Track heading error departing slc by B757.

Attributes
ACN	458044
Time
Date	199912
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : slc.airport
State Reference	UT
Altitude	msl single value : 17000
Environment
Flight Conditions	IMC
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude climbout : vacating altitude
Route In Use	departure sid : mlf 3
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 180 flight time total : 13500 flight time type : 5000
ASRS Report	458044
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : less severe non adherence : far non adherence : clearance other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : provided flight assist flight crew : returned to intended or assigned course flight crew : became reoriented
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Our flight plan was slc direct ffm J9 mlf. This was loaded in the FMC. Our clearance was mlf 3 mlf. This was loaded in the FMC. There was a medical emergency on the field, our departure runway was changed from runway 34R to runway 34L. This was loaded in the FMC. When the runway was changed in the FMC (on taxi out), it dropped out the departure and reverted back to ffu. In the confusion, we missed the changes. On the departure, we flew slightly through the slc 193 degree radial and ATC advised us of this, gave us a right turn, and we resumed the departure. This is the end of the week after flying at night, 12 hour duty periods, short layovers, unable to get adequate rest, as well as adverse WX with 3 legs a night and up to 5 hours of situation time between legs with 5 hours of block time per night. Needless to say, we were both fatigued. Also, loading the CDU numerous times and having it drop out parts of the route after already briefing twice can be frustrating. A system that is designed to lessen the workload oftentimes becomes labor intensive.

Original NASA ASRS Text

Title: TRACK HDG ERROR DEPARTING SLC BY B757.

Narrative: OUR FLT PLAN WAS SLC DIRECT FFM J9 MLF. THIS WAS LOADED IN THE FMC. OUR CLRNC WAS MLF 3 MLF. THIS WAS LOADED IN THE FMC. THERE WAS A MEDICAL EMER ON THE FIELD, OUR DEP RWY WAS CHANGED FROM RWY 34R TO RWY 34L. THIS WAS LOADED IN THE FMC. WHEN THE RWY WAS CHANGED IN THE FMC (ON TAXI OUT), IT DROPPED OUT THE DEP AND REVERTED BACK TO FFU. IN THE CONFUSION, WE MISSED THE CHANGES. ON THE DEP, WE FLEW SLIGHTLY THROUGH THE SLC 193 DEG RADIAL AND ATC ADVISED US OF THIS, GAVE US A R TURN, AND WE RESUMED THE DEP. THIS IS THE END OF THE WK AFTER FLYING AT NIGHT, 12 HR DUTY PERIODS, SHORT LAYOVERS, UNABLE TO GET ADEQUATE REST, AS WELL AS ADVERSE WX WITH 3 LEGS A NIGHT AND UP TO 5 HRS OF SIT TIME BTWN LEGS WITH 5 HRS OF BLOCK TIME PER NIGHT. NEEDLESS TO SAY, WE WERE BOTH FATIGUED. ALSO, LOADING THE CDU NUMEROUS TIMES AND HAVING IT DROP OUT PARTS OF THE RTE AFTER ALREADY BRIEFING TWICE CAN BE FRUSTRATING. A SYS THAT IS DESIGNED TO LESSEN THE WORKLOAD OFTENTIMES BECOMES LABOR INTENSIVE.

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.