<< >> NASA ASRS Report 925325, December 2010

An ERJ170 autothrottle failed and the autopilot disconnected as the aircraft leveled at 5;000' resulting a distraction which allowed the aircraft to accelerate to 280 kts.

Attributes
ACN	925325
Time
Date	201012
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.TRACON
State Reference	US
Aircraft 1
Make Model Name	EMB ERJ 170/175 ER&LR
Operating Under FAR Part	Part 121
Flight Phase	Climb
Flight Plan	IFR
Component
Aircraft Component	Autothrottle/Speed Control
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Person 2
Function	Pilot Not Flying First Officer
Events
Anomaly	Aircraft Equipment Problem Critical Deviation - Speed All Types

Narrative:

On climb out we began to level off at 5000' as assigned. Simultaneously as we began to level off; we first got autothrottle fail and the autopilot disengaged. This was followed by aural caution and 'throttle throttle'. The throttles were split; one came back for the level off to maintain speed; and one did not. My main goal was to make sure the airplane leveled; we started to reach for QRH; silenced the warning. During this; ATC was issuing us a climb to a higher altitude. During this time the airspeed went to 280 and was then pulled back to 250 once things were silenced.

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Original NASA ASRS Text

Title: An ERJ170 autothrottle failed and the autopilot disconnected as the aircraft leveled at 5;000' resulting a distraction which allowed the aircraft to accelerate to 280 kts.

Narrative: On climb out we began to level off at 5000' as assigned. Simultaneously as we began to level off; we first got autothrottle fail and the autopilot disengaged. This was followed by aural caution and 'throttle throttle'. The throttles were split; one came back for the level off to maintain speed; and one did not. My main goal was to make sure the airplane leveled; we started to reach for QRH; silenced the warning. During this; ATC was issuing us a climb to a higher altitude. During this time the airspeed went to 280 and was then pulled back to 250 once things were silenced.

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.