Small Aircraft
Flight Crew Commercial; Flight Crew Instrument
Flight Crew Last 90 Days 130; Flight Crew Total 250
Training / Qualification; Situational Awareness; Distraction; Confusion; Workload
Airspace Violation All Types; Conflict NMAC; Deviation - Altitude Overshoot; Deviation / Discrepancy - Procedural FAR; Deviation / Discrepancy - Procedural Clearance
Air Traffic Control Issued Advisory / Alert; Flight Crew Took Evasive Action; Flight Crew Returned To Clearance; Flight Crew Became Reoriented; Flight Crew Exited Penetrated Airspace
Airspace Structure; Environment - Non Weather Related; Human Factors; Procedure
I was flying from West to East at 3;800 ft. ATC (125.90) warn me about other aircraft coming from 10 o-clock and he is 100 feet below me. Now B airspace for SFO was at 4;000ft. While I was looking for traffic we are getting closer; so I thought I should climb to avoid this traffic. Then when I saw the traffic below me I announced traffic insight and saw him flew by below me. After I turn my focus on flying but then I was at 4;100 feet; then I quickly decent back to 3;500 feet.The ground below me was about 2;000 feet; which is why I chose to climb up. I was in B airspace without clearance for short period of time. I bust B airspace by 100 feet or less. Also; I was on the edge of B at 4;000 feet and 6;000 feet. The Location of occurrence was at waypoint COLLI about 8nm northeast of OAK.In order for me to prevent this from happening again I should ask ATC for advice if I should climb or turn. I also need to pay attention to my altitude while looking for traffic. However; I can not be certain that if I were to stay at 3;900 feet and would avoid that traffic because that aircraft seem to be close while flying below me.
A small aircraft pilot 8 NM northeast of OAK flying eastbound at 3;800 feet to avoid oncoming traffic; climbed into SFO Class B at 4;100 feet as traffic passed 100 feet below him.