BULB (P/N a300) - New Surplus

The a300 is a miniature aircraft lighting bulb for 14/28-VDC instrument panel circuits. This bulb illuminates instrument displays, gauges, and control panel indicators during night operations. Standardized under MS25237 specifications, it features a precision base type compatible with standard aircraft lamp sockets.

Install per aircraft maintenance manual, verifying voltage compatibility and base configuration before replacement. Night lighting must comply with 14 CFR 91.205 and 91.209 requirements.

What is the BULB (P/N a300)?

The a300 is a miniature aircraft lighting bulb for 14/28-VDC instrument panel circuits. This bulb illuminates instrument displays, gauges, and control panel indicators during night operations.

Is the a300 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 a300 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 a300 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 a300.