BULB (P/N 28433) - New Surplus

Part 28433 is a miniature aircraft lighting bulb for cockpit instrument panels and certified assemblies. This lamp provides illumination for flight instruments, gauges, and control panel displays in general aviation and commercial aircraft. The bulb conforms to military standard MS25237 specifications for aviation lighting applications.

Installation requires placement only in approved light assemblies per the aircraft maintenance manual. Verify the exact bulb designation in the Illustrated Parts Catalog before replacement to ensure compatibility with your specific aircraft system.

What is the BULB (P/N 28433)?

Part 28433 is a miniature aircraft lighting bulb for cockpit instrument panels and certified assemblies. This lamp provides illumination for flight instruments, gauges, and control panel displays in general aviation and commercial aircraft.

Is the 28433 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 28433 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 28433 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 28433.