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A B737-200 is vectored away from the final approach course to runway 14 at anc when the flight they were following does not turn onto the final approach as expected.
| Attributes | |
| ACN | 437920 |
| Time | |
| Date | 199905 |
| Day | Tue |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : anc.airport |
| State Reference | AK |
| Altitude | msl single value : 3000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : a11.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B737-200 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | ils localizer only : 14 |
| Flight Phase | descent : approach descent : intermediate altitude |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tower : anc.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B737-400 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach descent : intermediate altitude |
| Route In Use | approach : traffic pattern |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : multi engine |
| Experience | flight time last 90 days : 270 flight time total : 5000 flight time type : 1500 |
| ASRS Report | 437920 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : clearance non adherence : published procedure other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance controller : separated traffic |
| Miss Distance | horizontal : 10000 vertical : 500 |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Airspace Structure ATC Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Intra Facility Coordination Failure Pilot Deviation |
Narrative:
Flight barrow to anchorage. We were cleared for a visual approach to runway 14 and told to follow 11 O'clock position traffic. We assumed the traffic was to fly a left base to final for runway 14. Approach informed us we had 6 mi separation. We proceeded assuming no delay. At 8 mi out we spotted traffic at our 2 O'clock position. We followed tower instruction to turn right to 350 degree heading. We should have been more aware of the intended flight path of our traffic. We should have visually verified it. Tower and approach should have informed us of our traffic's intended flight path.
Original NASA ASRS Text
Title: A B737-200 IS VECTORED AWAY FROM THE FINAL APCH COURSE TO RWY 14 AT ANC WHEN THE FLT THEY WERE FOLLOWING DOES NOT TURN ONTO THE FINAL APCH AS EXPECTED.
Narrative: FLT BARROW TO ANCHORAGE. WE WERE CLRED FOR A VISUAL APCH TO RWY 14 AND TOLD TO FOLLOW 11 O'CLOCK POS TFC. WE ASSUMED THE TFC WAS TO FLY A L BASE TO FINAL FOR RWY 14. APCH INFORMED US WE HAD 6 MI SEPARATION. WE PROCEEDED ASSUMING NO DELAY. AT 8 MI OUT WE SPOTTED TFC AT OUR 2 O'CLOCK POS. WE FOLLOWED TWR INSTRUCTION TO TURN R TO 350 DEG HDG. WE SHOULD HAVE BEEN MORE AWARE OF THE INTENDED FLT PATH OF OUR TFC. WE SHOULD HAVE VISUALLY VERIFIED IT. TWR AND APCH SHOULD HAVE INFORMED US OF OUR TFC'S INTENDED FLT PATH.
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.