Narrative:

Turning final for runway 27 at san; abeam cijhi; at approximately 4000 ft MSL; I saw what appeared to be a drone/unmanned aerial vehicle (uav); fly directly across my nose within 100 ft vertical and 100 ft horizontal. The vehicle was silver in color; shiny on the right and appeared to be in the shape of an 'H'; with the center portion being longer than the edges. I estimate the entire vehicle was 12-24 inches long and possibly had props on the left and right edges. The vehicle was moving from my left to my right; heading south to north. I immediately called it out to my captain; but the glare-shield kept him from seeing it. I did not have to maneuver to avoid the uav; as it passed off my right side and I had already established a clear line of sight. I landed uneventfully at san; upon landing; I reported the uav and close pass to ATC with the same description as above. San diego ground informed me that another carrier aircraft had just reported the same uav traffic and near miss on their landing just minutes prior to our arrival. I spoke with company flight safety and gave my report. No damage was taken to company equipment and no passengers were affected by the incident.

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Original NASA ASRS Text

Title: Air carrier First Officer reports a NMAC with a drone at 4;000 feet during approach to SAN.

Narrative: Turning final for Runway 27 at SAN; abeam CIJHI; at approximately 4000 FT MSL; I saw what appeared to be a drone/Unmanned Aerial Vehicle (UAV); fly directly across my nose within 100 FT vertical and 100 FT horizontal. The vehicle was silver in color; shiny on the right and appeared to be in the shape of an 'H'; with the center portion being longer than the edges. I estimate the entire vehicle was 12-24 inches long and possibly had Props on the left and right edges. The vehicle was moving from my left to my right; heading south to north. I immediately called it out to my Captain; but the glare-shield kept him from seeing it. I did not have to maneuver to avoid the UAV; as it passed off my right side and I had already established a clear line of sight. I landed uneventfully at SAN; upon landing; I reported the UAV and close pass to ATC with the same description as above. San Diego Ground informed me that another carrier aircraft had just reported the same UAV traffic and near miss on their landing just minutes prior to our arrival. I spoke with Company Flight Safety and gave my report. No damage was taken to Company equipment and no Passengers were affected by the incident.

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.