ASA’s FAR/AIM and Flight Crew 2010 Update(38)

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Navigation Integrity Category (NIC) speci.es an integrity con-tainment radius around an aircraft’s reported position, as de.ned in TSO-C166b and TSO-C154c.
Position Source refers to the equipment installed onboard an aircraft used to process and provide aircraft position (for example, latitude, longitude, and velocity) information.
Source Integrity Level (SIL) indicates the probability of the reported horizontal position exceeding the containment radius de.ned by the NIC on a per sample or per hour basis, as de.ned in TSO-C166b and TSO-C154c.
System Design Assurance (SDA) indicates the probability of an aircraft malfunction causing false or misleading information to be transmitted, as de.ned in TSO-C166b and TSO-C154c.
Total latency is the total time between when the position is measured and when the position is transmitted by the aircraft. Uncompensated latency is the time for which the aircraft does not compensate for latency.
(b)
1090 MHz ES and UAT Broadcast Links and Power Requirements—

(1)
 Aircraft operating in Class A airspace must have equipment installed that meets the antenna and power output requirements of Class A1, A1S, A2, A3, B1S, or B1 equipment as de.ned in TSO-C166b, Extended Squitter Automatic Dependent Surveil-lance-Broadcast (ADS-B) and Traf.c Information Service-Broad-cast (TIS-B) Equipment Operating on the Radio Frequency of 1090 Megahertz (MHz).

(2)
 Aircraft operating in airspace designated for ADS-B Out, but outside of Class A airspace, must have equipment installed that meets the antenna and output power requirements of either:

(i)
 Class A1, A1S, A2, A3, B1S, or B1 as de.ned in TSO-C166b; or

(ii)
 Class A1H, A1S, A2, A3, B1S, or B1 equipment as de.ned in TSO-C154c, Universal Access Transceiver (UAT) Automatic

Dependent Surveillance-Broadcast (ADS-B) Equipment Operat-ing on the Frequency of 978 MHz.
(c)
ADS-B Out Performance Requirements for NACp, NACv, NIC, SDA, and SIL—

(1)
 For aircraft broadcasting ADS-B Out as required under §91.225 (a) and (b)—

(i)
The aircraft’s NACp must be less than 0.05 nautical miles;

(ii)
The aircraft’s NACv must be less than 10 meters per second;

(iii) The aircraft’s NIC must be less than 0.2 nautical miles;
(iv)
The aircraft’s SDA must be 2; and

(v)
The aircraft’s SIL must be 3.

(2)
 Changes in NACp, NACv, SDA, and SIL must be broadcast within 10 seconds.

(3)
 Changes in NIC must be broadcast within 12 seconds.

(d)
Minimum Broadcast Message Element Set for ADS-B Out. Each aircraft must broadcast the following information, as de.ned in TSO-C166b or TSO-C154c. The pilot must enter infor-mation for message elements listed in paragraphs (d)(7) through (d)(10) of this section during the appropriate phase of .ight.

(1)
The length and width of the aircraft;

(2)
 An indication of the aircraft’s latitude and longitude;

(3)
 An indication of the aircraft’s barometric pressure altitude;

(4)
 An indication of the aircraft’s velocity;

(5)
 An indication if TCAS II or ACAS is installed and operating in a mode that can generate resolution advisory alerts;

(6)
 If an operable TCAS II or ACAS is installed, an indication if a resolution advisory is in effect;

(7)
 An indication of the Mode 3/A transponder code speci.ed by ATC;

(8)
 An indication of the aircraft’s call sign that is submitted on the .ight plan, or the aircraft’s registration number, except when the pilot has not .led a .ight plan, has not requested ATC ser-vices, and is using a TSO-C154c self-assigned temporary 24-bit address;

(9)
 An indication if the .ightcrew has identi.ed an emergency, radio communication failure, or unlawful interference;

(10)
 An indication of the aircraft’s “IDENT” to ATC;

(11)
 An indication of the aircraft assigned ICAO 24-bit address, except when the pilot has not .led a .ight plan, has not requested ATC services, and is using a TSO-C154c self-assigned temporary 24-bit address;

(12)
 An indication of the aircraft’s emitter category;

(13)
 An indication of whether an ADS-B In capability is installed;

(14)
 An indication of the aircraft’s geometric altitude;

(15)
 An indication of the Navigation Accuracy Category for Posi-tion (NACp);

(16)
 An indication of the Navigation Accuracy Category for Velocity (NACv);

(17)
 An indication of the Navigation Integrity Category (NIC);

(18)
 An indication of the System Design Assurance (SDA); and
　
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