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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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DC9 descending to mizar got TCASII RA to climb. Traffic depicted directly below 2200 ft. Reporter was level 12000 ft and climbed to 13000 ft, RA ended and returned to 12000 ft. No traffic conflict. Controller advised there was 2000 ft separation.
| Attributes | |
| ACN | 353490 |
| Time | |
| Date | 199611 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : clr airport : dtw |
| State Reference | MI |
| Altitude | msl bound lower : 12000 msl bound upper : 13000 |
| 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 other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : atp |
| Experience | flight time last 90 days : 60 flight time total : 9000 flight time type : 2800 |
| ASRS Report | 353490 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | vertical : 2200 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
On descent to mizar, received TCASII RA to climb. Ivsi depicted aircraft directly below at -2200 ft. We immediately initiated climb up to 13000 ft (we were at 12000 ft). RA ended and we returned to our cleared altitude. During this maneuver we were in the middle of a frequency change to dtw approach. Approach was notified of four RA and stated they did not seem concerned and said commuter was 2000 ft below. Also, that no traffic conflict occurred.
Original NASA ASRS Text
Title: DC9 DSNDING TO MIZAR GOT TCASII RA TO CLB. TFC DEPICTED DIRECTLY BELOW 2200 FT. RPTR WAS LEVEL 12000 FT AND CLBED TO 13000 FT, RA ENDED AND RETURNED TO 12000 FT. NO TFC CONFLICT. CTLR ADVISED THERE WAS 2000 FT SEPARATION.
Narrative: ON DSCNT TO MIZAR, RECEIVED TCASII RA TO CLB. IVSI DEPICTED ACFT DIRECTLY BELOW AT -2200 FT. WE IMMEDIATELY INITIATED CLB UP TO 13000 FT (WE WERE AT 12000 FT). RA ENDED AND WE RETURNED TO OUR CLRED ALT. DURING THIS MANEUVER WE WERE IN THE MIDDLE OF A FREQ CHANGE TO DTW APCH. APCH WAS NOTIFIED OF FOUR RA AND STATED THEY DID NOT SEEM CONCERNED AND SAID COMMUTER WAS 2000 FT BELOW. ALSO, THAT NO TFC CONFLICT OCCURRED.
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.