<< >> NASA ASRS Report 943470, April 2011

A Q400 flight crew returned to their departure airport when the propeller pitch control appeared to malfunction.

Attributes
ACN	943470
Time
Date	201104
Local Time Of Day	0001-0600
Place
Locale Reference	ZZZ.Airport
State Reference	US
Aircraft 1
Make Model Name	Q400
Operating Under FAR Part	Part 121
Flight Phase	Takeoff
Flight Plan	IFR
Component
Aircraft Component	Propeller Pitch Change Mechanism
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Person 2
Function	Pilot Flying First Officer
Qualification	Flight Crew Commercial
Events
Anomaly	Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy

Narrative:

During departure when reducing the condition levers from 900 RPM to 850 RPM the propellers went to 1;060 RPM. I do not normally pull up on the condition levers when moving them in-flight however it was turbulent and I may have pulled them up. We returned to field for a normal landing. The propellers were in feather upon landing so we were towed back into the gate.

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Original NASA ASRS Text

Title: A Q400 flight crew returned to their departure airport when the propeller pitch control appeared to malfunction.

Narrative: During departure when reducing the condition levers from 900 RPM to 850 RPM the propellers went to 1;060 RPM. I do not normally pull up on the condition levers when moving them in-flight however it was turbulent and I may have pulled them up. We returned to field for a normal landing. The propellers were in feather upon landing so we were towed back into the gate.

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.