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Large transport on arrival in level flight advised traffic 500 ft below to pass under and 'maintain 11000 ft.' received TCASII RA and climbed.
| Attributes | |
| ACN | 212718 |
| Time | |
| Date | 199206 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : ard |
| State Reference | PA |
| Altitude | msl bound lower : 11000 msl bound upper : 11500 |
| Environment | |
| Flight Conditions | Marginal |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : n90 |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport |
| Flight Phase | cruise other descent other |
| Route In Use | arrival other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 14000 |
| ASRS Report | 212718 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other controllera |
| Resolutory Action | flight crew : took evasive action |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | vertical : 500 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
While working ny approach on the nanci 4 arrival, ATC advised that we had known traffic 500 ft below us that would cross under us and that we were to 'maintain 11000 ft.' as we closed on the traffic we received a 'climb, climb,' TCASII RA. Our aircraft was climbed to approximately 11500 ft. We immediately advised the controller that we're climbing in response to a RA from our TCASII system. The controller was upset and stated that he had provided legal separation. We returned to our assigned altitude and completed to arrival.
Original NASA ASRS Text
Title: LGT ON ARR IN LEVEL FLT ADVISED TFC 500 FT BELOW TO PASS UNDER AND 'MAINTAIN 11000 FT.' RECEIVED TCASII RA AND CLBED.
Narrative: WHILE WORKING NY APCH ON THE NANCI 4 ARR, ATC ADVISED THAT WE HAD KNOWN TFC 500 FT BELOW US THAT WOULD CROSS UNDER US AND THAT WE WERE TO 'MAINTAIN 11000 FT.' AS WE CLOSED ON THE TFC WE RECEIVED A 'CLB, CLB,' TCASII RA. OUR ACFT WAS CLBED TO APPROX 11500 FT. WE IMMEDIATELY ADVISED THE CTLR THAT WE'RE CLBING IN RESPONSE TO A RA FROM OUR TCASII SYS. THE CTLR WAS UPSET AND STATED THAT HE HAD PROVIDED LEGAL SEPARATION. WE RETURNED TO OUR ASSIGNED ALT AND COMPLETED TO ARR.
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.