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A B737-300 crew reports an ILS change after radio set up caused the aircraft to fly through the ILS to an RA before the localizer was captured.
| Attributes | |
| ACN | 748560 |
| Time | |
| Date | 200708 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : zzz.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | ils localizer only : 18r + 17l |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Experience | flight time last 90 days : 181 flight time type : 4000 |
| ASRS Report | 748560 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : clearance other spatial deviation |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : exited adverse environment flight crew : regained aircraft control flight crew : returned to original clearance |
| Supplementary | |
| Problem Areas | ATC Human Performance Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
Narrative:
We were flying to ZZZ. I was the PNF and the first officer was the PF. ZZZ approach control told us to expect ILS runway 17L; then they changed our runway to expect ILS runway 18R. In the process of switching localizer frequencies and approach charts; we inadvertently flew through the runway 18R final approach course. There was an aircraft approaching final to runway 17L at this point. We did not get an RA and I later asked tower if there was any separation loss and they replied no. In the future; I will be much quicker about switching localizer frequencies and maintaining situational awareness. Always maintain situational awareness and anticipate approach and runway changes.
Original NASA ASRS Text
Title: A B737-300 CREW RPTS AN ILS CHANGE AFTER RADIO SET UP CAUSED THE ACFT TO FLY THROUGH THE ILS TO AN RA BEFORE THE LOC WAS CAPTURED.
Narrative: WE WERE FLYING TO ZZZ. I WAS THE PNF AND THE FO WAS THE PF. ZZZ APCH CTL TOLD US TO EXPECT ILS RWY 17L; THEN THEY CHANGED OUR RWY TO EXPECT ILS RWY 18R. IN THE PROCESS OF SWITCHING LOC FREQUENCIES AND APCH CHARTS; WE INADVERTENTLY FLEW THROUGH THE RWY 18R FINAL APCH COURSE. THERE WAS AN ACFT APCHING FINAL TO RWY 17L AT THIS POINT. WE DID NOT GET AN RA AND I LATER ASKED TOWER IF THERE WAS ANY SEPARATION LOSS AND THEY REPLIED NO. IN THE FUTURE; I WILL BE MUCH QUICKER ABOUT SWITCHING LOC FREQUENCIES AND MAINTAINING SITUATIONAL AWARENESS. ALWAYS MAINTAIN SITUATIONAL AWARENESS AND ANTICIPATE APCH AND RWY CHANGES.
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.