Diesel Engine Replacement

Questions & Answers / Clarifications

This document provides responses to vendor questions regarding the RFI-FA4800-26-Q-0012 Diesel Engine Replacement opportunity.

• Engine Identification: The obsolete engine is a Hatz diesel engine, part number 89162-400, NSN 4920-01-614-3132, used for a Cabin Pressure Tester, not an air start cart.
• Quote Submission: Quotes can be supplied within 2 weeks of notification.
• Obsolete Engine Image: A picture of the obsolete engine is required to ensure all components are correctly oriented on the new engine. The Technical Order (TO) is attached for reference.
• Emissions: No specific EPA emissions tiers (Tier 1, 2, etc.) are required for replacement engines. Replacement engines can be of equal or greater tier, with criteria based on equipment age (less than 40 years if mobile, less than 15 years if stationary, per 40 CFR 1068.240).
• Manufacturer: Hydraulics International Inc. makes the Cabin Pressure Tester (CPT).
• Furlough Contacts: Alternate points of contact for a furlough situation are provided (SrA Craig Gooden and AIC Nicholas Sherburne).

This Q&A clarifies key details about the engine and equipment, which may impact vendor understanding of requirements and proposal preparation. It also provides contact information for specific scenarios.

Statement of Work (SOW) / Performance Work Statement (PWS)

This document outlines the requirements for a new diesel engine to support the Aerospace Ground Equipment Flight of the 1st Maintenance Squadron. The need arises due to the obsolescence of the current engine, with no direct replacement available.

• Procurement of one (1) diesel engine.
• The engine must meet the following specifications:
  • Number of Cylinders: 4
  • Bore/Stroke: 102/105
  • Displacement: 3432
  • Compression Ratio: 18:1
  • Ignition Order: 1-3-4-2
  • Direction of Rotation: Anticlockwise / Flywheel Side
  • Cooling Air Required at 3000 RPM: 49
  • Combust Air Required at 300 RPM: 5.2
  • Net Weight: 316.336kg
  • Digital Panel Voltmeter: 0-300VDC
  • Digital Panel Ammeter: 0-300A
  • Load channel switches: Channel 1 to 6: Amber illuminated IP65 rocker switches
  • Mains switch: Green illuminated IP65 rocker switch
  • LED indicators: Over Temperature, 28V Circuit enabled
  • 28V switch: 2 position rotary switch
  • Green Start button: Latching enabling of control circuit
  • Red Stop button: De-energizes control circuit

Not specified in the document.

Not specified in the document, beyond the detailed technical specifications.

Request for Information (RFI)

This RFI is issued by the 633rd Contracting Squadron at Langley Air Force Base to conduct market research for the replacement of an obsolete diesel engine essential to the Aerospace Group Equipment Flight of the 1st Maintenance Squadron. The goal is to gather industry feedback to determine the availability of qualified sources and inform the acquisition strategy. This is not a solicitation, and no contract awards will be made from this notice.

• Feedback is requested on the draft Statement of Work (Attachment 1).

• Information is sought regarding the sufficiency of a two-week timeframe for quote submission.

• Any other relevant information for providing a quote for this potential requirement.

• Not applicable, as this is a market research RFI, not a solicitation.

• Responses are due by 30 January 2026, 5:00 PM EST.

• Responses must be submitted as an attachment via email to the Points of Contact listed.

• Only electronic responses will be accepted.

• Responses are voluntary and will not be considered offers.

• Not applicable at this RFI stage.

• The NAICS Code is 333618 - Other Engine Equipment Manufacturing.

• All costs associated with responding are at the respondent's expense.

• Responses will be used for internal Air Force decision-making and will not be disclosed outside the agency.