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Air carrier medium large transport altitude deviation excursion from clearance altitude in response to TCASII RA.
| Attributes | |
| ACN | 198962 |
| Time | |
| Date | 199201 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : bpr airport : dfw |
| State Reference | TX |
| Altitude | msl bound lower : 10500 msl bound upper : 11000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : dfw |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other |
| Flight Phase | cruise other descent other |
| Route In Use | arrival star : star |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 230 flight time total : 10000 flight time type : 800 |
| ASRS Report | 198962 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| 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 |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
While on boids arrival into dfw TCASII issued a 'descend now' for an RA traffic at about 10 O'clock and 3-4 mi. As per TCASII descended to 10500 ft and TCASII changed to 'monitor vertical speed' and at about the same time a 'clear of conflict.' traffic was never visually idented and ATC said that the traffic was behind us.
Original NASA ASRS Text
Title: ACR MLG ALTDEV EXCURSION FROM CLRNC ALT IN RESPONSE TO TCASII RA.
Narrative: WHILE ON BOIDS ARR INTO DFW TCASII ISSUED A 'DSND NOW' FOR AN RA TFC AT ABOUT 10 O'CLOCK AND 3-4 MI. AS PER TCASII DSNDED TO 10500 FT AND TCASII CHANGED TO 'MONITOR VERT SPD' AND AT ABOUT THE SAME TIME A 'CLR OF CONFLICT.' TFC WAS NEVER VISUALLY IDENTED AND ATC SAID THAT THE TFC WAS BEHIND US.
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.