# SAM #FA8538-C5_CDG_RA_Overhaul

Market research for qualification and overhaul of C-5 door gearbox and rotor actuator

**Buyer:** Air Force Security Forces Center (AFSFC)
**Posted:** November 06, 2026
**Respond By:** December 07, 2026
**Identifier:** FA8538-C5_CDG_RA_Overhaul
**NAICS:** 336413

The U.S. Air Force is conducting market research to identify sources that can qualify and overhaul C-5 door-operating equipment.
- Government buyer: Department of the Air Force, Air Force Materiel Command, Air Force Sustainment Center, office FA8538 AFSC PZAAB.
- OEM: **Honeywell** designed the Center Door Gearbox and Rotor Actuator.
- Equipment associated with each C-5 aircraft:
  - Center Door Gearbox (CDG): 1 installed; P/N 544996-3-1; NSN 1680-00-026-4424UC.
  - Rotor Actuator: 2 installed; P/N 544948-2-1; NSN 1680-00-024-6953UC.
- Requested capability: qualification and overhaul, including repair, testing, quality controls, capacity, and manufacturing capability.
- This is a sources-sought market survey, not an award or a stated purchase quantity. No other vendors are named.

### Description

<p>This market survey is being conducted to identify potential sources that may possess the expertise, capabilities, and experience to meet the requirements for qualification and overhaul of the C-5 Center Door Gearbox (CDG) and Rotar Actuator for use by United States Air Force (USAF) personnel. The level of security clearance and amount of foreign participation in this requirement has not been determined. Contractors and Institutions responding to this market research are placed on notice that participation in this survey may not ensure participation in future solicitations or contract awards. The government will not reimburse participants for any expenses associated with their participation in this survey.</p>

<p>See attached &quot;Sources Sought Synopsis&quot; for complete description, instructions and survey.</p>

[View original listing](https://sam.gov/opp/c3bffd6797674dc49dffaabc8699e0b5/view)