LAMP (P/N 311) - New Surplus

Part 311 is a miniature aircraft lamp with a BA15s single-contact base designed for 28-volt DC systems. This S11 bulb operates at approximately 36 watts and provides external lighting for wing and tail positions. The lamp installs in approved light assemblies following MS25235/MS25237 series specifications.

Replacement should follow your aircraft's maintenance manual and wiring diagram to ensure compatibility with existing electrical systems and light fixture design. Verify part compatibility with your aircraft's Illustrated Parts Catalog before installation.

What is the LAMP (P/N 311)?

Part 311 is a miniature aircraft lamp with a BA15s single-contact base designed for 28-volt DC systems. This S11 bulb operates at approximately 36 watts and provides external lighting for wing and tail positions.

Is the 311 a PMA or OEM part?

The LAMP 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 311 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 LAMP. We stock related hardware and can help identify companion parts.

Can the 311 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 311.