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Widebody transport readback wrong fix at least twice and ATC and communication radio operator missed it. Aircraft was at wrong fix when transfer took place to next ARTCC.
| Attributes | |
| ACN | 184417 |
| Time | |
| Date | 199107 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : sok |
| State Reference | HI |
| Altitude | msl bound lower : 35000 msl bound upper : 35000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zhn |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody Transport |
| Navigation In Use | Other |
| Flight Phase | cruise other |
| Route In Use | enroute : pacific enroute : other oceanic enroute airway : zhn enroute airway : zoa |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : non radar |
| Qualification | controller : radar |
| Experience | controller non radar : 7 controller radar : 3 |
| ASRS Report | 184417 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : non radar |
| Events | |
| Anomaly | non adherence : clearance other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Deviation Inter Facility Coordination Failure |
Narrative:
Widebody transport flight from guam to honolulu was rerted from its original flight plan of 20N/170W shila phnl to 20N/170W silva phnl. Aircraft progressed 180W estimated 170W and gave the ensuing fix as silva. About 55 mins later, the aircraft progressed 170W and gave the next fix as silva. The controller signed on the sector before me, missed the ensuing fix error and I missed the next fix error. This deviation was discovered and reported by a honolulu controller. Contributing factors: I was busy coordinating with honolulu cerap to obtain a more direct routing for another flight due to low fuel status. 40 percent to 50 percent of our odaps CRT position report messages are idented as having incorrect position, which are actually correct. This leads the controller to not rely on what the system checks are trying to tell him. Honolulu communication radio issued the rerte to the widebody transport flight and received a questionable readback and did not pursue clarification of the readback.
Original NASA ASRS Text
Title: WDB READBACK WRONG FIX AT LEAST TWICE AND ATC AND COM RADIO OPERATOR MISSED IT. ACFT WAS AT WRONG FIX WHEN TRANSFER TOOK PLACE TO NEXT ARTCC.
Narrative: WDB FLT FROM GUAM TO HONOLULU WAS RERTED FROM ITS ORIGINAL FLT PLAN OF 20N/170W SHILA PHNL TO 20N/170W SILVA PHNL. ACFT PROGRESSED 180W ESTIMATED 170W AND GAVE THE ENSUING FIX AS SILVA. ABOUT 55 MINS LATER, THE ACFT PROGRESSED 170W AND GAVE THE NEXT FIX AS SILVA. THE CTLR SIGNED ON THE SECTOR BEFORE ME, MISSED THE ENSUING FIX ERROR AND I MISSED THE NEXT FIX ERROR. THIS DEV WAS DISCOVERED AND RPTED BY A HONOLULU CTLR. CONTRIBUTING FACTORS: I WAS BUSY COORDINATING WITH HONOLULU CERAP TO OBTAIN A MORE DIRECT ROUTING FOR ANOTHER FLT DUE TO LOW FUEL STATUS. 40 PERCENT TO 50 PERCENT OF OUR ODAPS CRT POS RPT MESSAGES ARE IDENTED AS HAVING INCORRECT POS, WHICH ARE ACTUALLY CORRECT. THIS LEADS THE CTLR TO NOT RELY ON WHAT THE SYS CHKS ARE TRYING TO TELL HIM. HONOLULU COM RADIO ISSUED THE RERTE TO THE WDB FLT AND RECEIVED A QUESTIONABLE READBACK AND DID NOT PURSUE CLARIFICATION OF THE READBACK.
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.