C414 pilot reports a loss of power in the right engine during a maintenance test flight for a newly ...

Attributes
ACN	1091523
Time
Date	201305
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Daylight
Aircraft 1
Make Model Name	Chancellor 414A / C414
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Route In Use	VFR Route
Flight Plan	VFR
Component
Aircraft Component	Propeller
Person 1
Function	Pilot Flying
Qualification	Flight Crew Commercial Flight Crew Instrument Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 60 Flight Crew Total 1270 Flight Crew Type 275
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

Departed [in the morning] on a clear VFR day. I was performing a maintenance check [flight] to break in a new left engine that had been installed on the aircraft. After leveling out at 8;500 feet and 10 miles from the airport the right engine started losing power; at this point I instantly turned back to the airport. I communicated to approach control that I was having a maintenance issue and needed to return to the field and was not declaring an emergency. Before the engine reached 2;000 rpm's the engine was shutdown in accordance with the emergency procedure checklist. Communicated approach control at this time I was single engine and still was not declaring an emergency; I landed the plane safely. Found oil coming out of the right engine cowling; the maintenance shop found the prop accumulator had blown open.

Original NASA ASRS Text

Title: C414 pilot reports a loss of power in the right engine during a maintenance test flight for a newly installed left engine. The engine is shut down and the flight returns to the departure airport.

Narrative: Departed [in the morning] on a clear VFR day. I was performing a maintenance check [flight] to break in a new left engine that had been installed on the aircraft. After leveling out at 8;500 feet and 10 miles from the airport the right engine started losing power; at this point I instantly turned back to the airport. I communicated to Approach Control that I was having a maintenance issue and needed to return to the field and was not declaring an emergency. Before the engine reached 2;000 rpm's the engine was shutdown in accordance with the emergency procedure checklist. Communicated Approach Control at this time I was single engine and still was not declaring an emergency; I landed the plane safely. Found oil coming out of the right engine cowling; the maintenance shop found the prop accumulator had blown open.

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.