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Large transport flight crew being vectored for approach has TCASII RA to descend due to aircraft on approach to parallel runway.
| Attributes | |
| ACN | 339147 |
| Time | |
| Date | 199605 |
| Day | Mon |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : msp |
| State Reference | MN |
| Altitude | msl bound lower : 4500 msl bound upper : 7000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | tracon : msp |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent : approach |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | descent : approach |
| Route In Use | approach : straight in |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : instrument pilot : commercial |
| Experience | flight time last 90 days : 140 flight time total : 10000 flight time type : 2500 |
| ASRS Report | 339147 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : took evasive action other |
| Consequence | Other |
| Miss Distance | horizontal : 5999 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Cleared from this position, 3 mi southwest of kinns, descend to 4000 ft, turn to 90 degrees, descend to 3000 ft. A turn to 90 degrees would put us inside kinns while on the instruments with high rate of descent. Gear, speed brakes out to get down. Approach control was turning us to get us inside (ahead of) aircraft on opposite to runway 11L. As we turned, TCASII RA on aircraft on approach to runway 11L, 'descend, descend now.' instructed to continue turn to 110 degrees, level at 5000 ft, had to descend to 4500 ft before RA, 'clear of conflict.' approach controller seemed surprised when told we could not comply with clearance. Even if WX had been clear we would have had difficulty getting down.
Original NASA ASRS Text
Title: LGT FLC BEING VECTORED FOR APCH HAS TCASII RA TO DSND DUE TO ACFT ON APCH TO PARALLEL RWY.
Narrative: CLRED FROM THIS POS, 3 MI SW OF KINNS, DSND TO 4000 FT, TURN TO 90 DEGS, DSND TO 3000 FT. A TURN TO 90 DEGS WOULD PUT US INSIDE KINNS WHILE ON THE INSTS WITH HIGH RATE OF DSCNT. GEAR, SPD BRAKES OUT TO GET DOWN. APCH CTL WAS TURNING US TO GET US INSIDE (AHEAD OF) ACFT ON OPPOSITE TO RWY 11L. AS WE TURNED, TCASII RA ON ACFT ON APCH TO RWY 11L, 'DSND, DSND NOW.' INSTRUCTED TO CONTINUE TURN TO 110 DEGS, LEVEL AT 5000 FT, HAD TO DSND TO 4500 FT BEFORE RA, 'CLR OF CONFLICT.' APCH CTLR SEEMED SURPRISED WHEN TOLD WE COULD NOT COMPLY WITH CLRNC. EVEN IF WX HAD BEEN CLR WE WOULD HAVE HAD DIFFICULTY GETTING DOWN.
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.