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An air carrier DC9 climbed 800 ft above their assigned altitude due to a TCASII RA. ATC was notified of their actions.
| Attributes | |
| ACN | 388660 |
| Time | |
| Date | 199712 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : bae |
| State Reference | WI |
| Altitude | msl bound lower : 29000 msl bound upper : 29800 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zau artcc : ztl |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude cruise other |
| Route In Use | enroute airway : zau |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 11500 |
| ASRS Report | 388660 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 165 flight time total : 4000 flight time type : 1250 |
| ASRS Report | 389464 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude 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 | other |
Narrative:
Received a resolution to climb from TCASII. Notified ATC (ZAU 121.37) that we were climbing due to TCASII instruction. Received a clear of conflict at FL298, then returned to FL290 after notifying ATC. No further problem. Separation from other aircraft unknown.
Original NASA ASRS Text
Title: AN ACR DC9 CLBED 800 FT ABOVE THEIR ASSIGNED ALT DUE TO A TCASII RA. ATC WAS NOTIFIED OF THEIR ACTIONS.
Narrative: RECEIVED A RESOLUTION TO CLB FROM TCASII. NOTIFIED ATC (ZAU 121.37) THAT WE WERE CLBING DUE TO TCASII INSTRUCTION. RECEIVED A CLR OF CONFLICT AT FL298, THEN RETURNED TO FL290 AFTER NOTIFYING ATC. NO FURTHER PROB. SEPARATION FROM OTHER ACFT UNKNOWN.
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.