R AIR CONDITIONING (P/N SB550-21-58) - New Surplus

Service Bulletin SB550-21-58 addresses pressurization system plumbing improvements for Cessna Citation Model 550 (Citation II) aircraft. This bulletin item specifies modifications to the air conditioning and pressurization system (ATA 21) plumbing configuration. Maintenance teams implement this service bulletin to enhance environmental control system reliability and performance.

Installation requires following the specific procedures outlined in Service Bulletin 550-21-58 and cross-referencing applicable aircraft maintenance manuals. Verify part compatibility with your aircraft's Illustrated Parts Catalog before installation.

What is the R AIR CONDITIONING (P/N SB550-21-58)?

Service Bulletin SB550-21-58 addresses pressurization system plumbing improvements for Cessna Citation Model 550 (Citation II) aircraft. This bulletin item specifies modifications to the air conditioning and pressurization system (ATA 21) plumbing configuration.

Is the SB550-21-58 a PMA or OEM part?

The R AIR CONDITIONING 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 SB550-21-58 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 R AIR CONDITIONING. We stock related hardware and can help identify companion parts.

Can the SB550-21-58 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 SB550-21-58.