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            37000 Feet | Browse and search NASA's Aviation Safety Reporting System  | 
            
                
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| Attributes | |
| ACN | 1759647 | 
| Time | |
| Date | 202009 | 
| Local Time Of Day | 0601-1200 | 
| Place | |
| Locale Reference | ZZZ.TRACON | 
| State Reference | US | 
| Aircraft 1 | |
| Make Model Name | Commercial Fixed Wing | 
| Operating Under FAR Part | Part 121 | 
| Flight Phase | Initial Approach | 
| Flight Plan | IFR | 
| Person 1 | |
| Function | Pilot Flying First Officer  | 
| Qualification | Flight Crew Multiengine Flight Crew Instrument Flight Crew Air Transport Pilot (ATP)  | 
| Person 2 | |
| Function | Pilot Not Flying Captain  | 
| Qualification | Flight Crew Multiengine Flight Crew Instrument Flight Crew Air Transport Pilot (ATP)  | 
| Events | |
| Anomaly | Deviation - Procedural FAR Deviation - Procedural Published Material / Policy Deviation - Speed All Types  | 
Narrative:
This incident occurred during the approach phase of the second leg of the flight. I was the pilot flying from the right seat. We were instructed by ATC to hold 10;000 feet and I had selected 265 knots for the speed. When ATC gave us a lower altitude; I selected the lower altitude on the MCP and set the speed to 250 knots. As my attention was directed to the speed window on the MCP; the pilot monitoring alerted me that we were descending below 10;000 feet with the speed greater than 250 knots. I immediately selected altitude hld and allowed the speed to slow to 250 knots before continuing the descent. Our altitude was no lower than 9;800 above 250 knots and the speed was less than 265; but above 250 knots between 9;800 and 10;000 feet.I should have slowed the aircraft prior to the descent. One of the contributing factors was I had been on reserve duty during the previous month and had operated only one flight during the entire month and the only other flight prior to this one was in a different variant of the aircraft. Nevertheless; I should have mitigated the lack of recency of experience in the seat by having slowed the aircraft to 250 knots while we were level at 10;000 feet as I was expecting ATC clearance for a lower altitude. Or I should have mentally prepared to slow the aircraft prior to descending.
Original NASA ASRS Text
Title: Air carrier flight crew reported going over 250 knots below 10;000 feet. Pilot flying made reference to lack of flying as a contributing factor.
Narrative: This incident occurred during the approach phase of the second leg of the flight. I was the pilot flying from the right seat. We were instructed by ATC to hold 10;000 feet and I had selected 265 knots for the speed. When ATC gave us a lower altitude; I selected the lower altitude on the MCP and set the speed to 250 knots. As my attention was directed to the speed window on the MCP; the Pilot Monitoring alerted me that we were descending below 10;000 feet with the speed greater than 250 knots. I immediately selected ALT HLD and allowed the speed to slow to 250 knots before continuing the descent. Our altitude was no lower than 9;800 above 250 knots and the speed was less than 265; but above 250 knots between 9;800 and 10;000 feet.I should have slowed the aircraft prior to the descent. One of the contributing factors was I had been on reserve duty during the previous month and had operated only one flight during the entire month and the only other flight prior to this one was in a different variant of the aircraft. Nevertheless; I should have mitigated the lack of recency of experience in the seat by having slowed the aircraft to 250 knots while we were level at 10;000 feet as I was expecting ATC clearance for a lower altitude. Or I should have mentally prepared to slow the aircraft prior to descending.
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.