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DC9 aircraft on vectors for approach was twice assigned runway 21L by controller. When flight crew saw another aircraft appeared to be lined up for runway 21L they questioned the new controller who then said the runway was runway 21R.
| Attributes | |
| ACN | 399547 |
| Time | |
| Date | 199804 |
| Day | Sun |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : dtw |
| State Reference | MI |
| Altitude | msl bound lower : 4000 msl bound upper : 4000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : dtw |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Route In Use | arrival other enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : atp pilot : private |
| Experience | flight time last 90 days : 180 flight time total : 12000 flight time type : 1500 |
| ASRS Report | 399547 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 240 flight time total : 10000 flight time type : 4000 |
| ASRS Report | 399240 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | controller : issued new clearance flight crew : exited adverse environment |
| Consequence | Other |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Intra Facility Coordination Failure |
Narrative:
Approach at dtw told us to expect a visual to runway 21L at dtw. We came from the mizar arrival. We were being vectored and our position was northwest of the airport. We again asked approach to verify our runway. They confirmed runway 21L. We switched to another approach controller. He turned us to an intercept heading and asked if we had the airport visually. We responded 'field in sight.' approach cleared us visual approach, maintain 4000 ft until 12 mi out, speed 180 KTS. We thought it was odd that we were crossing runway 21R final. It soon became apparent that we were converging with another aircraft on runway 21L final and 1000 ft above us. We asked approach again (third time) to confirm runway 21L. He (approach) replied we were cleared runway 21R and said, 'I thought you had got that.' we flew back to runway 21R localizer and completed an uneventful approach and landing. We had been told to expect runway 21L twice by approach. The final controller was not clear about which runway we were supposed to use. Approach was very busy and we were reluctant to ask again. WX was excellent so there was no problem seeing other aircraft on final at dtw.
Original NASA ASRS Text
Title: DC9 ACFT ON VECTORS FOR APCH WAS TWICE ASSIGNED RWY 21L BY CTLR. WHEN FLC SAW ANOTHER ACFT APPEARED TO BE LINED UP FOR RWY 21L THEY QUESTIONED THE NEW CTLR WHO THEN SAID THE RWY WAS RWY 21R.
Narrative: APCH AT DTW TOLD US TO EXPECT A VISUAL TO RWY 21L AT DTW. WE CAME FROM THE MIZAR ARR. WE WERE BEING VECTORED AND OUR POS WAS NW OF THE ARPT. WE AGAIN ASKED APCH TO VERIFY OUR RWY. THEY CONFIRMED RWY 21L. WE SWITCHED TO ANOTHER APCH CTLR. HE TURNED US TO AN INTERCEPT HDG AND ASKED IF WE HAD THE ARPT VISUALLY. WE RESPONDED 'FIELD IN SIGHT.' APCH CLRED US VISUAL APCH, MAINTAIN 4000 FT UNTIL 12 MI OUT, SPD 180 KTS. WE THOUGHT IT WAS ODD THAT WE WERE XING RWY 21R FINAL. IT SOON BECAME APPARENT THAT WE WERE CONVERGING WITH ANOTHER ACFT ON RWY 21L FINAL AND 1000 FT ABOVE US. WE ASKED APCH AGAIN (THIRD TIME) TO CONFIRM RWY 21L. HE (APCH) REPLIED WE WERE CLRED RWY 21R AND SAID, 'I THOUGHT YOU HAD GOT THAT.' WE FLEW BACK TO RWY 21R LOC AND COMPLETED AN UNEVENTFUL APCH AND LNDG. WE HAD BEEN TOLD TO EXPECT RWY 21L TWICE BY APCH. THE FINAL CTLR WAS NOT CLR ABOUT WHICH RWY WE WERE SUPPOSED TO USE. APCH WAS VERY BUSY AND WE WERE RELUCTANT TO ASK AGAIN. WX WAS EXCELLENT SO THERE WAS NO PROB SEEING OTHER ACFT ON FINAL AT DTW.
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.