Navigation deviation during SID with FMC failure.

Attributes
ACN	298211
Time
Date	199503
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : pgy airport : san
State Reference	CA
Altitude	msl bound lower : 23000 msl bound upper : 23000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zla tracon : lax
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 other departure sid : sid
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 90 flight time total : 12000 flight time type : 3000
ASRS Report	298211
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : instrument pilot : flight engineer pilot : commercial
Experience	flight time last 90 days : 180 flight time total : 10000 flight time type : 3000
ASRS Report	298569
Events
Anomaly	aircraft equipment problem : less severe non adherence : clearance other anomaly other other spatial deviation
Independent Detector	other controllera other flight crewa
Resolutory Action	flight crew : became reoriented flight crew : returned to intended course or assigned course other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

During departure both FMC CDU's failed. I was hand flying aircraft and navigating to the brows intersection on the border 4 departure. At brows, I made a turn towards the jli VOR when our clearance had us proceeding to ipl VOR. The mistake was immediately recognized and a turn initiated towards ipl before rolling out on a heading to jli. The center cltr asked if we were going to ipl which we responded affirmative. Supplemental information from acn 298569: mistake was noted prior to rolling out on heading to jli.

Original NASA ASRS Text

Title: NAV DEV DURING SID WITH FMC FAILURE.

Narrative: DURING DEP BOTH FMC CDU'S FAILED. I WAS HAND FLYING ACFT AND NAVIGATING TO THE BROWS INTXN ON THE BORDER 4 DEP. AT BROWS, I MADE A TURN TOWARDS THE JLI VOR WHEN OUR CLRNC HAD US PROCEEDING TO IPL VOR. THE MISTAKE WAS IMMEDIATELY RECOGNIZED AND A TURN INITIATED TOWARDS IPL BEFORE ROLLING OUT ON A HDG TO JLI. THE CTR CLTR ASKED IF WE WERE GOING TO IPL WHICH WE RESPONDED AFFIRMATIVE. SUPPLEMENTAL INFO FROM ACN 298569: MISTAKE WAS NOTED PRIOR TO ROLLING OUT ON HDG TO JLI.

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.