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A300 captain reports inability to control airspeed/thrust via MCP during approach. Vectors off the approach course are requested and after several minutes MCP operation returns to normal.
| Attributes | |
| ACN | 1089954 |
| Time | |
| Date | 201305 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | ZZZ.TRACON |
| State Reference | US |
| Aircraft 1 | |
| Make Model Name | A300 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Approach |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Autothrottle/Speed Control |
| Person 1 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe |
Narrative:
Airspeed on final was locked in at 250 knots; could not move the speed/mach control knob from 250 preselected to 170 and aircraft never slowed after alt* or glide slope * [altitude or glideslope capture]. Decided to do a left 360 east of the runway and tried to slow manually. Speed control came back after about 3 minutes; normal operations and landing followed.
Original NASA ASRS Text
Title: A300 Captain reports inability to control airspeed/thrust via MCP during approach. Vectors off the approach course are requested and after several minutes MCP operation returns to normal.
Narrative: Airspeed on final was locked in at 250 knots; could not move the speed/mach control knob from 250 preselected to 170 and aircraft never slowed after Alt* or glide slope * [altitude or glideslope capture]. Decided to do a left 360 east of the runway and tried to slow manually. Speed control came back after about 3 minutes; normal operations and landing followed.
Data retrieved from NASA's ASRS site as of July 2013 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.