A flight crew in lax airspace reported passing close by what appeared to be drone at approximately 8...

Narrative:

While on a reposition flight to sna; we encountered what appeared to be some sort of drone at approximately 8;000 ft over la airspace. We were on an assigned heading at 8;000 ft and I noticed something [with] gray/silver color out in front of us. There was no advisory from ATC regarding traffic or any alert from the airplane stating 'traffic'. We couldn't tell how fast it was going as we were going 250 KTS and it passed quickly off the right side of the airplane approximately 100-200 ft below us. It looked like some sort of round object (similar to that of a balloon; but definitely not a weather balloon). We weren't sure if it was hovering or what as we passed it rather quickly. We reported it to ATC and he was very appreciative regarding the report.about 8 minutes later as we were approaching the base leg into sna at 3;000 ft; we saw traffic on the TCAS at our altitude. ATC advised us of said traffic (unknown type) and that it was fast moving approximately 170 KTS. He said it would be no factor as we would turn inside of it to join the ILS. The airplane [TCAS] then began saying 'traffic; traffic' and the target changed course and went red. The airplane gave us an RA to climb and we immediately climbed to avoid whatever it was. We never saw anything. Once we were clear of the traffic; we advised ATC we responded to an RA and he said thank you. We landed uneventfully. Ground control then asked us to call socal regarding the drone report to give specifics about what it looked like. He took our information and no further action was required.

Original NASA ASRS Text

Title: A flight crew in LAX airspace reported passing close by what appeared to be drone at approximately 8;000 FT enroute to SNA then taking evasive action from a TCAS TRAFFIC alert at 3;000 FT on approach.

Narrative: While on a reposition flight to SNA; we encountered what appeared to be some sort of drone at approximately 8;000 FT over LA airspace. We were on an assigned heading at 8;000 FT and I noticed something [with] gray/silver color out in front of us. There was no advisory from ATC regarding traffic or any alert from the airplane stating 'traffic'. We couldn't tell how fast it was going as we were going 250 KTS and it passed quickly off the right side of the airplane approximately 100-200 FT below us. It looked like some sort of round object (similar to that of a balloon; but definitely not a weather balloon). We weren't sure if it was hovering or what as we passed it rather quickly. We reported it to ATC and he was very appreciative regarding the report.About 8 minutes later as we were approaching the base leg into SNA at 3;000 FT; we saw traffic on the TCAS at our altitude. ATC advised us of said traffic (unknown type) and that it was fast moving approximately 170 KTS. He said it would be no factor as we would turn inside of it to join the ILS. The airplane [TCAS] then began saying 'TRAFFIC; TRAFFIC' and the target changed course and went RED. The airplane gave us an RA to climb and we immediately climbed to avoid whatever it was. We never saw anything. Once we were clear of the traffic; we advised ATC we responded to an RA and he said thank you. We landed uneventfully. Ground Control then asked us to call SOCAL regarding the drone report to give specifics about what it looked like. He took our information and no further action was required.

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.

Attributes
ACN	1200384
Time
Date	201409
Local Time Of Day	0601-1200
Place
Locale Reference	SCT.TRACON
State Reference	CA
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Medium Transport Low Wing 2 Turbojet Eng
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Flight Plan	IFR
Aircraft 2
Make Model Name	UAV - Unpiloted Aerial Vehicle
Person 1
Function	Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Person 2
Function	Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Conflict Airborne Conflict Conflict NMAC Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Published Material / Policy

A flight crew in lax airspace reported passing close by what appeared to be drone at approximately 8;000 ft enroute to sna then taking evasive action from a TCAS traffic alert at 3;000 ft on approach.