PMA
- Parts Manufacturer Approval
- Parts Manufacturer Approval (PMA) is a Federal Aviation Administration (FAA) approval that allows a manufacturer to produce replacement parts for aircraft and related products. It is an alternative to the traditional design and production approval process, which typically involves the original equipment manufacturer (OEM).
- Permanent Magnet Alternator
- A Permanent Magnet Alternator (PMA) is a type of electrical generator that uses a permanent magnet as the rotor, which rotates within a stator coil to produce an alternating current (AC) output. The permanent magnet eliminates the need for an external power source to generate the magnetic field, making the system more efficient and reliable.