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Air carrier on vectors for approach to msp has difficulty communicating with controller. He suspects equipment problem in ATC facility.
| Attributes | |
| ACN | 465830 |
| Time | |
| Date | 200003 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : msp.airport |
| State Reference | MN |
| Altitude | msl single value : 5000 |
| Environment | |
| Flight Conditions | Marginal |
| Weather Elements | Snow |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : m98.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Route In Use | arrival : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : m98.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | DC-10 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Route In Use | arrival : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : cfi |
| Experience | flight time last 90 days : 200 flight time total : 11500 flight time type : 3000 |
| ASRS Report | 465830 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe other anomaly other |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | controller : issued advisory controller : issued new clearance flight crew : overcame equipment problem |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance ATC Human Performance ATC Facility |
| Primary Problem | ATC Facility |
Narrative:
We were being vectored toward the runway 30L final. We were on an assigned of heading 050 degrees at 5000 ft. ATC called us, 'flight XXX, approach.' we acknowledged, 'flight XXX, go ahead.' ATC called, 'flight XXX, acknowledge the turn.' we responded, 'flight XXX, we haven't received any instructions to turn.' ATC, 'turn right to 140 degrees, we have called you 5 times with no response.' we acknowledged turn. ATC (with a new controller), 'flight XXX turn left 120 degrees, descend to 4000 ft.' the turn was needed to avoid a conflict with a DC10 on final approach. The DC10 was at our altitude and at our 12 O'clock position, 5 mi (on TCASII), prior to the turn. We saw the DC10 visually above the overcast. I believe that there was a failure with ATC radio equipment. Once the problem was fixed I believe the controller, with a sense of urgency, didn't allow enough time between radio calls to hear us, covering each others xmissions.
Original NASA ASRS Text
Title: ACR ON VECTORS FOR APCH TO MSP HAS DIFFICULTY COMMUNICATING WITH CTLR. HE SUSPECTS EQUIP PROB IN ATC FACILITY.
Narrative: WE WERE BEING VECTORED TOWARD THE RWY 30L FINAL. WE WERE ON AN ASSIGNED OF HDG 050 DEGS AT 5000 FT. ATC CALLED US, 'FLT XXX, APCH.' WE ACKNOWLEDGED, 'FLT XXX, GO AHEAD.' ATC CALLED, 'FLT XXX, ACKNOWLEDGE THE TURN.' WE RESPONDED, 'FLT XXX, WE HAVEN'T RECEIVED ANY INSTRUCTIONS TO TURN.' ATC, 'TURN R TO 140 DEGS, WE HAVE CALLED YOU 5 TIMES WITH NO RESPONSE.' WE ACKNOWLEDGED TURN. ATC (WITH A NEW CTLR), 'FLT XXX TURN L 120 DEGS, DSND TO 4000 FT.' THE TURN WAS NEEDED TO AVOID A CONFLICT WITH A DC10 ON FINAL APCH. THE DC10 WAS AT OUR ALT AND AT OUR 12 O'CLOCK POS, 5 MI (ON TCASII), PRIOR TO THE TURN. WE SAW THE DC10 VISUALLY ABOVE THE OVCST. I BELIEVE THAT THERE WAS A FAILURE WITH ATC RADIO EQUIP. ONCE THE PROB WAS FIXED I BELIEVE THE CTLR, WITH A SENSE OF URGENCY, DIDN'T ALLOW ENOUGH TIME BTWN RADIO CALLS TO HEAR US, COVERING EACH OTHERS XMISSIONS.
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.