A B737-700 crew had a track deviation on the chily 1 SID departing phx.

Attributes
ACN	555227
Time
Date	200207
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	navaid : pxr.vortac
State Reference	AZ
Altitude	msl single value : 28000
Aircraft 1
Controlling Facilities	artcc : zab.artcc artcc : zla.artcc
Operator	common carrier : air carrier
Make Model Name	B737-700
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 240 flight time total : 8800 flight time type : 6800
ASRS Report	555227
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 180 flight time total : 2850 flight time type : 2850
ASRS Report	555228
Events
Anomaly	non adherence : company policies non adherence : far non adherence : published procedure other anomaly other other spatial deviation
Independent Detector	other controllera other controllerb other flight crewa
Resolutory Action	controller : issued alert flight crew : returned to intended or assigned course none taken : detected after the fact
Consequence	other
Supplementary
Problem Areas	Aircraft Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Missed turn at waypoint. Flight departed phx on the chily 1 departure. Following vectors, we were directed to intercept pxr 321 degree radial and continue SID. PF intercepted and tracked pxr 321 degree radial with VOR/localizer. A combination of forgetting to select LNAV and some confusion over FMC programming of the lynxx 7 into burbank caused an overfly of chily intersection. A normal course turn at chily is 65 degrees. PF executed 120 degree turn for timely route correction and avoidance of traffic to the north. Correction was complete in approximately 2 mins. ZAB ATC controller thought we had deviated into airspace south of course because of our abrupt correction. In fact, the deviation was north of course. Controllers later confirmed that no airspace or traffic conflicts took place. LNAV is a great tool, however, promotes complacency when navigating in other modes. Pilots must maintain better vigilance when not navigating in the primary LNAV mode. Since it is our primary mode of navigation, it should probably be stressed that it be used whenever feasible. Supplemental information from acn 555228: event occurred during cockpit distrs of frequency change, flight plan correction, FMS programming. Crew discussed importance of minimizing distrs during busy phases of flight. Event could have been prevented by PF exercising closer attention to approaching turn at chily intersection and selection of LNAV earlier in the flight path to assist in management of flight plan during busy portions of flight.

Original NASA ASRS Text

Title: A B737-700 CREW HAD A TRACK DEV ON THE CHILY 1 SID DEPARTING PHX.

Narrative: MISSED TURN AT WAYPOINT. FLT DEPARTED PHX ON THE CHILY 1 DEP. FOLLOWING VECTORS, WE WERE DIRECTED TO INTERCEPT PXR 321 DEG RADIAL AND CONTINUE SID. PF INTERCEPTED AND TRACKED PXR 321 DEG RADIAL WITH VOR/LOC. A COMBINATION OF FORGETTING TO SELECT LNAV AND SOME CONFUSION OVER FMC PROGRAMMING OF THE LYNXX 7 INTO BURBANK CAUSED AN OVERFLY OF CHILY INTXN. A NORMAL COURSE TURN AT CHILY IS 65 DEGS. PF EXECUTED 120 DEG TURN FOR TIMELY RTE CORRECTION AND AVOIDANCE OF TFC TO THE N. CORRECTION WAS COMPLETE IN APPROX 2 MINS. ZAB ATC CTLR THOUGHT WE HAD DEVIATED INTO AIRSPACE S OF COURSE BECAUSE OF OUR ABRUPT CORRECTION. IN FACT, THE DEV WAS N OF COURSE. CTLRS LATER CONFIRMED THAT NO AIRSPACE OR TFC CONFLICTS TOOK PLACE. LNAV IS A GREAT TOOL, HOWEVER, PROMOTES COMPLACENCY WHEN NAVING IN OTHER MODES. PLTS MUST MAINTAIN BETTER VIGILANCE WHEN NOT NAVING IN THE PRIMARY LNAV MODE. SINCE IT IS OUR PRIMARY MODE OF NAV, IT SHOULD PROBABLY BE STRESSED THAT IT BE USED WHENEVER FEASIBLE. SUPPLEMENTAL INFO FROM ACN 555228: EVENT OCCURRED DURING COCKPIT DISTRS OF FREQ CHANGE, FLT PLAN CORRECTION, FMS PROGRAMMING. CREW DISCUSSED IMPORTANCE OF MINIMIZING DISTRS DURING BUSY PHASES OF FLT. EVENT COULD HAVE BEEN PREVENTED BY PF EXERCISING CLOSER ATTN TO APCHING TURN AT CHILY INTXN AND SELECTION OF LNAV EARLIER IN THE FLT PATH TO ASSIST IN MGMNT OF FLT PLAN DURING BUSY PORTIONS OF FLT.

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.