Heading track deviation when air carrier flight crew unable to determine ATC clearance requirements reference heading on departure.

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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.