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HS125 flight crew new to the aircraft; report getting well to the left of the localizer before realizing a mistake in mode selection on the MCP.
| Attributes | |
| ACN | 1159855 |
| Time | |
| Date | 201403 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | BFI.Airport |
| State Reference | WA |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | BAe 125 Series 800 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Initial Approach |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | MCP |
| Person 1 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Instrument Flight Crew Air Transport Pilot (ATP) Flight Crew Flight Instructor Flight Crew Multiengine |
| Experience | Flight Crew Last 90 Days 36 Flight Crew Total 9500 Flight Crew Type 36 |
| Person 2 | |
| Function | First Officer Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 36 Flight Crew Total 5500 Flight Crew Type 36 |
| Events | |
| Anomaly | Deviation - Procedural Clearance Deviation - Track / Heading All Types |
Narrative:
After being vectored to intercept the final approach course to the ILS 13R at seattle boeing field; and having selected from a navigation intercept to what we believed to have been the approach mode; the aircraft began a left turn to rejoin the heading bug which was still in the ATC-assigned intercept vector position. Because of this the aircraft achieved an almost full-scale deflection off course to the left; which we immediately took action to remedy. Due to the 30-40 knot crosswind from the right; the 30 degree (re) intercept vector we established did not correct the deflection very quickly; and ATC advised we showed '1/4 mile' left of course. We advised we we're 'correcting' and no further discussions occurred. The result was a stabilized approach to an uneventful landing. Since 'simultaneous approaches' we 'in effect' to seatac; this could potentially have resulted in a TA/RA or similar to aircraft approaching sea. There were none that we heard about. I submit this ASRS report to highlight this crew's lack of seat-time in type and the obvious impact this can have on automation management; with the intention of adding some data to that area of research. This was a clear miss-selection of navigation mode; accompanied by a delayed realization and identification of the mistake. This resulted in a good learning experience; but could also have resulted in a traffic conflict.
Original NASA ASRS Text
Title: HS125 flight crew new to the aircraft; report getting well to the left of the localizer before realizing a mistake in mode selection on the MCP.
Narrative: After being vectored to intercept the final approach course to the ILS 13R at Seattle Boeing Field; and having selected from a NAV intercept to what we believed to have been the approach mode; the aircraft began a left turn to rejoin the heading bug which was still in the ATC-assigned intercept vector position. Because of this the aircraft achieved an almost full-scale deflection off course to the left; which we immediately took action to remedy. Due to the 30-40 knot crosswind from the right; the 30 degree (re) intercept vector we established did not correct the deflection very quickly; and ATC advised we showed '1/4 mile' left of course. We advised we we're 'correcting' and no further discussions occurred. The result was a stabilized approach to an uneventful landing. Since 'Simultaneous Approaches' we 'in effect' to SeaTac; this could potentially have resulted in a TA/RA or similar to aircraft approaching SEA. There were none that we heard about. I submit this ASRS report to highlight this crew's lack of seat-time in type and the obvious impact this can have on automation management; with the intention of adding some data to that area of research. This was a clear miss-selection of navigation mode; accompanied by a delayed realization and identification of the mistake. This resulted in a good learning experience; but could also have resulted in a traffic conflict.
Data retrieved from NASA's ASRS site 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.