AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

1. CONTRACT ID CODE

5. PROJECT NO. (If applicable)2. AMENDMENT/MODIFICATION NO. 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQ.NO.

PAGE OF PAGES

6. ISSUED BY CODE 7. ADMINISTERED BY (If other than Item 6)

8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP Code)

CODE

9A. AMENDMENT OF SOLICITATION NO.

9B. DATED (SEE ITEM 11)

10A. MODIFICATION OF CONTRACT/ORDER NO.

10B. DATED (SEE ITEM 13)

CODE FACILITY CODE

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers

Offers must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended , by one of the following methods: (a) By completing

Items 8 and 15, and returning is extended, is not extended.

12. ACCOUNTING AND APPROPRIATION DATA (If required.)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS. IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

(x) A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE CONTRACT

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO THE AUTHORITY OF:

D. OTHER (Specify type of modification and authority) appropriation date, etc.) SET FORTH IN ITEM 14.

E. IMPORTANT: Contractor is not, is required to sign this document and return

ORDER NO. IN ITEM 10A.

1 3

0001 05/18/2026

FEDERAL AVIATION ADMINISTRATION

AAQ-500 - REGIONAL ACQUISITIONS

10101 HILLWOOD PARKWAY

FORT WORTH TX 76177-1524

AAQ520FTW-AFN

x

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

separate letter or telegram which includes a reference to the solicitation and amendment number. FAILURE OF YOUR ACKNOWLEDGEMENT TO BE RECEIVED AT

THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted , such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted ; or (c) By ___________ 1 x x

697DCK-26-R-00186

1 copies to the issuing office.

05/18/2026

(x)

The purpose of this solicitation amendment 0001 is to provide official responses to questions submitted. Additionally, this amendment will extend the proposal due date till

7/17/2026 at 1500 hrs ET.

1. Please clarify whether two or three Customer Satisfaction Surveys are required for responsiveness, given the language in Section L and Section M. The solicitation states that at least two surveys are required, but it also advises offerors to distribute more than three surveys and notes that receipt of fewer than three could lead to disqualification.

Response:

Submission of two Customer Satisfaction Surveys is acceptable to resolve the inconsistency.

Continued ...

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)15A. NAME AND TITLE OF SIGNER (Type or print)

15C. DATE SIGNED 16B. CONTRACT AUTHORITY 15B. CONTRACTOR/OFFEROR 16C. DATE SIGNED

(Signature of person authorized to sign) (Signature of Contracting Officer)

Richard L. Palsgrove

Except as provided herein, all terms and conditions of the document referenced in Item 9 A or 10A, as heretofore changed, remains unchanged and in full force and effect .

ITEM NO. SUPPLIES/SERVICES QUANTITY UNIT UNIT PRICE AMOUNT

NAME OF OFFEROR OR CONTRACTOR

2 3

CONTINUATION SHEET

REFERENCE NO. OF DOCUMENT BEING CONTINUED PAGE OF

(A) (B) (C) (D) (E) (F)

697DCK-26-R-00186/0001

The intent of distributing more than three surveys is to ensure the minimum of two Customer

Satisfaction Surveys are received.

2. Please confirm whether university research grants, contracts, or cooperative agreements may be used as relevant past experience if they involved comparable materials testing, fuel systems, compatibility evaluation, or test-rig development.

Response:

This is acceptable as long as the research grants, contracts, or cooperative agreements are relative in terms of scope and magnitude to the testing under solicitation.

3. Please confirm whether all CLINs must be priced even if subcontracted facilities or external vendors for selected specialized rig tests.

Response:

Yes, all CLINs must contain pricing information even if subcontracting or external vendors are used.

4. In addition, I would like to respectfully ask whether FAA would consider extending the proposal due date, currently June 18, 2026, by approximately one month.

Response:

The proposal extension is acceptable. The revised proposal due date of July 17th is incorporated into solicitation amendment 0001.

5. I cannot find any of the referenced PAFI documents listed in the paperwork posted on the

SAM website.

Table 2 - Reference Documents

NUMBER TITLE

PAFI-MTP-002 PAFI Materials Test Plan (attached version) n/a PAFI Materials Test Matrix (attached

Continued ...

ITEM NO. SUPPLIES/SERVICES QUANTITY UNIT UNIT PRICE AMOUNT

NAME OF OFFEROR OR CONTRACTOR

3 3

CONTINUATION SHEET

REFERENCE NO. OF DOCUMENT BEING CONTINUED PAGE OF

(A) (B) (C) (D) (E) (F)

697DCK-26-R-00186/0001

version) n/a PAFI Materials Test Minimum

Reporting and Format Requirements (attached version)

PAFI-RTP-001 PAFI Cold Flow Rig Test (attached version)

PAFI-RTP-004 PAFI Storage Stability Rig Test

(attached version)

PAFI-RTP-005 PAFI Cold Storage Freezer Test

(attached version)

PAFI-RTP-009 PAFI Dynamic Diaphragm Test

(attached version)

PAFI-RTP-010 PAFI Sump Drain Valve Test

(attached version)

14 CFR part 21 Certification Procedures for

Products and Parts n/a PAFI Non-Disclosure Agreement (NDA)

Response:

The referenced attachments are now contained within the contract supporting files.