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The temporary loss of the ILS signal as their B767-300 was intercepting the localizer led to an unstabilized approach; a go around and an altitude overshoot.
| Attributes | |
| ACN | 906884 |
| Time | |
| Date | 201008 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | ANC.Airport |
| State Reference | AK |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | B767-300 and 300 ER |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Climb |
| Route In Use | Other Controlled |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | ILS/VOR |
| Person 1 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 75 Flight Crew Total 13000 Flight Crew Type 7000 |
| Person 2 | |
| Function | First Officer Pilot Not Flying |
| Experience | Flight Crew Last 90 Days 90 Flight Crew Total 4000 Flight Crew Type 900 |
| Events | |
| Anomaly | ATC Issue All Types Aircraft Equipment Problem Less Severe Deviation - Altitude Overshoot Deviation - Procedural Clearance Deviation - Speed All Types Inflight Event / Encounter Unstabilized Approach |
Narrative:
While intercepting the ILS to 7L at 1600 ft MSL we appeared to momentarily lose the localizer signal. Since we were prior to the FAF and stable we asked for a quick vector to re-intercept the localizer. We were given a vector 5 degrees left to intercept. The localizer appeared to return however we were not in a good position to make the approach. As we were preparing to go-around; the tower directed us to discontinue the approach; climb to 2;000; and turn right heading 180. There was confusion about the initial clearance. However; I immediately initiated the go-around by pushing the go around switches and calling for flaps 20. Our workload dramatically increased. We determined the clearance was to 2;000 and not the published go-around altitude of 2;500. We over shot our altitude by approximately 800 ft. Tower re-cleared us to 2;000 and we continued the rest of the maneuver uneventfully.
Original NASA ASRS Text
Title: The temporary loss of the ILS signal as their B767-300 was intercepting the localizer led to an unstabilized approach; a go around and an altitude overshoot.
Narrative: While intercepting the ILS to 7L at 1600 FT MSL we appeared to momentarily lose the localizer signal. Since we were prior to the FAF and stable we asked for a quick vector to re-intercept the localizer. We were given a vector 5 degrees left to intercept. The localizer appeared to return however we were not in a good position to make the approach. As we were preparing to go-around; the Tower directed us to discontinue the approach; climb to 2;000; and turn right heading 180. There was confusion about the initial clearance. However; I immediately initiated the go-around by pushing the go around switches and calling for flaps 20. Our workload dramatically increased. We determined the clearance was to 2;000 and not the published go-around altitude of 2;500. We over shot our altitude by approximately 800 FT. Tower re-cleared us to 2;000 and we continued the rest of the maneuver uneventfully.
Data retrieved from NASA's ASRS site as of April 2012 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.