JA 25-0289 Addendum REDACTED (0345 H-53K Depot Level PSE Follow On-Rhinestahl).pdf

DEPARTMENT OF THE NAVY

NAVAL AIR WARFARE CENTER AIRCRAFT DIVISION LAKEHURST

ROUTE 547

JOINT BASE MDL NEW JERSEY 08733

IN REPLY REFER TO:

J&A 25-0289

ADDENDUM TO JUSTIFICATION AND APPROVAL (J&A) 25-0289

J&A 25-0289, approved on 4 November 2025, authorized a sole source contract to Rhinestahl Corp.

(Rhinesthal), CAGE 5QE71, for Peculiar Support Equipment (PSE) end items for the T408-GE-400 engine on the CH-53K aircraft.

In accordance with FAR 5.201, a Request for Information/Sources Sought Announcement was posted on

SAM.gov on 5 June 2025, and closed on 13 June 2025. The announcement closed with one inquiry received from and determined to be unacceptable due to lack of supporting documentation for evaluation.

The proposed effort was also synopsized on SAM.gov on 13 June 2025 until 7 July 2025. No responses were received.

The referenced J&A was approved at a total dollar value of with a list of parts that are unique to the

T408-GE-400 engine and allow for the depot maintenance of the T408-GE-400 engine. Request For

Proposal (RFP) N68335-26-R-0454 was issued to Rhinestahl on 5 November 2025. Rhinestahl submitted a proposal on 29 May 2026 in the amount of $ . A discrepancy was found in the proposal and a corrected version was submitted to the Government in the amount of $ on 1 July

2026. The Specialist evaluated the significant price difference between the proposed price and the estimated value reflected in the initial J&A. Through further review of the proposal and discussions with the Rhinestahl Point of Contracts Representative, it was determined that the discrepancy was due to three main factors:

3. Significant difference in the quantities to be procured of many of the part numbers for this effort between the initial T-408 Depot PSE effort and this follow-on requirement. The initial T408 Depot PSE effort was used as the basis for developing the Independent

Government Estimate and therefore the estimated J&A threshold; however, when developing the IGE, the team failed to take into consideration that many of the previously procured part numbers were purchased at high quantities under the predecessor contract while the current effort is only purchasing those same items in quantities of one (1) or two (2). The significant reduction in quantities results in a much lower learning curve and loss of a economies of scale discount that had applied to the initial effort.

An initial price analysis was conducted by

, and removing a learning curve discount as applicable to the lower-quantity part numbers. The analysis showed that the proposed price is fair and reasonable, and accordingly the Government will move forward with the effort as proposed. The J&A is hereby amended to increase the threshold of the procurement to

J&A 25-0289 was approved pursuant to the statutory authority of 10 USC 3204(a)(l), “Only one responsible source and no other supplies or services will satisfy agency requirements.” Beyond the increased threshold, the remaining facts and supporting rationale in J&A 25-0289 remain unchanged.

J&A 23-0145

CERTIFICATIONS AND APPROVAL FOR

ADDENDUM TO JUSTIFICATION AND APPROVAL 23-0145

FOR USE OF OTHER THAN FULL AND OPEN COMPETITION

TECHNICAL/REQUIREMENTS CERTIFICATION

I certify that the facts and representations under my cognizance which are included in this Justification and its supporting acquisition planning documents, except as noted herein are complete and accurate to the best of my knowledge and belief.

Technical Cognizance:

Date

CH-53K Engineering

Requirements Cognizance:

CH-53K SE Program Officer

LEGAL SUFFICIENCY REVIEW

I have determined this Justification is legally sufficient.

NAWCAD Lakehurst Office of General Counsel

CONTRACTING OFFICER CERTIFICATION

I certify that this Justification is accurate and complete to the best of my knowledge and belief.

Procuring Contracting Officer

NAWC-AD Lakehurst Procurement Department

J&A 23-0145

APPROVAL

Upon the basis of the above justification, I hereby approve the solicitation of the proposed procurement(s) described herein using other than full and open competition, pursuant to the authority of 10 U.S.C. 3204(a)(1) Only one responsible source and no other supplies or services will satisfy agency requirements.

Procuring Activity Competition Advocate (PACA)

NAWC-AD LKE Procurement Department