PULSE GENERATOR ASSEMBLY (P/N a-4478) - As Removed

The a-4478 is a pulse generator assembly that converts shaft rotation into frequency signals for aircraft alternator and generator systems. It provides speed-proportional output to engine tachometers and avionics displays on 14/28 VDC electrical systems. The assembly mounts directly to the generator or alternator shaft, generating pulses that indicate engine RPM in real time.

Installation requires verification against the aircraft's Illustrated Parts Catalog and adherence to the maintenance manual wiring diagram specifications. Essential for accurate engine speed indication in cockpit instrumentation.

What is the PULSE GENERATOR ASSEMBLY (P/N a-4478)?

The a-4478 is a pulse generator assembly that converts shaft rotation into frequency signals for aircraft alternator and generator systems. It provides speed-proportional output to engine tachometers and avionics displays on 14/28 VDC electrical systems.

What certifications or documentation come with the a-4478?

Depending on condition, the a-4478 may include an FAA 8130-3 Airworthiness Approval Tag, a yellow serviceable tag, or manufacturer documentation. Currently available in: As Removed. Contact us for specific documentation details on the condition you need.

Can I use the a-4478 during an engine overhaul or annual inspection?

Yes, the PULSE GENERATOR ASSEMBLY can be used in engine overhauls and maintenance events. Always verify part compatibility against your engine's Type Certificate Data Sheet (TCDS) and Illustrated Parts Catalog (IPC) before installation.

What is the lead time for the a-4478?

In-stock items ship same business day when ordered before 3 PM EST. We also offer 24/7 AOG (Aircraft on Ground) support at (904) 998-9101 for urgent engine part needs.