|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||0601 To 1200|
|Locale Reference||atc facility : mke|
|Altitude||msl bound lower : 10000|
msl bound upper : 10000
|Controlling Facilities||tracon : mke|
tower : iah
|Make Model Name||Small Transport, Low Wing, 2 Turboprop Eng|
|Flight Phase||cruise other|
|Route In Use||enroute airway : mke|
|Operator||general aviation : personal|
|Make Model Name||Small Aircraft, Low Wing, 1 Eng, Retractable Gear|
|Flight Phase||cruise other|
|Affiliation||government : faa|
|Function||controller : approach|
|Qualification||controller : radar|
|Function||flight crew : captain|
oversight : pic
|Qualification||pilot : commercial|
pilot : instrument
|Anomaly||conflict : nmac|
|Independent Detector||other flight crewa|
|Resolutory Action||none taken : anomaly accepted|
|Miss Distance||horizontal : 300|
vertical : 300
|Primary Problem||Flight Crew Human Performance|
About XA20Z, while working ear/dr combined, I was giving VFR advisories to small aircraft Y. VFR racine, wi, to jackson, mi. Small aircraft Y wanted to climb to 11500'. I suggested he climb to 10500' account traffic eastbound at 11000'. About 5 mins later I noticed an overflt wbound at 10000'. I told small aircraft Y to stop climb at 9500', that traffic was 12 mi east of him wbound at 1000'. Small aircraft Y did not acknowledge. I then coordinated with chicago center reference traffic in the vicinity of bravo intersection. Then again I told small aircraft Y to maintain VFR at 9500', that traffic was 6 mi from him and again he did not acknowledge. Small transport X wbound at 10000' made his initial contact with me and said he just had a near miss. I believe the situation occurred because small aircraft Y was not paying attention. As soon as small transport X said he had a near miss, I asked small aircraft Y if he heard me, and he did. To prevent recurrence perhaps the pilot of small aircraft Y could be talked to.
Original NASA ASRS Text
Title: SMA PLT REQUESTED VFR TRAFFIC ADVISORIES AND THEN DIDN'T MONITOR FREQ NOR ADHERE TO SUGGESTED ALTS, RESULT WAS NMAC WITH IFR SMT.
Narrative: ABOUT XA20Z, WHILE WORKING EAR/DR COMBINED, I WAS GIVING VFR ADVISORIES TO SMA Y. VFR RACINE, WI, TO JACKSON, MI. SMA Y WANTED TO CLB TO 11500'. I SUGGESTED HE CLB TO 10500' ACCOUNT TFC EBND AT 11000'. ABOUT 5 MINS LATER I NOTICED AN OVERFLT WBOUND AT 10000'. I TOLD SMA Y TO STOP CLB AT 9500', THAT TFC WAS 12 MI E OF HIM WBOUND AT 1000'. SMA Y DID NOT ACKNOWLEDGE. I THEN COORDINATED WITH CHICAGO CENTER REF TFC IN THE VICINITY OF BRAVO INTXN. THEN AGAIN I TOLD SMA Y TO MAINTAIN VFR AT 9500', THAT TFC WAS 6 MI FROM HIM AND AGAIN HE DID NOT ACKNOWLEDGE. SMT X WBOUND AT 10000' MADE HIS INITIAL CONTACT WITH ME AND SAID HE JUST HAD A NEAR MISS. I BELIEVE THE SITUATION OCCURRED BECAUSE SMA Y WAS NOT PAYING ATTN. AS SOON AS SMT X SAID HE HAD A NEAR MISS, I ASKED SMA Y IF HE HEARD ME, AND HE DID. TO PREVENT RECURRENCE PERHAPS THE PLT OF SMA Y COULD BE TALKED TO.
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.