A B767ER departing lfpg on the atrex 1A SID turned prematurely after takeoff and exited the minimum ...

Attributes
ACN	909759
Time
Date	201009
Local Time Of Day	0601-1200
Place
Locale Reference	LFPG.Airport
State Reference	FO
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	B767 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Initial Climb
Route In Use	SID ATREX 1A
Flight Plan	IFR
Component
Aircraft Component	Autoflight System
Person 1
Function	Pilot Flying First Officer
Qualification	Flight Crew Flight Engineer Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 127 Flight Crew Total 12000 Flight Crew Type 5000
Person 2
Function	Relief Pilot Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine Flight Crew Instrument
Experience	Flight Crew Last 90 Days 150 Flight Crew Total 15000 Flight Crew Type 5000
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy Deviation - Procedural Clearance Deviation - Track / Heading All Types

Narrative:

Departing runway 27L at lfpg. Flying atrex 1A departure SID. Used LNAV for departure with manual VOR on cgn for backup of initial course and turn distance. Took off and had LNAV capture. Began right turn at 1.5 DME on 266R off cgn as directed by flight director and verified with manual backup. Departure instructions on SID say 'intercept cgn R-266; at cgn 1.5 DME outbound turn right; intercept bt R329 to D10.1 bt' (no rollout heading to intercept the bt 329R is specified).rolled out of turn on 310 degree heading to intercept bt 329R using 20 degree intercept angle to prevent overshoot; due to close proximity of bt vor. Departure control advised we were departing noise corridor and gave us a 300 degree heading for intercept of bt 329R. No traffic or terrain conflicts were encountered. After intercepting 329R; the rest of departure was uneventful. The main thing I feel would help prevent this problem would be to specify on the SID; a rollout heading to intercept the bt 329R. This would then give a more specific intercept angle and hence a more specific ground track which would keep the aircraft in the corridor.

Original NASA ASRS Text

Title: A B767ER departing LFPG on the ATREX 1A SID turned prematurely after takeoff and exited the Minimum Noise Routing airspace.

Narrative: Departing Runway 27L at LFPG. Flying ATREX 1A departure SID. Used LNAV for departure with manual VOR on CGN for backup of initial course and turn distance. Took off and had LNAV capture. Began right turn at 1.5 DME on 266R off CGN as directed by flight director and verified with manual backup. Departure instructions on SID say 'Intercept CGN R-266; at CGN 1.5 DME outbound turn right; intercept BT R329 to D10.1 BT' (no rollout heading to intercept the BT 329R is specified).Rolled out of turn on 310 degree heading to intercept BT 329R using 20 degree intercept angle to prevent overshoot; due to close proximity of BT Vor. Departure Control advised we were departing noise corridor and gave us a 300 degree heading for intercept of BT 329R. No traffic or terrain conflicts were encountered. After intercepting 329R; the rest of departure was uneventful. The main thing I feel would help prevent this problem would be to specify on the SID; a rollout heading to intercept the BT 329R. This would then give a more specific intercept angle and hence a more specific ground track which would keep the aircraft in the corridor.

Data retrieved from NASA's ASRS site as of April 2012 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.

A B767ER departing lfpg on the atrex 1A SID turned prematurely after takeoff and exited the minimum noise routing airspace.