Synopsis: Air taxi flight crew reported experiencing two RA commands and a total of three conflicts during approach to SDL airport.  Reporters stated the number of RAs are increasing in the area north of Deer Valley and Scottsdale airports due to VFR training operations.