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Technical Provisions for Mode S Services and Extended Squitter

Technical Provisions for Mode S Services and Extended Squitter

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B-20 <strong>Technical</strong> <strong>Provisions</strong> <strong>for</strong> <strong>Mode</strong> S <strong>Services</strong> <strong>and</strong> <strong>Extended</strong> <strong>Squitter</strong><br />

4. TS (Target State Report Capability)<br />

0 = No capability <strong>for</strong> sending messages to support Target State Reports<br />

1 = Capability of sending messages to support Target State Reports<br />

5. TC (Target Change Report Capability)<br />

0 = No capability <strong>for</strong> sending messages to support Trajectory Change Reports<br />

1 = Capability of sending messages to support TC+0 Report only<br />

2 = Capability of sending in<strong>for</strong>mation <strong>for</strong> multiple TC Reports<br />

3 = Reserved<br />

Surface Capability Class (CC) Code <strong>for</strong> Version 1 Systems<br />

Msg Bit # 41 42 43 44 45 46 47 48 49 50 51 52<br />

“ME” Bit # 9 10 11 12 13 14 15 16 17 18 19 20<br />

Content<br />

Subfield Coding:<br />

Service level<br />

MSBs = 0 0<br />

POA CDTI<br />

1. CDTI (Cockpit Display of Traffic In<strong>for</strong>mation)<br />

0 = Traffic display not operational<br />

1 = Traffic display operational<br />

Service level<br />

LSBs = 0 0<br />

2. POA (Position Offset Applied)<br />

0 = Position transmitted is not the ADS-B position reference point<br />

1 = Position transmitted is the ADS-B position reference point<br />

3. B2 Low (Class B2 transmit power less than 70 Watts)<br />

0 = Greater than or equal to 70 Watts transmit power<br />

1 = Less than 70 Watts transmit power<br />

B.2.3.10.4 OPERATIONAL MODE (OM)<br />

B2<br />

Low<br />

Reserved<br />

Draft<br />

This 16-bit (ME bits 25–40, message bits 57–72) subfield shall be used to indicate the operational modes that are active<br />

on board the aircraft. Encoding of the subfield shall be as specified in the following table.<br />

Msg Bit # 57 58 59 60 61 62-72<br />

“ME” Bit # 25 26 27 28 29 30-40<br />

OM <strong>for</strong>mat<br />

DRAFT - Working Paper ASP TSGWP11-01 <strong>for</strong> review by the TSG during the meeting in June 2011 in Paris<br />

0 0<br />

ACAS<br />

RA active<br />

0 1 Reserved<br />

1 0 Reserved<br />

1 1 Reserved<br />

IDENT switch<br />

active<br />

Receiving ATC<br />

services<br />

Reserved<br />

DRAFT - Working Paper ASP TSGWP11-01 <strong>for</strong> review by the TSG during the meeting in June 2011 in Paris

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