A320 captain reported a near midair collision with a drone on departure from sfo.

Attributes
ACN	1519589
Time
Date	201802
Local Time Of Day	1201-1800
Place
Locale Reference	SFO.Airport
State Reference	CA
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	A320
Operating Under FAR Part	Part 121
Flight Phase	Climb
Route In Use	STAR TRUKN2
Flight Plan	IFR
Aircraft 2
Make Model Name	UAV - Unpiloted Aerial Vehicle
Operating Under FAR Part	Other 107
Flight Phase	Cruise
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 102 Flight Crew Type 899
Events
Anomaly	Conflict NMAC
Miss Distance	Horizontal 100 Vertical 300

Narrative:

While climbing through 5000 on the TRUKN2 departure off of 28L; I noticed a small drone pass approximately 300 ft below and 100 ft left of our aircraft. I notified norcal departure on 120.9 and they relayed the info to a flight departing behind us.

Original NASA ASRS Text

Title: A320 Captain reported a NMAC with a drone on departure from SFO.

Narrative: While climbing through 5000 on the TRUKN2 departure off of 28L; I noticed a small drone pass approximately 300 ft below and 100 ft left of our aircraft. I notified NORCAL Departure on 120.9 and they relayed the info to a flight departing behind us.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.