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Flight crew of an air carrier medium large transport aircraft deviated from assigned altitude in response to a TCASII RA.
| Attributes | |
| ACN | 242121 |
| Time | |
| Date | 199305 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : hsv |
| State Reference | AL |
| Altitude | msl bound lower : 3800 msl bound upper : 4000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : hsv tower : ord |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Small Aircraft, High Wing, 1 Eng, Fixed Gear |
| Flight Phase | cruise other |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 200 flight time total : 11100 flight time type : 750 |
| ASRS Report | 242121 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other |
| Resolutory Action | flight crew : returned to intended course or assigned course flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | vertical : 700 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
While on approach at 4000 ft a TCASII TA occurred. When visual contact was made with the traffic, TCASII issued an RA to descend. While descending we contacted ATC to advise them we were departing our assigned altitude and they approved. At approximately 3800 the RA ceased. The other aircraft appeared to be a small high wing type which seemed to be maneuvering at approximately 4500 ft.
Original NASA ASRS Text
Title: FLC OF AN ACR MLG ACFT DEVIATED FROM ASSIGNED ALT IN RESPONSE TO A TCASII RA.
Narrative: WHILE ON APCH AT 4000 FT A TCASII TA OCCURRED. WHEN VISUAL CONTACT WAS MADE WITH THE TFC, TCASII ISSUED AN RA TO DSND. WHILE DSNDING WE CONTACTED ATC TO ADVISE THEM WE WERE DEPARTING OUR ASSIGNED ALT AND THEY APPROVED. AT APPROX 3800 THE RA CEASED. THE OTHER ACFT APPEARED TO BE A SMALL HIGH WING TYPE WHICH SEEMED TO BE MANEUVERING AT APPROX 4500 FT.
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.