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A B727-200 flight crew experiences a TCASII TA while climbing from FL280 to a cleared altitude of FL310. Controller was thinking that the aircraft 'was not cleared to FL350.
| Attributes | |
| ACN | 463302 |
| Time | |
| Date | 200002 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : mdsd.artcc |
| State Reference | FO |
| Altitude | msl bound lower : 28000 msl bound upper : 31000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B727-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : enroute altitude change |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : mdsd.artcc |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : instrument pilot : multi engine |
| Experience | flight time last 90 days : 190 flight time total : 3300 flight time type : 450 |
| ASRS Report | 463302 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument pilot : multi engine |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | aircraft equipment : tcas other controllera |
| Resolutory Action | controller : separated traffic controller : issued new clearance flight crew : took evasive action |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Problem Areas | Airspace Structure Flight Crew Human Performance ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
After entering into santo domingo center (dominican republic) on position veska, at FL280, I told the first officer to call santo domingo control and ask for the conditions at FL350 and request a higher altitude. After a min santo domingo replied that they didn't have reports at FL350. We check our performance on WX information to climb to FL350. After a few mins santo domingo control asked us if we want to climb to FL350, I said negative due to winds. 2 or 3 mins later santo domingo control clear us to FL310, so we started to climb, at FL290 we get a TA alert. I disconnected the autoplt on start turn to the right. At this point santa domingo control instructed us to turn to 090 degree heading immediately, and said 'you were never clear to climb to FL350. We answer, 'correct, we are clear to FL310,' they reply 'you were never clear to FL350. We answer again, 'that is correct, you cleared us to climb to FL310.' after a few words, I requested them to check the recorder and santo domingo control accepted. We were waiting for the answer that we never got. Later we were xferred to port-au-prince control and then to ZMA. No further incident.
Original NASA ASRS Text
Title: A B727-200 FLC EXPERIENCES A TCASII TA WHILE CLBING FROM FL280 TO A CLRED ALT OF FL310. CTLR WAS THINKING THAT THE ACFT 'WAS NOT CLRED TO FL350.
Narrative: AFTER ENTERING INTO SANTO DOMINGO CTR (DOMINICAN REPUBLIC) ON POS VESKA, AT FL280, I TOLD THE FO TO CALL SANTO DOMINGO CTL AND ASK FOR THE CONDITIONS AT FL350 AND REQUEST A HIGHER ALT. AFTER A MIN SANTO DOMINGO REPLIED THAT THEY DIDN'T HAVE RPTS AT FL350. WE CHK OUR PERFORMANCE ON WX INFO TO CLB TO FL350. AFTER A FEW MINS SANTO DOMINGO CTL ASKED US IF WE WANT TO CLB TO FL350, I SAID NEGATIVE DUE TO WINDS. 2 OR 3 MINS LATER SANTO DOMINGO CTL CLR US TO FL310, SO WE STARTED TO CLB, AT FL290 WE GET A TA ALERT. I DISCONNECTED THE AUTOPLT ON START TURN TO THE R. AT THIS POINT SANTA DOMINGO CTL INSTRUCTED US TO TURN TO 090 DEG HDG IMMEDIATELY, AND SAID 'YOU WERE NEVER CLR TO CLB TO FL350. WE ANSWER, 'CORRECT, WE ARE CLR TO FL310,' THEY REPLY 'YOU WERE NEVER CLR TO FL350. WE ANSWER AGAIN, 'THAT IS CORRECT, YOU CLRED US TO CLB TO FL310.' AFTER A FEW WORDS, I REQUESTED THEM TO CHK THE RECORDER AND SANTO DOMINGO CTL ACCEPTED. WE WERE WAITING FOR THE ANSWER THAT WE NEVER GOT. LATER WE WERE XFERRED TO PORT-AU-PRINCE CTL AND THEN TO ZMA. NO FURTHER INCIDENT.
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.