The pilot of a C402 reported a rejected takeoff when a loss of engine power was observed.

Attributes
ACN	1338293
Time
Date	201603
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Daylight
Aircraft 1
Make Model Name	Cessna 402/402C/B379 Businessliner/Utiliner
Operating Under FAR Part	Part 135
Flight Phase	Takeoff
Flight Plan	IFR
Component
Aircraft Component	Engine
Person 1
Function	Pilot Flying Check Pilot
Qualification	Flight Crew Instrument Flight Crew Multiengine Flight Crew Flight Instructor Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

During the takeoff roll; as [the pilot monitoring] announced 80 kts; I felt and heard that we were losing power on one engine. I called for an abort; retarded the throttles to idle and assumed control of the aircraft. I suspect that it was the right engine; however I initiated the abort and power reduction before being able to positively identification the engine with reduced power. I notified the tower we would be returning to the north ramp. There were no defects noted on the taxi in; I entered a discrepancy in the [logbook] and contacted maintenance.

Original NASA ASRS Text

Title: The pilot of a C402 reported a rejected takeoff when a loss of engine power was observed.

Narrative: During the takeoff roll; as [the pilot monitoring] announced 80 Kts; I felt and heard that we were losing power on one engine. I called for an abort; retarded the throttles to idle and assumed control of the aircraft. I suspect that it was the right engine; however I initiated the abort and power reduction before being able to positively ID the engine with reduced power. I notified the tower we would be returning to the north ramp. There were no defects noted on the taxi in; I entered a discrepancy in the [logbook] and contacted maintenance.

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.