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Flight crew of an medium large transport air carrier aircraft descended below assigned climb altitude in response to a TCASII RA.
| Attributes | |
| ACN | 246785 |
| Time | |
| Date | 199307 |
| Day | Mon |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : vwv |
| State Reference | OH |
| Altitude | msl bound lower : 14700 msl bound upper : 15000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zob |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : cfi |
| Experience | flight time last 90 days : 170 flight time total : 14940 flight time type : 8980 |
| ASRS Report | 246785 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : atp pilot : commercial |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance non adherence : required legal separation other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 6000 vertical : 600 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Our clearance was to climb to FL230, which we were doing. Climbing through 10300 ft ATC requested a 2000 FPM climb. Climbing through 15200 ft, ATC told us to maintain 15000 ft, and turn right 30 degrees, traffic 12 O'clock. We stopped climbing, and started descending back to 15000 ft immediately, while simultaneously commencing a 30 degree bank to the right. We saw traffic appear in blue on the TCASII. The traffic then changed to amber, followed by red and accompanied by an RA to descend. We descended to 14700 ft when the voice from the TCASII advised that we were clear of conflict. We then advised ATC that we took evasive action due to a TCASII RA.
Original NASA ASRS Text
Title: FLC OF AN MLG ACR ACFT DSNDED BELOW ASSIGNED CLB ALT IN RESPONSE TO A TCASII RA.
Narrative: OUR CLRNC WAS TO CLB TO FL230, WHICH WE WERE DOING. CLBING THROUGH 10300 FT ATC REQUESTED A 2000 FPM CLB. CLBING THROUGH 15200 FT, ATC TOLD US TO MAINTAIN 15000 FT, AND TURN R 30 DEGS, TFC 12 O'CLOCK. WE STOPPED CLBING, AND STARTED DSNDING BACK TO 15000 FT IMMEDIATELY, WHILE SIMULTANEOUSLY COMMENCING A 30 DEG BANK TO THE R. WE SAW TFC APPEAR IN BLUE ON THE TCASII. THE TFC THEN CHANGED TO AMBER, FOLLOWED BY RED AND ACCOMPANIED BY AN RA TO DSND. WE DSNDED TO 14700 FT WHEN THE VOICE FROM THE TCASII ADVISED THAT WE WERE CLR OF CONFLICT. WE THEN ADVISED ATC THAT WE TOOK EVASIVE ACTION DUE TO A TCASII RA.
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.