BULB (P/N 1864) - New Surplus, New

Part 1864 is a miniature incandescent indicator bulb with a BA9s bayonet base designed for 28-volt aircraft electrical systems. This bulb provides illumination for cockpit instrument panels, annunciators, and backlighting circuits in maintenance and retrofit applications. The compact form factor fits standard aircraft panel fixtures and indicator housings.

Installation requires matching the bulb's base type and voltage rating to the aircraft maintenance manual and Illustrated Parts Catalog specifications to ensure proper fit and electrical compatibility.

What is the BULB (P/N 1864)?

Part 1864 is a miniature incandescent indicator bulb with a BA9s bayonet base designed for 28-volt aircraft electrical systems. This bulb provides illumination for cockpit instrument panels, annunciators, and backlighting circuits in maintenance and retrofit applications.

Is the 1864 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, New. Contact us for sourcing details.

Does the 1864 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 1864 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 1864.