Date: 201910
Local time of day: 0001-0600
Location: MYF.Tower, CA
Flight conditions: VMC
Weather elements / visibility: 10
Light: Daylight
Aircraft: Small Aircraft
Operator: Personal
Operating under: Part 91
Flight plan: IFR
Mission: Passenger
Flight phase: Initial Climb
Airspace: Class E ZLA
ATC / advisory: Tower MYF
Second aircraft: Skyhawk 172/Cutlass 172
Reporter organization: Personal
Reporter function: Pilot Flying; Single Pilot
Reporter qualification: Flight Crew Flight Instructor; Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Human factors: Communication Breakdown; Situational Awareness
Anomaly: Conflict NMAC; Deviation - Altitude Excursion From Assigned Altitude; Deviation / Discrepancy - Procedural Clearance
Detector: Automation Aircraft TA; Person Flight Crew
When detected: In-flight
Result: Air Traffic Control Issued Advisory / Alert; Flight Crew Took Evasive Action
Contributing factors: Airspace Structure; Human Factors; Procedure
Primary problem: Human Factors

Narrative: I was holding short waiting for an IFR release. The Tower cleared a Cessna 172 for takeoff and they passed on my right wing and departed. Immediately thereafter the Tower cleared a Beechcraft Bonanza for takeoff and they also passed my right wing and departed. Approximately 30 seconds later the Tower cleared me for takeoff. My assigned clearance was 'fly runway heading (281 degrees)' and 'maintain 3;000'. As I was taking the runway and departing I heard the Tower advise the Bonanza he was overtaking the Cessna and suggested a heading of 265. The Tower then suggested the Cessna fly a heading of 270.I had an otherwise normal departure and in my initial climb the Tower advised of the Cessna traffic at 12 o clock. Passing through approximately 1;800 ft. I received a 'traffic; traffic' traffic advisory. I was able to visually acquire the Cessna which was almost directly in front of me. I advised the Tower and was told to 'contact departure and advise the traffic in sight.'The traffic was much closer than I was comfortable with; especially being that they were VFR. As I leveled at 3;000 ft they were approximately on my 11-1130 position and at almost the same altitude. I contacted SoCal approach with a normal check in plus advising the traffic in sight and received no response. As the Cessna was clearly still climbing I also climbed above the 3;000 ft. clearance to approximately 3;200 ft. MSL while maintaining visual separation. As I passed the traffic I descended back to 3;000 ft. MSL and reached out to SoCal again; this time getting a response.My belief is that if we had TCAS (Traffic Collision Avoidance System)-2 (the aircraft is only equipped with TCAS-1) that we would have undoubtedly received a resolution advisory. If our aircraft had received a resolution advisory that would have commanded a climb we could easily have entered the San Diego Class Bravo directly below eastbound airline traffic. I don't know the precision of the Cessna flying their assigned 270 heading; but given our much higher performance even in the initial climb it seems that the 10 degree heading didn't provide enough separation to make this a safe event; even if we had visual separation. The Cessna would have had very limited visibility of me looking over their shoulders through a small rear window; and as I passed above and to the right of them would have disappeared behind their wing.




Synopsis: Small aircraft pilot reported an NMAC with a C172 during climbout from MYF airport.