TCASII distraction causes SID radial overshoot.

Attributes
ACN	185207
Time
Date	199107
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : las
State Reference	NV
Altitude	msl bound lower : 7000 msl bound upper : 7000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : las
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other
Flight Phase	climbout : intermediate altitude
Route In Use	departure sid : sid
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 250 flight time total : 10500 flight time type : 7500
ASRS Report	185207
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	non adherence : published procedure non adherence : clearance other spatial deviation
Independent Detector	other controllera
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

On departure from las we overshot the las 211 degree radial and would up 3 mi south of course according to las departure control. This departure is very difficult to fly in a turbojet when traveling at 200-250 KTS because after departing runway 25 at las the oasis SID requires you to be at 7 DME on the 211 degree las, but not start your turn until 3 DME las off runway 25. This requires almost a 90 degree intercept to the las 211 degree radial only 6-7 DME from airport. We were distracted at the time we intercepted the radial because we were looking for traffic in our area pointed out by departure control. Also our TCAS had alerted us to this traffic so our attention was outside the aircraft and not on flying instruments. This distraction plus the close attention required to fly this departure and meet restriction caused the departure radial deviation.

Original NASA ASRS Text

Title: TCASII DISTRACTION CAUSES SID RADIAL OVERSHOOT.

Narrative: ON DEP FROM LAS WE OVERSHOT THE LAS 211 DEG RADIAL AND WOULD UP 3 MI S OF COURSE ACCORDING TO LAS DEP CTL. THIS DEP IS VERY DIFFICULT TO FLY IN A TURBOJET WHEN TRAVELING AT 200-250 KTS BECAUSE AFTER DEPARTING RWY 25 AT LAS THE OASIS SID REQUIRES YOU TO BE AT 7 DME ON THE 211 DEG LAS, BUT NOT START YOUR TURN UNTIL 3 DME LAS OFF RWY 25. THIS REQUIRES ALMOST A 90 DEG INTERCEPT TO THE LAS 211 DEG RADIAL ONLY 6-7 DME FROM ARPT. WE WERE DISTRACTED AT THE TIME WE INTERCEPTED THE RADIAL BECAUSE WE WERE LOOKING FOR TFC IN OUR AREA POINTED OUT BY DEP CTL. ALSO OUR TCAS HAD ALERTED US TO THIS TFC SO OUR ATTN WAS OUTSIDE THE ACFT AND NOT ON FLYING INSTRUMENTS. THIS DISTR PLUS THE CLOSE ATTN REQUIRED TO FLY THIS DEP AND MEET RESTRICTION CAUSED THE DEP RADIAL DEV.

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.