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After receiving climb clearance, a B737 leaves cruise altitude in ZJX, fl, airspace and conflicts with a B727. TCASII RA keeps aircraft separated.
| Attributes | |
| ACN | 394273 |
| Time | |
| Date | 199802 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : crg |
| State Reference | FL |
| Altitude | msl bound lower : 29000 msl bound upper : 29600 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zjx |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | B727 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 2400 |
| ASRS Report | 394273 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | controller : issued new clearance flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 15000 vertical : 800 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
While level at FL290, center cleared us to FL330. Air carrier X shortly after leaving FL290 heading north approximately 15 mi south of craig VOR, receive TA on TCASII. Approximately 29600 ft, I start looking out while captain flew. Shortly after that the TA became an RA. Captain started to take evasive maneuvers according to TCASII, decrease climb approximately 500 FPM. Captain called center while center called captain I believe. Captain started left turn, first officer spotted traffic about 4-5 mi out. Then center reclred us to FL290 and turn 270 degrees. First officer, watch, believed to be B727, aircraft passed off right side approximately 2-3 mi, 800 ft vertical separation. Resume course back to bos. Rest of flight uneventful. I believe that our climb rate was higher than the B727, which I believe was climbing to another higher altitude. The conflict altitude was FL310. There were 2 aircraft over each on the TCASII at start, all were going in the same direction as us and the conflict aircraft right at us which might have added to the confusion.
Original NASA ASRS Text
Title: AFTER RECEIVING CLB CLRNC, A B737 LEAVES CRUISE ALT IN ZJX, FL, AIRSPACE AND CONFLICTS WITH A B727. TCASII RA KEEPS ACFT SEPARATED.
Narrative: WHILE LEVEL AT FL290, CTR CLRED US TO FL330. ACR X SHORTLY AFTER LEAVING FL290 HEADING N APPROX 15 MI S OF CRAIG VOR, RECEIVE TA ON TCASII. APPROX 29600 FT, I START LOOKING OUT WHILE CAPT FLEW. SHORTLY AFTER THAT THE TA BECAME AN RA. CAPT STARTED TO TAKE EVASIVE MANEUVERS ACCORDING TO TCASII, DECREASE CLB APPROX 500 FPM. CAPT CALLED CTR WHILE CTR CALLED CAPT I BELIEVE. CAPT STARTED L TURN, FO SPOTTED TFC ABOUT 4-5 MI OUT. THEN CTR RECLRED US TO FL290 AND TURN 270 DEGS. FO, WATCH, BELIEVED TO BE B727, ACFT PASSED OFF R SIDE APPROX 2-3 MI, 800 FT VERT SEPARATION. RESUME COURSE BACK TO BOS. REST OF FLT UNEVENTFUL. I BELIEVE THAT OUR CLB RATE WAS HIGHER THAN THE B727, WHICH I BELIEVE WAS CLBING TO ANOTHER HIGHER ALT. THE CONFLICT ALT WAS FL310. THERE WERE 2 ACFT OVER EACH ON THE TCASII AT START, ALL WERE GOING IN THE SAME DIRECTION AS US AND THE CONFLICT ACFT RIGHT AT US WHICH MIGHT HAVE ADDED TO THE CONFUSION.
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.