Narrative:

Situation: solid IFR WX at amarillo airport (ceiling 300-400 ft). Wind out of northeast at 8 KTS. Departing runway 4. Landing runway 22 (due to ILS runway 4 OTS). Small aircraft X departed runway 4 on IFR flight plan. Pilot was instructed to turn left heading 350 after departure by tower controller. Air carrier Y was being vectored to VOR runway 22 approach by approach control. Air carrier Y intercepted final approximately 9 mi from airport at 5000 MSL and switched to tower frequency. Approach control did not observe data block on small aircraft X departure but did observe a primary radar target 4 mi north of airport. Small aircraft X pilot was instructed to squawk appropriate transponder code and to verify heading 350 degrees. Pilot responded with code, heading 350 degrees, and altitude 5300 MSL. Data block then appeared on small aircraft X approximately 7 mi northeast of airport (and approximately 3 mi northeast of air carrier Y) at 6000 MSL. After asking small aircraft X pilot again to verify heading, pilot initially responded with heading 350 and then corrected the heading to 035 (estimate small aircraft X and air carrier Y passed within 500- 700 ft of each other).

Google
 

Original NASA ASRS Text

Title: SMA X NON ADHERENCE TO ATC CLRNC WRONG HDG HAD LTSS FROM ACR Y. PLTDEV.

Narrative: SITUATION: SOLID IFR WX AT AMARILLO ARPT (CEILING 300-400 FT). WIND OUT OF NE AT 8 KTS. DEPARTING RWY 4. LNDG RWY 22 (DUE TO ILS RWY 4 OTS). SMA X DEPARTED RWY 4 ON IFR FLT PLAN. PLT WAS INSTRUCTED TO TURN L HDG 350 AFTER DEP BY TWR CTLR. ACR Y WAS BEING VECTORED TO VOR RWY 22 APCH BY APCH CTL. ACR Y INTERCEPTED FINAL APPROX 9 MI FROM ARPT AT 5000 MSL AND SWITCHED TO TWR FREQ. APCH CTL DID NOT OBSERVE DATA BLOCK ON SMA X DEP BUT DID OBSERVE A PRIMARY RADAR TARGET 4 MI N OF ARPT. SMA X PLT WAS INSTRUCTED TO SQUAWK APPROPRIATE TRANSPONDER CODE AND TO VERIFY HDG 350 DEGS. PLT RESPONDED WITH CODE, HDG 350 DEGS, AND ALT 5300 MSL. DATA BLOCK THEN APPEARED ON SMA X APPROX 7 MI NE OF ARPT (AND APPROX 3 MI NE OF ACR Y) AT 6000 MSL. AFTER ASKING SMA X PLT AGAIN TO VERIFY HDG, PLT INITIALLY RESPONDED WITH HDG 350 AND THEN CORRECTED THE HDG TO 035 (ESTIMATE SMA X AND ACR Y PASSED WITHIN 500- 700 FT OF EACH OTHER).

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.