Narrative:

Flight originated in psp, IFR to crq. After trm, we were cleared to escon intersection on the ILS runway 24 approach to crq. We were cleared to 5500 ft, heading 240 degrees and 170 KIAS for sequencing into crq. Socal called traffic at our 12 O'clock position, about 1000 ft below and descending and within about 3 mi. We saw the traffic and reported it in sight, moving from our left to right (southeast aircraft). TCASII gave us a TA, which then went away. Socal then descended us to 3500 ft and a heading of 210 degrees and cleared us for the approach (about 2 mi northeast of escon). We started the descent to 3500 ft. We were on a 210 degree heading and about 4000 ft and suddenly we received the RA to 'climb.' we did not receive a TA prior, just an RA command. I looked to our right and saw an aircraft turning sharply towards us as if practicing some maneuvers. We initiated a climb and went to about 4500 ft and advised socal. The RA then went away and we continued the approach and landed without further incident. This is the second time in 2 weeks that I have received an RA into crq. TA's are always common as well. It seems that VFR pilots are unaware of the approach path into crq for the ILS runway 24 and are commonly maneuvering in the vicinity of escon intersection. Crq is a busy, popular airport. But with the amount of jet traffic, there needs to be more awareness of the arrs, ie, ILS runway 24, by local and transient pilots (GA). Possibly an enhancement or expansion of the class D airspace may be required.

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Original NASA ASRS Text

Title: A C560XL CAPT, ON THE ILS RWY 24 APCH TO CRQ, RESPONDED TO A TCASII RA TO CLB, WHILE IN THE VICINITY OF ESCON INTXN.

Narrative: FLT ORIGINATED IN PSP, IFR TO CRQ. AFTER TRM, WE WERE CLRED TO ESCON INTXN ON THE ILS RWY 24 APCH TO CRQ. WE WERE CLRED TO 5500 FT, HDG 240 DEGS AND 170 KIAS FOR SEQUENCING INTO CRQ. SOCAL CALLED TFC AT OUR 12 O'CLOCK POS, ABOUT 1000 FT BELOW AND DSNDING AND WITHIN ABOUT 3 MI. WE SAW THE TFC AND RPTED IT IN SIGHT, MOVING FROM OUR L TO R (SE ACFT). TCASII GAVE US A TA, WHICH THEN WENT AWAY. SOCAL THEN DSNDED US TO 3500 FT AND A HDG OF 210 DEGS AND CLRED US FOR THE APCH (ABOUT 2 MI NE OF ESCON). WE STARTED THE DSCNT TO 3500 FT. WE WERE ON A 210 DEG HDG AND ABOUT 4000 FT AND SUDDENLY WE RECEIVED THE RA TO 'CLB.' WE DID NOT RECEIVE A TA PRIOR, JUST AN RA COMMAND. I LOOKED TO OUR R AND SAW AN ACFT TURNING SHARPLY TOWARDS US AS IF PRACTICING SOME MANEUVERS. WE INITIATED A CLB AND WENT TO ABOUT 4500 FT AND ADVISED SOCAL. THE RA THEN WENT AWAY AND WE CONTINUED THE APCH AND LANDED WITHOUT FURTHER INCIDENT. THIS IS THE SECOND TIME IN 2 WKS THAT I HAVE RECEIVED AN RA INTO CRQ. TA'S ARE ALWAYS COMMON AS WELL. IT SEEMS THAT VFR PLTS ARE UNAWARE OF THE APCH PATH INTO CRQ FOR THE ILS RWY 24 AND ARE COMMONLY MANEUVERING IN THE VICINITY OF ESCON INTXN. CRQ IS A BUSY, POPULAR ARPT. BUT WITH THE AMOUNT OF JET TFC, THERE NEEDS TO BE MORE AWARENESS OF THE ARRS, IE, ILS RWY 24, BY LCL AND TRANSIENT PLTS (GA). POSSIBLY AN ENHANCEMENT OR EXPANSION OF THE CLASS D AIRSPACE MAY BE REQUIRED.

Data retrieved from NASA's ASRS site as of July 2007 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.