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Flight crew of widebody transport air carrier aircraft deviated from assigned altitude in responding to a TCASII 'RA' resulting in no conflict.
| Attributes | |
| ACN | 211753 |
| Time | |
| Date | 199206 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : lmn |
| State Reference | IA |
| Altitude | msl bound lower : 27000 msl bound upper : 28000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zkc |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 3 Turbojet Eng |
| Navigation In Use | Other |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | descent other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 8800 flight time type : 120 |
| ASRS Report | 211753 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 75 flight time total : 13000 flight time type : 4500 |
| ASRS Report | 211453 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Miss Distance | horizontal : 6000 vertical : 500 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
TA/RA altitude on TCASII descended from FL280 to FL270 climbed back to FL280. Notified ATC of our deviation due to RA. They did not seem to have noticed.
Original NASA ASRS Text
Title: FLC OF WDB AIR CARRIER ACFT DEVIATED FROM ASSIGNED ALT IN RESPONDING TO A TCASII 'RA' RESULTING IN NO CONFLICT.
Narrative: TA/RA ALT ON TCASII DSNDED FROM FL280 TO FL270 CLBED BACK TO FL280. NOTIFIED ATC OF OUR DEV DUE TO RA. THEY DID NOT SEEM TO HAVE NOTICED.
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.