Narrative:

On an IFR/IMC southbound (runway 14) gnats 1 departure from medford, using standard operating flight techniques and adhering to all applicable far's, the right turn was completed with an approximately 360 degree course to viole (fr 356), above the oed air traffic area and below 10000' MSL, the aircraft was approaching 250 KIAS. At viole a standard rate of turn was initiated to the left to track outbnd on the FL270 bearing from. However, the radius of turn brought the track of the airplane over the oed VOR. The left turn was completed outbnd on the oed VOR 216 degree right. All crossing altitudes were complied with. I believe this departure SID (gnats 1) is not feasible for southbound takeoff turbo-jet departures as presently structured. At present, it requires over 180 degree right turn, followed by at least a 50 degree left turn, followed by at least a 54 degree left turn within 7 NM. There should be (at least) an airspeed restriction in order to stay within protected airspace. This is a very busy departure. In order to correct this situation, 1) install approach radar; 2) limit airspeed on SID; 3) refine SID for southbound climb to a specific altitude, then turn on course to fr NDB; or 4) discontinue use of this departure.

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Original NASA ASRS Text

Title: PLT OF HIGH PERFORMANCE MLG OVERSHOT NORMAL PATTERN FOR SID.

Narrative: ON AN IFR/IMC SBND (RWY 14) GNATS 1 DEP FROM MEDFORD, USING STANDARD OPERATING FLT TECHNIQUES AND ADHERING TO ALL APPLICABLE FAR'S, THE RIGHT TURN WAS COMPLETED WITH AN APPROX 360 DEG COURSE TO VIOLE (FR 356), ABOVE THE OED ATA AND BELOW 10000' MSL, THE ACFT WAS APCHING 250 KIAS. AT VIOLE A STANDARD RATE OF TURN WAS INITIATED TO THE LEFT TO TRACK OUTBND ON THE FL270 BEARING FROM. HOWEVER, THE RADIUS OF TURN BROUGHT THE TRACK OF THE AIRPLANE OVER THE OED VOR. THE LEFT TURN WAS COMPLETED OUTBND ON THE OED VOR 216 DEG R. ALL XING ALTS WERE COMPLIED WITH. I BELIEVE THIS DEP SID (GNATS 1) IS NOT FEASIBLE FOR SBND TKOF TURBO-JET DEPS AS PRESENTLY STRUCTURED. AT PRESENT, IT REQUIRES OVER 180 DEG RIGHT TURN, FOLLOWED BY AT LEAST A 50 DEG LEFT TURN, FOLLOWED BY AT LEAST A 54 DEG LEFT TURN WITHIN 7 NM. THERE SHOULD BE (AT LEAST) AN AIRSPD RESTRICTION IN ORDER TO STAY WITHIN PROTECTED AIRSPACE. THIS IS A VERY BUSY DEP. IN ORDER TO CORRECT THIS SITUATION, 1) INSTALL APCH RADAR; 2) LIMIT AIRSPD ON SID; 3) REFINE SID FOR SBND CLB TO A SPECIFIC ALT, THEN TURN ON COURSE TO FR NDB; OR 4) DISCONTINUE USE OF THIS DEP.

Data retrieved from NASA's ASRS site as of August 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.