BULB (P/N 18-685) - New Surplus

The 18-685 is a miniature aircraft lighting bulb for instrument panel illumination. This compact lamp installs in panel-mounted sockets to provide backlighting for gauges, switches, and flight instruments. Follows MS25237 dimensional standards common to general aviation lighting systems.

The bulb operates at specified voltage per aircraft electrical configuration and requires socket compatibility verification in the aircraft's Illustrated Parts Catalog before installation. Used in cockpit and cabin lighting applications on piston and turboprop aircraft.

What is the BULB (P/N 18-685)?

The 18-685 is a miniature aircraft lighting bulb for instrument panel illumination. This compact lamp installs in panel-mounted sockets to provide backlighting for gauges, switches, and flight instruments.

Is the 18-685 a PMA or OEM part?

The BULB may be available as an OEM (Original Equipment Manufacturer) or PMA (Parts Manufacturer Approval) part depending on condition and source. Both carry FAA certification for airworthiness. Currently available in: New Surplus. Contact us for sourcing details.

Does the 18-685 include installation hardware?

Installation hardware requirements vary by application. Check your aircraft's Structural Repair Manual (SRM) or Illustrated Parts Catalog (IPC) for the complete installation kit requirements for the BULB. We stock related hardware and can help identify companion parts.

Can the 18-685 be shipped internationally?

Yes, we ship airframe components worldwide. International orders typically arrive within 3-14 business days depending on destination. Export documentation and customs forms are included. Contact us for international shipping quotes on the 18-685.