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Altitude deviation altitude excursion during evasive action descent from TCASII TA. Potential conflict.
| Attributes | |
| ACN | 232587 |
| Time | |
| Date | 199303 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : atl |
| State Reference | GA |
| Altitude | msl bound lower : 8600 msl bound upper : 9000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Transport |
| Flight Phase | cruise other |
| Route In Use | enroute airway : ztl |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | cruise other |
| Route In Use | enroute : direct |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Experience | flight time last 90 days : 150 flight time total : 3500 flight time type : 1100 |
| ASRS Report | 232587 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 230 flight time total : 12000 flight time type : 7000 |
| ASRS Report | 232851 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : far non adherence : clearance other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : returned to intended course or assigned course flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 600 vertical : 600 |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | Pilot Deviation other |
Narrative:
Tracking inbound on the atl 041 degree radial approximately 60 mi north at altitude of 9000 ft MSL, we got a TCASII RA to descend immediately. We started a descent out of 9000 ft and at approximately 8600 ft MSL, we spotted traffic in our 12 O'clock position, approximately 9500 ft MSL. We alerted ZTL of conflicting traffic and climbed back to 9000 ft. ZTL advised us they had no radar contact with conflicting traffic until aircraft was approximately 10 mi behind us. Flight continued on to atl.
Original NASA ASRS Text
Title: ALTDEV ALT EXCURSION DURING EVASIVE ACTION DSCNT FROM TCASII TA. POTENTIAL CONFLICT.
Narrative: TRACKING INBOUND ON THE ATL 041 DEG RADIAL APPROX 60 MI N AT ALT OF 9000 FT MSL, WE GOT A TCASII RA TO DSND IMMEDIATELY. WE STARTED A DSCNT OUT OF 9000 FT AND AT APPROX 8600 FT MSL, WE SPOTTED TFC IN OUR 12 O'CLOCK POS, APPROX 9500 FT MSL. WE ALERTED ZTL OF CONFLICTING TFC AND CLBED BACK TO 9000 FT. ZTL ADVISED US THEY HAD NO RADAR CONTACT WITH CONFLICTING TFC UNTIL ACFT WAS APPROX 10 MI BEHIND US. FLT CONTINUED ON TO ATL.
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.