Narrative:

Genot rwa 3/88 from dec/wed/93 requires controllers to include B757 aircraft with heavy aircraft regarding wake turbulence advisories. Ord TRACON is a non-quick look facility, which means controller need only miss targets by required minima. Because we have no designation for B757's like the 'H' for heavies (that is displayed on all scopes regardless of position) a controller missing a target that is not a 'quick look' target cannot determine if the aircraft is a B727. Therefore, the controller is unable to effectively administer 7110.65H requirements for using good judgement and issue wake turbulence advisories accordingly. The ord departure controller routinely climbs aircraft 3 mi behind non-quick looked targets. The potential safety problem could occur when the departure is climbing behind a B757 arrival which quite often operate as sow as 170 KTS in that area. Solution: national or local implementation of a alpha-character to identify B757 aircraft without a quick look of a full data block. Callback conversation with reporter revealed the following information: reporter stated that suggestion was submitted to fab committee to include a symbol for this type of aircraft. Fab supposedly recommended that it be incorporated in the ARTS automation by indicating an 'X.' reporter said that it is now waiting headquarters approval. A ucr has been filed. Departure has a full data block while the arrs coming into the same airspace are a limited data block. Both aircraft are separated by 1000 ft, but the departure controller can climb above the arrival at 7000 ft per their procedure. This is called prearrange departure procedure. The arrival is descending to 7000 ft and the departure is climbing to 6000 ft. The limited data block shows and aircraft, the altitude and if the aircraft is a heavy.

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Original NASA ASRS Text

Title: CTLR CLAIMS THAT TRACKED TARGETS IN ANOTHER CTLR'S AIRSPACE DO NOT INDICATE IN THE DATA BLOCK WHETHER THE ACFT IS AN ADVANCED COCKPIT LGT AND A WAKE TURB ADVISORY IS REQUIRED.

Narrative: GENOT RWA 3/88 FROM DEC/WED/93 REQUIRES CTLRS TO INCLUDE B757 ACFT WITH HVY ACFT REGARDING WAKE TURB ADVISORIES. ORD TRACON IS A NON-QUICK LOOK FACILITY, WHICH MEANS CTLR NEED ONLY MISS TARGETS BY REQUIRED MINIMA. BECAUSE WE HAVE NO DESIGNATION FOR B757'S LIKE THE 'H' FOR HEAVIES (THAT IS DISPLAYED ON ALL SCOPES REGARDLESS OF POS) A CTLR MISSING A TARGET THAT IS NOT A 'QUICK LOOK' TARGET CANNOT DETERMINE IF THE ACFT IS A B727. THEREFORE, THE CTLR IS UNABLE TO EFFECTIVELY ADMINISTER 7110.65H REQUIREMENTS FOR USING GOOD JUDGEMENT AND ISSUE WAKE TURB ADVISORIES ACCORDINGLY. THE ORD DEP CTLR ROUTINELY CLBS ACFT 3 MI BEHIND NON-QUICK LOOKED TARGETS. THE POTENTIAL SAFETY PROB COULD OCCUR WHEN THE DEP IS CLBING BEHIND A B757 ARR WHICH QUITE OFTEN OPERATE AS SOW AS 170 KTS IN THAT AREA. SOLUTION: NATIONAL OR LCL IMPLEMENTATION OF A ALPHA-CHARACTER TO IDENT B757 ACFT WITHOUT A QUICK LOOK OF A FULL DATA BLOCK. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATED THAT SUGGESTION WAS SUBMITTED TO FAB COMMITTEE TO INCLUDE A SYMBOL FOR THIS TYPE OF ACFT. FAB SUPPOSEDLY RECOMMENDED THAT IT BE INCORPORATED IN THE ARTS AUTOMATION BY INDICATING AN 'X.' RPTR SAID THAT IT IS NOW WAITING HEADQUARTERS APPROVAL. A UCR HAS BEEN FILED. DEP HAS A FULL DATA BLOCK WHILE THE ARRS COMING INTO THE SAME AIRSPACE ARE A LIMITED DATA BLOCK. BOTH ACFT ARE SEPARATED BY 1000 FT, BUT THE DEP CTLR CAN CLB ABOVE THE ARR AT 7000 FT PER THEIR PROC. THIS IS CALLED PREARRANGE DEP PROC. THE ARR IS DSNDING TO 7000 FT AND THE DEP IS CLBING TO 6000 FT. THE LIMITED DATA BLOCK SHOWS AND ACFT, THE ALT AND IF THE ACFT IS A HVY.

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.