HEATER (P/N 4-66) - New Surplus

The 4-66 is an aircraft heater component within the environmental control system that supplies heated air for cabin climate management. This unit integrates into cabin heating circuits to maintain passenger and crew comfort during flight operations. Installation follows the aircraft maintenance manual and FAA AC 43.13-1B guidance, with configuration and capacity varying by aircraft model and Illustrated Parts Catalog specifications.

Verify compatibility with your specific aircraft before replacement to ensure proper system integration and airworthiness compliance.

What is the HEATER (P/N 4-66)?

The 4-66 is an aircraft heater component within the environmental control system that supplies heated air for cabin climate management. This unit integrates into cabin heating circuits to maintain passenger and crew comfort during flight operations.

Is the 4-66 a PMA or OEM part?

The HEATER 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 4-66 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 HEATER. We stock related hardware and can help identify companion parts.

Can the 4-66 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 4-66.