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Flight crew of an large transport deviated from assigned SID track due to mis-programming their FMC, resulting in ATC intervention to bring them back to course.
| Attributes | |
| ACN | 326610 |
| Time | |
| Date | 199601 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : sxc airport : sna |
| State Reference | CA |
| Altitude | msl bound lower : 13000 msl bound upper : 13500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zla |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| 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 : captain oversight : pic |
| Qualification | other other : other pilot : commercial pilot : flight engineer pilot : instrument pilot : atp |
| Experience | flight time last 90 days : 170 flight time total : 19000 flight time type : 750 |
| ASRS Report | 326610 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | non adherence : clearance other anomaly other other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | 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:
Our clearance on departure from sna was 'musel 5 departure heading 175 degrees to intercept the sxc 084 degree radial to sxc direct vtu as filed.' my mistake was selecting SXC17 in the FMC, which of course was not the sxc VOR, but rather a fix east of the VOR which is on the departure route. The sxc VOR is not on the departure route or in the FMC. At the SXC17 fix we turned direct to vtu. Fortunately the controller saw us turn toward vtu and turned us back to the west and stopped our climb at 13500 ft MSL. When the controller turned us back to the west, there was a B747 climbing out of 14400 ft at our 1 O'clock position and at least 3 to 4 mi away. I don't believe we created a conflict. Why did I select SXC17 and not enter sxc? I think I was too preoccupied with the sna noise abatement procedure and just saw sxc, not SXC17, and selected it. I even remember thinking there are five characters, but it didn't register that this is wrong.
Original NASA ASRS Text
Title: FLC OF AN LGT DEVIATED FROM ASSIGNED SID TRACK DUE TO MIS-PROGRAMMING THEIR FMC, RESULTING IN ATC INTERVENTION TO BRING THEM BACK TO COURSE.
Narrative: OUR CLRNC ON DEP FROM SNA WAS 'MUSEL 5 DEP HDG 175 DEGS TO INTERCEPT THE SXC 084 DEG RADIAL TO SXC DIRECT VTU AS FILED.' MY MISTAKE WAS SELECTING SXC17 IN THE FMC, WHICH OF COURSE WAS NOT THE SXC VOR, BUT RATHER A FIX E OF THE VOR WHICH IS ON THE DEP RTE. THE SXC VOR IS NOT ON THE DEP RTE OR IN THE FMC. AT THE SXC17 FIX WE TURNED DIRECT TO VTU. FORTUNATELY THE CTLR SAW US TURN TOWARD VTU AND TURNED US BACK TO THE W AND STOPPED OUR CLB AT 13500 FT MSL. WHEN THE CTLR TURNED US BACK TO THE W, THERE WAS A B747 CLBING OUT OF 14400 FT AT OUR 1 O'CLOCK POS AND AT LEAST 3 TO 4 MI AWAY. I DON'T BELIEVE WE CREATED A CONFLICT. WHY DID I SELECT SXC17 AND NOT ENTER SXC? I THINK I WAS TOO PREOCCUPIED WITH THE SNA NOISE ABATEMENT PROC AND JUST SAW SXC, NOT SXC17, AND SELECTED IT. I EVEN REMEMBER THINKING THERE ARE FIVE CHARACTERS, BUT IT DIDN'T REGISTER THAT THIS IS WRONG.
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.