37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Attributes | |
ACN | 300440 |
Time | |
Date | 199503 |
Day | Sun |
Local Time Of Day | 1801 To 2400 |
Place | |
Locale Reference | airport : rdu |
State Reference | NC |
Altitude | msl bound lower : 8000 msl bound upper : 9000 |
Environment | |
Flight Conditions | VMC |
Light | Night |
Aircraft 1 | |
Controlling Facilities | artcc : zdc tracon : rdu tracon : mia |
Operator | other |
Make Model Name | Tomcat (F14) |
Operating Under FAR Part | other : other |
Flight Phase | cruise other |
Flight Plan | IFR |
Aircraft 2 | |
Operator | common carrier : air carrier |
Make Model Name | DC-9 Undifferentiated or Other Model |
Operating Under FAR Part | Part 121 |
Flight Phase | descent other |
Route In Use | arrival other enroute : on vectors |
Flight Plan | IFR |
Person 1 | |
Affiliation | government : faa |
Function | controller : approach |
Qualification | controller : radar |
ASRS Report | 300440 |
Person 2 | |
Affiliation | government : military |
Function | oversight : pic |
Qualification | pilot : military |
Events | |
Anomaly | conflict : airborne less severe non adherence : far non adherence : published procedure non adherence : required legal separation |
Independent Detector | other controllera other flight crewa |
Resolutory Action | controller : issued new clearance other |
Consequence | Other |
Supplementary | |
Primary Problem | ATC Human Performance |
Air Traffic Incident | Operational Error |
Narrative:
I was e-w arrival/final combined at rdu TRACON. I call ZDC for approval of military overflt traffic at 10000 ft and asked the center how they wanted him (military X, F-14). The center controller said leave him at 10000 ft, and ZDC would descend air carrier Y, a DC9 to 9000 ft and air carrier Z to 8000 ft. I gave a handoff to north departure radar on military X. I later took handoffs on air carrier Z descending to 8000 ft and air carrier Y descending to 9000 ft, speed 470-480 KTS. Air carrier Y was high and I was concerned that he wouldn't get below military X. I called ZDC and told him to turn air carrier Y to a heading of 120 degrees (left turn) to insure separation. Air carrier Y was told to be at 9000 ft in 30 seconds by the ZDC controller and to delete the 250 KTS speed restr at 10000 ft. Air carrier Y took this to be an emergency situation, made a rapid descent to 9000 ft. I saw the data tag 8700 ft, then 8500 ft about the same time air carrier Z asked about the traffic (he never said TCASII, but I think this may have alerted). I told him to maintain visual and fly heading 180 degrees. Air carrier Y should have been assigned a heading of 120 degrees from center. I had notified ZDC several times to let them know I was not talking to air carrier Y. Center responded that he would separate them. When air carrier Y checked in I asked him to verify assigned altitude. He replied 9000 ft and I told him to maintain 9000 ft.
Original NASA ASRS Text
Title: AN OPERATIONAL ERROR WAS RPTED BY A RDU TRACON APCH CTLR WHEN A HDG WAS NOT ISSUED BY ZDC ARTCC TO AN ARR LNDG AT RDU.
Narrative: I WAS E-W ARR/FINAL COMBINED AT RDU TRACON. I CALL ZDC FOR APPROVAL OF MIL OVERFLT TFC AT 10000 FT AND ASKED THE CTR HOW THEY WANTED HIM (MIL X, F-14). THE CTR CTLR SAID LEAVE HIM AT 10000 FT, AND ZDC WOULD DSND ACR Y, A DC9 TO 9000 FT AND ACR Z TO 8000 FT. I GAVE A HDOF TO N DEP RADAR ON MIL X. I LATER TOOK HDOFS ON ACR Z DSNDING TO 8000 FT AND ACR Y DSNDING TO 9000 FT, SPD 470-480 KTS. ACR Y WAS HIGH AND I WAS CONCERNED THAT HE WOULDN'T GET BELOW MIL X. I CALLED ZDC AND TOLD HIM TO TURN ACR Y TO A HDG OF 120 DEGS (L TURN) TO INSURE SEPARATION. ACR Y WAS TOLD TO BE AT 9000 FT IN 30 SECONDS BY THE ZDC CTLR AND TO DELETE THE 250 KTS SPD RESTR AT 10000 FT. ACR Y TOOK THIS TO BE AN EMER SIT, MADE A RAPID DSCNT TO 9000 FT. I SAW THE DATA TAG 8700 FT, THEN 8500 FT ABOUT THE SAME TIME ACR Z ASKED ABOUT THE TFC (HE NEVER SAID TCASII, BUT I THINK THIS MAY HAVE ALERTED). I TOLD HIM TO MAINTAIN VISUAL AND FLY HDG 180 DEGS. ACR Y SHOULD HAVE BEEN ASSIGNED A HDG OF 120 DEGS FROM CTR. I HAD NOTIFIED ZDC SEVERAL TIMES TO LET THEM KNOW I WAS NOT TALKING TO ACR Y. CTR RESPONDED THAT HE WOULD SEPARATE THEM. WHEN ACR Y CHKED IN I ASKED HIM TO VERIFY ASSIGNED ALT. HE REPLIED 9000 FT AND I TOLD HIM TO MAINTAIN 9000 FT.
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.