# STC ST04706NY

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: H4 Aerospace (UK) Ltd., United Kingdom
- Description: Installation of ADS-B Upgrade using alternate GPS
- Applied: February 1, 2022
- Status date: February 10, 2022
- Product: Aircraft, Large Airplane
- Certification basis: Part 25
- Data sheets: [TCDS T00001SE](https://openairdocs.org/tcds/T00001SE)
- Certificate PDF: https://openairdocs.org/files/sha256/99/73/99735f3134659a0d51abb8c325acc86c0c1398c83b8a35f5c2f47843ef846d16
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID148525157520230209203845.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/ST04706NY

## ADs that name it (0)

None.

## Approved models (5)

- The Boeing Company 777-200 Series ([TCDS T00001SE](https://openairdocs.org/tcds/T00001SE))
- The Boeing Company 777-200LR Series ([TCDS T00001SE](https://openairdocs.org/tcds/T00001SE))
- The Boeing Company 777-300 Series ([TCDS T00001SE](https://openairdocs.org/tcds/T00001SE))
- The Boeing Company 777-300ER Series ([TCDS T00001SE](https://openairdocs.org/tcds/T00001SE))
- The Boeing Company 777F Series ([TCDS T00001SE](https://openairdocs.org/tcds/T00001SE))

## 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.

Blue Court 39 Queensway Hemel Hempstead, Hertfordshire, HP2 5HE United Kingdom Part 25 Title 14 Code of Federal Regulations T00001SE The Boeing Company 777-200/-200LR/-300/-300ER Series 777F Series

1. Installation of ADS-B Upgrade using alternate GPS must be in accordance with H4 Aerospace Modification Summary Sheet and Declaration of Compliance Doc. H4A1883, Issue 10, dated October 14, 2021, or later UK CAA approved revisions.

(See Description of Type Design Change Continued on Page 3 of 3)

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

(See Limitations and Conditions Continued on Page 3 of 3) February 1, 2022 February 10, 2022 Anthony E. Gallo Manager, International Validation Branch Compliance & Airworthiness Division Aircraft Certification Service 3

Description of Type Design Change (continued):

2. Aircraft is to be maintained in accordance with H4 Aerospace Instructions for Continued Airworthiness Doc. H4AICA005, Issue 8, dated October 14, 2021, or later UK CAA accepted revisions.

3. Aircraft is to be operated in accordance with H4 Aerospace Airplane Flight Manual Supplement Doc. H4AFMS049, Rev. 9, dated October 8, 2021, or later UK CAA approved revisions.

2. If the holder agrees to permit another person to use the certificate to alter the product, the holder shall give the other person written evidence of that permission.

3. This STC is applicable to serial numbers as listed in H4 Aerospace Modification Summary Sheet and Declaration of Compliance Doc. referenced in item 1 of the Description of Type Design Change section of this STC.

----------END---------- 3 3

## Every issue (1)

- February 10, 2022: Issued, Current. [certificate](https://openairdocs.org/files/sha256/99/73/99735f3134659a0d51abb8c325acc86c0c1398c83b8a35f5c2f47843ef846d16)

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