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B757 flight crew inserted different runway into FMC without selecting STAR. Flight crew was navigating with LNAV selected; but no longer flying the assigned arrival route.
| Attributes | |
| ACN | 756543 |
| Time | |
| Date | 200710 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : msp.airport |
| State Reference | MN |
| Altitude | msl single value : 10000 |
| Aircraft 1 | |
| Controlling Facilities | tracon : msp.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Experience | flight time last 90 days : 88 flight time total : 9000 flight time type : 450 |
| ASRS Report | 756543 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | non adherence : clearance non adherence : published procedure other spatial deviation |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | controller : issued new clearance |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
Narrative:
Aircraft in LNAV. We were given new runway assign. Captain put runway 17 in FMC. Caused STAR to drop out. Aircraft continued straight ahead but continued to show LNAV engaged with no msgs on FMC. Once we realized we were not going direct to the VOR the captain fessed up to ATC. They said 'ya I've been watching you now for a while just turn to 320 degrees heading' (about 10 degree from current heading). No further incidents on the approach.
Original NASA ASRS Text
Title: B757 FLT CREW INSERTED DIFFERENT RWY INTO FMC WITHOUT SELECTING STAR. FLT CREW WAS NAVIGATING WITH LNAV SELECTED; BUT NO LONGER FLYING THE ASSIGNED ARR RTE.
Narrative: ACFT IN LNAV. WE WERE GIVEN NEW RWY ASSIGN. CAPT PUT RWY 17 IN FMC. CAUSED STAR TO DROP OUT. ACFT CONTINUED STRAIGHT AHEAD BUT CONTINUED TO SHOW LNAV ENGAGED WITH NO MSGS ON FMC. ONCE WE REALIZED WE WERE NOT GOING DIRECT TO THE VOR THE CAPT FESSED UP TO ATC. THEY SAID 'YA I'VE BEEN WATCHING YOU NOW FOR A WHILE JUST TURN TO 320 DEGS HDG' (ABOUT 10 DEG FROM CURRENT HDG). NO FURTHER INCIDENTS ON THE APCH.
Data retrieved from NASA's ASRS site as of January 2009 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.