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MD88 flight crew respond to a TCASII TA RA as ZTL controller issues non complied turn control instructions due to a crossing carj at same altitude, FL350.
| Attributes | |
| ACN | 614721 |
| Time | |
| Date | 200404 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : hmv.vortac |
| State Reference | TN |
| Altitude | msl bound lower : 35000 msl bound upper : 35700 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : ztl.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | MD-88 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : ztl.artcc |
| Operator | general aviation : corporate |
| Make Model Name | Regional Jet CL65, Undifferentiated or Other Model |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time total : 10000 |
| ASRS Report | 614721 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne critical non adherence : published procedure non adherence : clearance non adherence : required legal separation |
| Independent Detector | aircraft equipment : tcas other controllera other flight crewa |
| Resolutory Action | controller : issued new clearance flight crew : took evasive action flight crew : returned to assigned altitude |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 17400 vertical : 700 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Our aircraft on northwest heading at FL350 level, ZTL. Conflicting carj, FL350 level on southwest heading. TCASII sounded once in 'traffic mode,' followed immediately by an RA 'climb' command. RA was followed by PF and we exceeded assigned altitude by 700 ft before descending back to FL350. No warning given by ATC before TCASII event (TA or RA). ATC issued turn right to 360 degrees during RA. Instruction not followed. Turn commanded was into the conflicting traffic.
Original NASA ASRS Text
Title: MD88 FLT CREW RESPOND TO A TCASII TA RA AS ZTL CTLR ISSUES NON COMPLIED TURN CTL INSTRUCTIONS DUE TO A XING CARJ AT SAME ALT, FL350.
Narrative: OUR ACFT ON NW HDG AT FL350 LEVEL, ZTL. CONFLICTING CARJ, FL350 LEVEL ON SW HDG. TCASII SOUNDED ONCE IN 'TFC MODE,' FOLLOWED IMMEDIATELY BY AN RA 'CLB' COMMAND. RA WAS FOLLOWED BY PF AND WE EXCEEDED ASSIGNED ALT BY 700 FT BEFORE DSNDING BACK TO FL350. NO WARNING GIVEN BY ATC BEFORE TCASII EVENT (TA OR RA). ATC ISSUED TURN R TO 360 DEGS DURING RA. INSTRUCTION NOT FOLLOWED. TURN COMMANDED WAS INTO THE CONFLICTING TFC.
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.