B737-300 departs soldo RNAV departure track on initial climb for traffic separation.

Attributes
ACN	671387
Time
Date	200509
Place
Locale Reference	airport : dfw.airport
State Reference	TX
Altitude	msl single value : 1100
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : d10.tracon
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Navigation In Use	other Other
Flight Phase	climbout : intermediate altitude
Route In Use	departure sid : soldo
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : d10.tracon
Operator	common carrier : air carrier
Make Model Name	DC-9 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Experience	flight time last 90 days : 240 flight time total : 22500 flight time type : 4000
ASRS Report	671387
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	non adherence : clearance non adherence : published procedure non adherence : required legal separation other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	controller : issued alert controller : issued new clearance flight crew : took precautionary avoidance action
Supplementary
Problem Areas	ATC Human Performance Aircraft Airport Flight Crew Human Performance
Primary Problem	Ambiguous
Air Traffic Incident	Pilot Deviation

Narrative:

Upon departure from dfw runway 17R; LNAV was engaged at 400 ft AGL. Steering bars indicated a slight right turn about 15 degrees. Wind at the surface was 200 degrees at 17 KTS. First fix was trexx and FMS indicated a slightly left heading 165 degrees to trexx. Noticed a DC9 out off to the right from the west side of dfw. Pointed aircraft out and we flew left of command bars keeping good separation from DC9. Quickly rechecked FMS for trexx. About this time controller asked if we were on soldo 2 RNAV departure. Confirmed departure and then were given a heading of 130 degrees. Handed off to next controller. Given direct soldo.

Original NASA ASRS Text

Title: B737-300 DEPARTS SOLDO RNAV DEP TRACK ON INITIAL CLB FOR TFC SEPARATION.

Narrative: UPON DEP FROM DFW RWY 17R; LNAV WAS ENGAGED AT 400 FT AGL. STEERING BARS INDICATED A SLIGHT R TURN ABOUT 15 DEGS. WIND AT THE SURFACE WAS 200 DEGS AT 17 KTS. FIRST FIX WAS TREXX AND FMS INDICATED A SLIGHTLY L HEADING 165 DEGS TO TREXX. NOTICED A DC9 OUT OFF TO THE R FROM THE W SIDE OF DFW. POINTED ACFT OUT AND WE FLEW L OF COMMAND BARS KEEPING GOOD SEPARATION FROM DC9. QUICKLY RECHECKED FMS FOR TREXX. ABOUT THIS TIME CTLR ASKED IF WE WERE ON SOLDO 2 RNAV DEP. CONFIRMED DEP AND THEN WERE GIVEN A HDG OF 130 DEGS. HANDED OFF TO NEXT CTLR. GIVEN DIRECT SOLDO.

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.