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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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| Attributes | |
| ACN | 914396 |
| Time | |
| Date | 201010 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.ARTCC |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | MD-83 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Climb |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | FCU (Flight Control Unit) |
| Person 1 | |
| Function | Pilot Flying First Officer |
| Person 2 | |
| Function | Pilot Not Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Deviation - Procedural Published Material / Policy Deviation - Speed All Types |
Narrative:
Climbing through about FL260 speed slow light flickered on FMA; I clicked off autopilot and leveled aircraft noticed airspeed approaching 220 with engines normal; vertical velocity indicated 2700 when I clicked off autopilot. Had put autopilot on above 10;000 with speed select set to 300kts. At first could not understand what happened; but I believe at around 17000' when ATC cleared us to higher altitude I had used the vertical speed to continue climb and not confirmed that I had gone back to speed select. This let the aircraft climb at vertical speed instead of at a set speed. I did not confirm I had set speed select for the autopilot ;and to compound the error did not monitor the instruments and mode selected for the a/c.
Original NASA ASRS Text
Title: An MD80 crew reported that during climb out the First Officer allowed the aircraft to accelerate to 300 kts with a 250 kt restriction. The Speed Select mode was changed to Vertical Speed to slow the aircraft and at FL260 a low speed alert sounded.
Narrative: Climbing through about FL260 speed slow light flickered on FMA; I clicked off autopilot and leveled aircraft noticed airspeed approaching 220 with engines normal; vertical velocity indicated 2700 when I clicked off autopilot. Had put autopilot on above 10;000 with speed select set to 300kts. At first could not understand what happened; but I believe at around 17000' when ATC cleared us to higher altitude I had used the vertical speed to continue climb and not confirmed that I had gone back to speed select. This let the aircraft climb at vertical speed instead of at a set speed. I did not confirm I had set speed select for the autopilot ;and to compound the error did not monitor the instruments and mode selected for the a/c.
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.