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Air carrier medium large transport altitude deviation excursion from clearance altitude in response to TCASII RA.
| Attributes | |
| ACN | 192210 |
| Time | |
| Date | 199110 |
| Day | Mon |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : ord |
| State Reference | IL |
| Altitude | msl bound lower : 10600 msl bound upper : 11000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : ord tracon : den |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | descent other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : flight engineer pilot : commercial pilot : cfi |
| Experience | flight time last 90 days : 140 flight time total : 1900 flight time type : 420 |
| ASRS Report | 192210 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : returned to intended course or assigned course none taken : anomaly accepted |
| Consequence | Other |
| Miss Distance | vertical : 900 |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
On a descent into chicago ord we received a TA followed shortly thereafter by an RA which commanded a descent for traffic. The traffic appeared on the TCASII as 300 ft above our altitude of 11000 ft. We descended to 10600 ft when the RA command ended. When we started our descent we called ATC to notify them of our descent due to a TCASII command. When the command ended we proceeded to climb back to our assigned altitude of 11000 ft.
Original NASA ASRS Text
Title: ACR MLG ALTDEV EXCURSION FROM CLRNC ALT IN RESPONSE TO TCASII RA.
Narrative: ON A DSCNT INTO CHICAGO ORD WE RECEIVED A TA FOLLOWED SHORTLY THEREAFTER BY AN RA WHICH COMMANDED A DSCNT FOR TFC. THE TFC APPEARED ON THE TCASII AS 300 FT ABOVE OUR ALT OF 11000 FT. WE DSNDED TO 10600 FT WHEN THE RA COMMAND ENDED. WHEN WE STARTED OUR DSCNT WE CALLED ATC TO NOTIFY THEM OF OUR DSCNT DUE TO A TCASII COMMAND. WHEN THE COMMAND ENDED WE PROCEEDED TO CLB BACK TO OUR ASSIGNED ALT OF 11000 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.