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An inbound S80 purposely overshoots its assigned altitude to avoid an outbound climbing twin beech which was not on center frequency, 30 mi south of fgt, mn.
| Attributes | |
| ACN | 443740 |
| Time | |
| Date | 199907 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : fgt.vortac |
| State Reference | MN |
| Altitude | msl bound lower : 10000 msl bound upper : 11000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zmp.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Super 80 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other vortac |
| Flight Phase | descent : intermediate altitude |
| Route In Use | arrival star : ns |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zmp.artcc |
| Operator | general aviation : corporate |
| Make Model Name | Beechcraft Twin Piston Undifferentiated or Other Model |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : vacating altitude |
| Route In Use | departure : vfr enroute airway : ns.airway |
| Flight Plan | None |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 443740 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument pilot : multi engine |
| Events | |
| Anomaly | conflict : airborne critical non adherence : far |
| Independent Detector | aircraft equipment : tcas other controllera |
| Resolutory Action | controller : issued advisory flight crew : took evasive action |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 4000 vertical : 400 |
| Supplementary | |
| Problem Areas | Aircraft Airspace Structure Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
On kaspr arrival msp, fgt 178 degree radial, 30 DME, 11000 ft, TCASII went from TA to RA 'descend.' altitude deviation 1000 ft low. ATC confirmed VFR traffic. Supplemental information from acn 442911: I was just finishing the last few aircraft of an arrival push. Subject air carrier X was the first in a group of 3 jet arrs inbound msp about 10 mi in trail each. A VFR target was observed about 3 mi ahead of air carrier X, climbing through 10000 ft. Air carrier X was descending to cross kaspr fix at 11000 ft, was about 11500 ft descending when I called traffic. Pilot advised he was responding or going to respond to an RA, unclr due to the fact other aircraft stepped on his transmission. He was observed descending to 10000 ft, then climbed back to 11000 ft after he cleared traffic. I asked him if he could identify other aircraft type. He said it had passed overhead, and he thought it was a twin beechcraft, but could not identify it as a specific model. Closest passage estimated less than 1 mi and 400 ft.
Original NASA ASRS Text
Title: AN INBOUND S80 PURPOSELY OVERSHOOTS ITS ASSIGNED ALT TO AVOID AN OUTBOUND CLBING TWIN BEECH WHICH WAS NOT ON CTR FREQ, 30 MI S OF FGT, MN.
Narrative: ON KASPR ARR MSP, FGT 178 DEG RADIAL, 30 DME, 11000 FT, TCASII WENT FROM TA TO RA 'DSND.' ALTDEV 1000 FT LOW. ATC CONFIRMED VFR TFC. SUPPLEMENTAL INFO FROM ACN 442911: I WAS JUST FINISHING THE LAST FEW ACFT OF AN ARR PUSH. SUBJECT ACR X WAS THE FIRST IN A GROUP OF 3 JET ARRS INBOUND MSP ABOUT 10 MI IN TRAIL EACH. A VFR TARGET WAS OBSERVED ABOUT 3 MI AHEAD OF ACR X, CLBING THROUGH 10000 FT. ACR X WAS DSNDING TO CROSS KASPR FIX AT 11000 FT, WAS ABOUT 11500 FT DSNDING WHEN I CALLED TFC. PLT ADVISED HE WAS RESPONDING OR GOING TO RESPOND TO AN RA, UNCLR DUE TO THE FACT OTHER ACFT STEPPED ON HIS XMISSION. HE WAS OBSERVED DSNDING TO 10000 FT, THEN CLBED BACK TO 11000 FT AFTER HE CLRED TFC. I ASKED HIM IF HE COULD IDENT OTHER ACFT TYPE. HE SAID IT HAD PASSED OVERHEAD, AND HE THOUGHT IT WAS A TWIN BEECHCRAFT, BUT COULD NOT IDENT IT AS A SPECIFIC MODEL. CLOSEST PASSAGE ESTIMATED LESS THAN 1 MI AND 400 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.