Tso c166b 2026

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The document is a Technical Standard Order (TSO-C166b) issued by the Federal Aviation Administration (FAA) regarding the minimum performance standards for 1090 MHz Automatic Dependent Surveillance-Broadcast (ADS-B) and Traffic Information Service-Broadcast (TIS-B) equipment. It outlines the requirements for manufacturers seeking TSO authorization, including functionality, failure condition classifications, environmental and software qualifications, and marking requirements. The TSO applies to new applications submitted after its effective date of December 2, 2009, and specifies documentation and data requirements necessary for compliance.

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Click ‘Get Form’ to open the tso c166b document in the editor.
Begin by reviewing the 'Purpose' section, which outlines the minimum performance standards for your ADS-B and TIS-B equipment. Ensure you understand these requirements as they are crucial for compliance.
Move to the 'Applicability' section. Here, confirm that your application aligns with the effective date and any previous revisions that may affect your submission.
In the 'Requirements' section, carefully fill out each field related to functionality, environmental qualifications, and software specifications. Use our platform's text fields to input detailed information about your equipment.
Complete the 'Marking' section by entering all necessary identification details for your components. This includes serial numbers and manufacturer information, ensuring clarity for future reference.
Finally, review all sections for accuracy before submitting your completed form through our platform’s secure submission feature.

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Can you fly under a class C shelf without ADS-B?

ADS-B messages are broadcasted directly by the airplane, whereas ADS-C information are provided also via satellite link, but only to the Air Traffic Service (ATS). The continuous data in high resolution can be used to identify Space Weather effects on communication (data gaps) and navigation (position errors).

What is tso C146?

Transponders Needed for Class C Airspace If there is not a Mode C veil, pilots may fly under a Class C shelf without ADS-B. If you are flying over the ceiling and within the lateral boundaries of Class C airspace, you will need a transponder and ADS-B Out.

What is the difference between Mode C transponder and ADS-B out?

TSO-C145, Airborne Navigation Sensors Using the Global Positioning System Augmented by the Wide Area Augmentation System. TSO-C146, Stand-Alone Airborne Navigation Equipment Using the Global Positioning System Augmented by the Wide Area Augmentation System.