What it approves
Installation of a GI-275 Standby Instrument
What the certificate says
From the PDF’s text layer, without the form’s printed wording. Layout and order may differ; the PDF is the record.
ST12481LA U.S. Technical Consultants, Inc 2461 E. Orangethorpe Ave, Suite 105 Fullerton, CA 92831 Part 25 Title 14 CFR Federal Aviation Regulations A6WE Boeing 717-200 Installation of a GI-275 Standby Instrument in accordance with U.S. Technical Consultants, Inc. Master Drawing List (MDL) Doc. No. 23303-34-000, Revision C, dated July 30, 2026 or later Federal Aviation Administration (FAA) approved revision. Operated in accordance with Flight Manual Supplement (FMS) Doc. No. U10-0825, Revision NC, September 15, 2026 or later FAA-approved revision.
1) Instructions for Continued Airworthiness (ICA) U10-0823, Revision NC, dated October 31, 2024, or later FAA accepted revision must be made available to the operator at the time of installation.
2) This supplemental type certificate applies to the models listed above and only to the specific serial numbers as listed on the U.S. Technical Consultants, Inc. MDL.
(See Continuation Sheet Page 3 of 3 Pages) 06/26/2024 10/09/2026 for Manager, West Certification Branch 3
ST12481LA 10/09/2026 3
ST12481LA 10/09/2026 Limitations and Conditions (continued):
3) A copy of this certificate, the ICA, and the FMS must be maintained as part of the permanent records for the modified aircraft.
4) The installation should not be incorporated in any aircraft unless it is determined that the interrelationship between this installation and any previously approved configurations will not introduce any adverse effect upon the airworthiness of the aircraft.
5) If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.
Certification Basis:
Based on 14 CFR §§ 21.115 and 21.101, FAA Order 8110.48A, and AC 21.101-1B, the type certification basis for the Installation of the Garmin GI-275 Standby Instrument on Boeing Model 717-200 series aircraft is determined to be as follows:
a) The type certification basis for areas not changed or not affected by this modification remain as specified in the applicable TCDS.
b) The certification basis for 14 CFR 25 areas changed or affected by this modification are determined as shown in TCDS.
Compliance with the following 14 CFR 26 regulations as amended by 26-0 through 26-7:
26.11(c), Amdt. 26-7 3 3 Add Page
ADs that name this STC · 0
An AD can apply because an STC is installed, or mention one in its text.
Approved models · 1
| Make | Model | Data sheet |
|---|---|---|
| The Boeing Company | 717-200 | A6WE |