# STC SA04518CH

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: West Star Aviation, United States
- Description: Installation of a Honeywell Flight Management System Software Update to version NZ 6.2.1 in accordance with West Star Aviation Master Data List, Doc. No. A21312L-652, Revision I/R, dated October 4, 2021, or later FAA-approved revision.
- Applied: September 16, 2021
- Status date: November 5, 2021
- Product: Aircraft
- Certification basis: Part 21, Part 25
- Data sheets: [TCDS T00007WI](https://openairdocs.org/tcds/T00007WI)
- Certificate PDF: https://openairdocs.org/files/sha256/c1/ba/c1bae4292801f5c2224145b58b59faabec69b904fc0a63c61cff1c1b335b1624
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/2AE13B00EF3D329C8625879F0066B6D6.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA04518CH

## ADs that name it (0)

None.

## Approved models (1)

- Textron Aviation Inc. 750 ([TCDS T00007WI](https://openairdocs.org/tcds/T00007WI))

## What the certificate says

Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record.

Number: ST04518CH

Part 25 of the Federal Aviation Regulations.

(See Page 3 of 3 for complete certification basis.)

Original Product Type Certificate Number: T00007WI Make: Textron Aviation, Inc.

Model: 750

1) This STC is applicable to the following serial numbers: MSN 750-0001 through 750-0500.

2) The installer must determine whether this design change is compatible with previously approved modifications.

3) FAA Approved Airplane Flight Manual Supplement, West Star Aviation Doc. No. A21312M-657, Revision I/R, approved November 5, 2021, or later FAA approved revision is required on board the modified aircraft.

4) If the STC holder agrees to permit another person to use this certificate to alter a product, the holder must give the other person written evidence of that permission.

Date of Application: September 16, 2021 Date Reissued:

Date of Issuance: November 5, 2021 Date Amended:

Brenda L. Litchfield ODA Administrator Title: Envoy Aerospace, LLC ODA-831240-CE West Star Aviation 2 Airline Court East Alton, IL 62024 Installation of a Honeywell Flight Management System Software Update to version NZ 6.2.1 in accordance with West Star Aviation Master Data List, Doc. No. A21312L-652, Revision I/R, dated October 4, 2021, or later FAA- approved revision.

Number: ST04518CH Date of Issuance: November 5, 2021

(Continuation Sheet) Number: ST04518CH Date of Issuance: November 5, 2021 Certification Basis (continued):

Based on 14 CFR §§ 21.115 and 21.101, and the FAA policy for significant changes in FAA Order 8110.48, the certification basis for the Textron Aviation, Inc. 750 is as follows:

a. The type certification basis for the Textron Aviation, Inc. 750 is shown on TCDS T00007WI for parts not changed or affected by the change.

b. This certification basis for parts changed or affected by the change since the reference date of application is based upon TCDS T00007WI. Based on 14 CFR 21.115 and 21.101, and the FAA policy for significant changes in Order 8110.48, the certification basis for this modification was determined to be:

Applicable regulations at the amendment shown on TCDS T00007WI § 25.29(a)(b) § 25.771(a) § 25.777(a)(c) § 25.1301(a)(b)(c)(d) § 25.1309(a)(b)(c)(d)(e)(f)(g) § 25.1316(b)(c) § 25.1322(a)(b)(c)(d) § 25.1351(a)(1) § 25.1353(a) § 25.1381(a)(b) § 25.1431(a)(b)(c) § 25.1501(a)(b) § 25.1523(a)(b) § 25.1529 § 25.1581(a)(b)(d) § 25.1583(h) § 25.1585(a)

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## Every issue (1)

- November 5, 2021: Issued, Current. [certificate](https://openairdocs.org/files/sha256/c1/ba/c1bae4292801f5c2224145b58b59faabec69b904fc0a63c61cff1c1b335b1624)

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