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Heading track deviation when air carrier flight crew unable to determine ATC clearance requirements reference heading on departure.
| Attributes | |
| ACN | 233719 |
| Time | |
| Date | 199302 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : bog |
| State Reference | FO |
| Altitude | agl bound lower : 300 agl bound upper : 3000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : bog |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 4 Turbojet Eng |
| Navigation In Use | Other |
| Flight Phase | climbout : takeoff climbout : intermediate altitude climbout : initial |
| Route In Use | enroute : direct enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 85 flight time total : 18000 |
| ASRS Report | 233719 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | non adherence : clearance other anomaly other other spatial deviation |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | controller : issued new clearance flight crew : returned to intended course or assigned course |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Pilot Deviation other |
| Situations | |
| ATC Facility | other physical facility |
Narrative:
While taxiing out we received ATC clearance which called for an immediate left turn after takeoff. Shortly after becoming airborne, just as left turn was initiated, the tower advised to make a right turn. After immediate commencement of that instruction we were then directed to proceed to ??? Beacon. Attempts to locate this navigational facility were futile, and inquiries to tower and/or departure control were met with further confusing instructions, as were requests for further information ignored. Frequency of NAVAID we were directed to was volunteered by an anonymous pilot in the blind. Company procedures of only having 1 set of charts on board did not assist in locating unexpected navigation fixes. Finally obtained radar vectors, which were within 10 degrees of the aircraft heading at that time. During the preceding period, primary effort was directed to keeping the aircraft in VMC conditions. Later in flight, an en route controller complained of our departure path and failure to comply with instructions. Language was a definite factor in this incident.
Original NASA ASRS Text
Title: HDG TRACK DEV WHEN ACR FLC UNABLE TO DETERMINE ATC CLRNC REQUIREMENTS REF HDG ON DEP.
Narrative: WHILE TAXIING OUT WE RECEIVED ATC CLRNC WHICH CALLED FOR AN IMMEDIATE L TURN AFTER TKOF. SHORTLY AFTER BECOMING AIRBORNE, JUST AS L TURN WAS INITIATED, THE TWR ADVISED TO MAKE A R TURN. AFTER IMMEDIATE COMMENCEMENT OF THAT INSTRUCTION WE WERE THEN DIRECTED TO PROCEED TO ??? BEACON. ATTEMPTS TO LOCATE THIS NAVIGATIONAL FACILITY WERE FUTILE, AND INQUIRIES TO TWR AND/OR DEP CTL WERE MET WITH FURTHER CONFUSING INSTRUCTIONS, AS WERE REQUESTS FOR FURTHER INFO IGNORED. FREQ OF NAVAID WE WERE DIRECTED TO WAS VOLUNTEERED BY AN ANONYMOUS PLT IN THE BLIND. COMPANY PROCS OF ONLY HAVING 1 SET OF CHARTS ON BOARD DID NOT ASSIST IN LOCATING UNEXPECTED NAV FIXES. FINALLY OBTAINED RADAR VECTORS, WHICH WERE WITHIN 10 DEGS OF THE ACFT HDG AT THAT TIME. DURING THE PRECEDING PERIOD, PRIMARY EFFORT WAS DIRECTED TO KEEPING THE ACFT IN VMC CONDITIONS. LATER IN FLT, AN ENRTE CTLR COMPLAINED OF OUR DEP PATH AND FAILURE TO COMPLY WITH INSTRUCTIONS. LANGUAGE WAS A DEFINITE FACTOR IN THIS 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.