A G200 crew departed tncm; failed to make a 'mandatory' r-hand turn after takeoff; and instead turned left direct on course.

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Attributes
ACN	682978
Time
Date	200601
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : tncm.airport
State Reference	FO
Altitude	agl single value : 1000
Environment
Flight Conditions	VMC
Light	Dusk
Aircraft 1
Controlling Facilities	tower : tncm.tower
Operator	general aviation : corporate
Make Model Name	Gulfstream 200 [G200] (IAI 1126 Galaxy)
Operating Under FAR Part	Part 91
Flight Phase	climbout : initial
Flight Plan	IFR
Person 1
Affiliation	company : corporate
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 5000 flight time type : 235
ASRS Report	682978
Person 2
Affiliation	company : charter
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : cfi pilot : multi engine
Experience	flight time last 90 days : 200 flight time total : 12000 flight time type : 1500
ASRS Report	683650
Events
Anomaly	non adherence : clearance non adherence : published procedure other spatial deviation
Independent Detector	other controllera
Resolutory Action	none taken : detected after the fact
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	Flight Crew Human Performance Chart Or Publication
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

On sunday; aircraft X (G200) was cleared onto runway 9; position and hold. I acknowledged and captain (mr X) moved the aircraft into position. As the previous aircraft cleared the runway from back-taxi; tower/departure 'cleared for takeoff; turn on course.' I acknowledged; we were both in terrain mode for GPWS on 10 mi scale. We talked about the mountain and towers straight ahead. We initiated takeoff and I thought the clearance negated the note in the takeoff section of commercial chart which stated; 'right-hand turn mandatory; hazard beacons on hills to east; must be visible.' conditions were clear/VMC; visibility 10+ mi; temperature 27 degrees; altimeter 30.03. We could both see the hills and towers. On takeoff; I told captain the closest turn would be left for on course (approximately 140 degrees versus 220 degrees to right). At no time were we any nearer the hills in the left turn than if we would have turned right. After approximately 90 degrees of turn; the controller said we 'were in a heap of trouble and we better say our best prayers.' I ask why and he replied; 'all turns are to the right.'

Original NASA ASRS Text

Title: A G200 CREW DEPARTED TNCM; FAILED TO MAKE A 'MANDATORY' R-HAND TURN AFTER TKOF; AND INSTEAD TURNED L DIRECT ON COURSE.

Narrative: ON SUNDAY; ACFT X (G200) WAS CLRED ONTO RWY 9; POS AND HOLD. I ACKNOWLEDGED AND CAPT (MR X) MOVED THE ACFT INTO POS. AS THE PREVIOUS ACFT CLRED THE RWY FROM BACK-TAXI; TWR/DEP 'CLRED FOR TKOF; TURN ON COURSE.' I ACKNOWLEDGED; WE WERE BOTH IN TERRAIN MODE FOR GPWS ON 10 MI SCALE. WE TALKED ABOUT THE MOUNTAIN AND TWRS STRAIGHT AHEAD. WE INITIATED TKOF AND I THOUGHT THE CLRNC NEGATED THE NOTE IN THE TKOF SECTION OF COMMERCIAL CHART WHICH STATED; 'R-HAND TURN MANDATORY; HAZARD BEACONS ON HILLS TO E; MUST BE VISIBLE.' CONDITIONS WERE CLR/VMC; VISIBILITY 10+ MI; TEMP 27 DEGS; ALTIMETER 30.03. WE COULD BOTH SEE THE HILLS AND TOWERS. ON TKOF; I TOLD CAPT THE CLOSEST TURN WOULD BE L FOR ON COURSE (APPROX 140 DEGS VERSUS 220 DEGS TO R). AT NO TIME WERE WE ANY NEARER THE HILLS IN THE L TURN THAN IF WE WOULD HAVE TURNED R. AFTER APPROX 90 DEGS OF TURN; THE CTLR SAID WE 'WERE IN A HEAP OF TROUBLE AND WE BETTER SAY OUR BEST PRAYERS.' I ASK WHY AND HE REPLIED; 'ALL TURNS ARE TO THE R.'

Data retrieved from NASA's ASRS site as of January 2009 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.