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An air carrier flight crew flying across the south atlantic reports confusion regarding their ATC clearance.
| Attributes | |
| ACN | 440838 |
| Time | |
| Date | 199906 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : txkf.airport |
| State Reference | FO |
| Aircraft 1 | |
| Controlling Facilities | artcc : zny.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other other |
| Flight Phase | cruise : level |
| Route In Use | enroute : atlantic |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : multi engine |
| Experience | flight time last 90 days : 220 flight time total : 21000 flight time type : 9000 |
| ASRS Report | 440838 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial pilot : multi engine |
| Events | |
| Anomaly | other anomaly other other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance flight crew : returned to intended or assigned course |
| Consequence | faa : investigated |
| Supplementary | |
| Problem Areas | ATC Human Performance Flight Crew Human Performance |
| Primary Problem | Ambiguous |
| Air Traffic Incident | Pilot Deviation |
Narrative:
After takeoff we proceeded G-432 to targa. Passing targa requested direct owenz. Center replied they were unable due to traffic and for us to proceed via flight plan route (bergh, owenz, gxu, etc). Center then asked for our routing and we told them. They requested our estimate abeam flann. We constructed this point on our FMC (flann 242 degree radial at 26 NM) and relayed the estimate. At no time were we directed to proceed direct flann or to join G-432. About 150 NM past targa a ny oceanic supervisor idented himself and asked what our clearance was. After we relayed our original clearance, again, we were not told to proceed by any different route. After 5 mins, or so, the supervisor came back and told us that we were not flying our original clearance and that he was initiating an investigation into a possible pilot deviation.
Original NASA ASRS Text
Title: AN ACR FLC FLYING ACROSS THE SOUTH ATLANTIC RPTS CONFUSION REGARDING THEIR ATC CLRNC.
Narrative: AFTER TKOF WE PROCEEDED G-432 TO TARGA. PASSING TARGA REQUESTED DIRECT OWENZ. CTR REPLIED THEY WERE UNABLE DUE TO TFC AND FOR US TO PROCEED VIA FLT PLAN RTE (BERGH, OWENZ, GXU, ETC). CTR THEN ASKED FOR OUR ROUTING AND WE TOLD THEM. THEY REQUESTED OUR ESTIMATE ABEAM FLANN. WE CONSTRUCTED THIS POINT ON OUR FMC (FLANN 242 DEG RADIAL AT 26 NM) AND RELAYED THE ESTIMATE. AT NO TIME WERE WE DIRECTED TO PROCEED DIRECT FLANN OR TO JOIN G-432. ABOUT 150 NM PAST TARGA A NY OCEANIC SUPVR IDENTED HIMSELF AND ASKED WHAT OUR CLRNC WAS. AFTER WE RELAYED OUR ORIGINAL CLRNC, AGAIN, WE WERE NOT TOLD TO PROCEED BY ANY DIFFERENT RTE. AFTER 5 MINS, OR SO, THE SUPVR CAME BACK AND TOLD US THAT WE WERE NOT FLYING OUR ORIGINAL CLRNC AND THAT HE WAS INITIATING AN INVESTIGATION INTO A POSSIBLE PLTDEV.
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.