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Flight crew of air carrier light transport aircraft deviated from assigned altitude in response to a TCASII RA.
| Attributes | |
| ACN | 227794 |
| Time | |
| Date | 199212 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : rdu |
| State Reference | NC |
| Altitude | msl bound lower : 10000 msl bound upper : 10800 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : rdu |
| Operator | common carrier : air carrier |
| Make Model Name | Light Transport, Low Wing, 2 Turboprop Eng |
| Navigation In Use | Other |
| Flight Phase | cruise other descent other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 240 flight time total : 6000 flight time type : 1000 |
| ASRS Report | 227794 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | vertical : 600 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
En route to rdu we were cleared to descend to 8000 ft by rdu approach. Our clearance was then amended to stop descent at 10000 ft. Level at 10000 ft we received TCASII TA of target at 10 O'clock, approximately 8 mi, minus 1000 ft and climbing. The advisory turned into an RA of climb in excess of 1500 FPM, traffic 10 O'clock minus 200 and climbing. As we climbed through 10800 ft, we established visual contact with traffic 9:30-10 O'clock less than a mi indicating minus 800 ft. As we started our climb I informed rdu approach that we were climbing TCASII. I received no response. After we cleared the conflict and were descending back to 1000 ft I queried rdu approach as to whether he had heard me say climbing/TCASII. He confirmed that he had. Our next contact was with an obviously different controller on the same frequency. The flight continued uneventfully.
Original NASA ASRS Text
Title: FLC OF ACR LTT ACFT DEVIATED FROM ASSIGNED ALT IN RESPONSE TO A TCASII RA.
Narrative: ENRTE TO RDU WE WERE CLRED TO DSND TO 8000 FT BY RDU APCH. OUR CLRNC WAS THEN AMENDED TO STOP DSCNT AT 10000 FT. LEVEL AT 10000 FT WE RECEIVED TCASII TA OF TARGET AT 10 O'CLOCK, APPROX 8 MI, MINUS 1000 FT AND CLBING. THE ADVISORY TURNED INTO AN RA OF CLB IN EXCESS OF 1500 FPM, TFC 10 O'CLOCK MINUS 200 AND CLBING. AS WE CLBED THROUGH 10800 FT, WE ESTABLISHED VISUAL CONTACT WITH TFC 9:30-10 O'CLOCK LESS THAN A MI INDICATING MINUS 800 FT. AS WE STARTED OUR CLB I INFORMED RDU APCH THAT WE WERE CLBING TCASII. I RECEIVED NO RESPONSE. AFTER WE CLRED THE CONFLICT AND WERE DSNDING BACK TO 1000 FT I QUERIED RDU APCH AS TO WHETHER HE HAD HEARD ME SAY CLBING/TCASII. HE CONFIRMED THAT HE HAD. OUR NEXT CONTACT WAS WITH AN OBVIOUSLY DIFFERENT CTLR ON THE SAME FREQ. THE FLT CONTINUED UNEVENTFULLY.
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.