The Prestolite HYC5005 CORE is a core return unit (non-serviceable exchange core) of a 12V electric hydraulic power pack assembly used in aircraft systems, typically for landing gear hydraulic actuation in general aviation aircraft (commonly Piper applications).

This unit consists of the same base components as a complete HYC5005 power pack—electric motor, hydraulic pump, and reservoir assembly—but is supplied as a core unit requiring overhaul or exchange credit. It is not considered airworthy in its current condition and is intended for return to a repair/overhaul facility or exchange program.

The HYC5005 system converts electrical energy into hydraulic pressure, supplying fluid power to aircraft systems such as landing gear extension/retraction mechanisms. In core condition, the unit typically serves as a rebuildable base for overhaul shops.

Key features include:

Prestolite part number: HYC5005 CORE
12V DC electric hydraulic power pack (core unit)
Includes motor, pump, and reservoir assembly (as-core condition)
Used in aircraft landing gear hydraulic systems
Common application in Piper aircraft systems
Requires overhaul or exchange before airworthiness
Not serviceable / not airworthy in current state
Returned for rebuild or core credit program
Converts electrical power into hydraulic pressure
Designed for GA aircraft hydraulic system operation
Standard rotable component in aviation maintenance exchange systems