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Air carrier flight crew reacting to TCASII alert climbed out of assigned altitude and into ARTCC airspace without clearance.
| Attributes | |
| ACN | 175283 |
| Time | |
| Date | 199104 |
| Day | Thu |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : rdu |
| State Reference | NC |
| Altitude | msl bound lower : 10000 msl bound upper : 11300 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : dtw |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Flight Phase | climbout : intermediate altitude cruise other descent other |
| Route In Use | arrival other enroute airway : rdu enroute airway : zdc |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | climbout : intermediate altitude |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| ASRS Report | 175283 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : flight engineer pilot : commercial pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 6900 flight time type : 4000 |
| ASRS Report | 175569 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe inflight encounter other non adherence : clearance other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : took evasive action other |
| Consequence | Other |
| Miss Distance | vertical : 1400 |
| Supplementary | |
| Air Traffic Incident | Pilot Deviation Inter Facility Coordination Failure Operational Deviation |
| Situations | |
| ATC Facility | procedure or policy : unspecified |
Narrative:
Air carrier X received a TCASII alert. Aircraft advised me he was climbing to avoid traffic. I told him not to climb, but he could turn left or right to avoid traffic. Aircraft entered ZDC (rmt low) airspace. Supplemental information from acn 175569: while tracking the rdu 063 degree right to rdu (10000' MSL)( crew received a TCAS TA, 'traffic, traffic, traffic.' TCAS 5 mi scale indicated TA traffic to be 12 O'clock, less than 5 mi, 700' below us and climbing. Crew than received RA, 'climb, climb, climb,' and a vsi climb command at greater than 2000 FPM. Crew commenced climb and notified approach control of our altitude change. Approach control requested crew to remain at 10000' and turn left if necessary to avoid traffic. A left turn was made and the climb was stopped at 11300' MSL when the RA traffic passed behind our aircraft indicating 1400' below us. Crew then returned to 10000' and continued too a normal approach and landing at rdu. Crew at no time saw the conflicting traffic.
Original NASA ASRS Text
Title: ACR FLT CREW REACTING TO TCASII ALERT CLIMBED OUT OF ASSIGNED ALT AND INTO ARTCC AIRSPACE WITHOUT CLRNC.
Narrative: ACR X RECEIVED A TCASII ALERT. ACFT ADVISED ME HE WAS CLBING TO AVOID TFC. I TOLD HIM NOT TO CLB, BUT HE COULD TURN LEFT OR RIGHT TO AVOID TFC. ACFT ENTERED ZDC (RMT LOW) AIRSPACE. SUPPLEMENTAL INFO FROM ACN 175569: WHILE TRACKING THE RDU 063 DEG R TO RDU (10000' MSL)( CREW RECEIVED A TCAS TA, 'TFC, TFC, TFC.' TCAS 5 MI SCALE INDICATED TA TFC TO BE 12 O'CLOCK, LESS THAN 5 MI, 700' BELOW US AND CLBING. CREW THAN RECEIVED RA, 'CLB, CLB, CLB,' AND A VSI CLB COMMAND AT GREATER THAN 2000 FPM. CREW COMMENCED CLB AND NOTIFIED APCH CTL OF OUR ALT CHANGE. APCH CTL REQUESTED CREW TO REMAIN AT 10000' AND TURN LEFT IF NECESSARY TO AVOID TFC. A LEFT TURN WAS MADE AND THE CLB WAS STOPPED AT 11300' MSL WHEN THE RA TFC PASSED BEHIND OUR ACFT INDICATING 1400' BELOW US. CREW THEN RETURNED TO 10000' AND CONTINUED TOO A NORMAL APCH AND LNDG AT RDU. CREW AT NO TIME SAW THE CONFLICTING TFC.
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.