Title: ADS - Minor defects

PDR Reference:                                 	98050004
Originator Reference:                         	ATNSI_ADS01
SARPs Document Reference:                  	ADS SARPs, Section numbers: 
								see below
Status:                                     	RESOLVED 
Impact :							D (Minor)
PDR Revision Date:                             17/08/98 (FORWARDED -> RESOLVED)
								26/06/98 (PROPOSED -> FORWARDED)    	
								20/05/98 (SUBMITTED -> ACCEPTED										-> PROPOSED)
PDR Submission Date:                       	12/05/98 
Submitting State/Organization:                 	AIRSYS ATM (ACI/ATNSI)
Submitting Author Name:                     	Ilkiewicz, M / Stokes, S.
Submitting Author E-mail Address:        												michel.ilkiewicz@cdv.vly.sextant.thomson.fr 
					Shawn.Stokes@ATNSI.COM 
Submitting Author Supplemental 
Contact Information:                       
SARPs Date:                                 	IV2.2, March 98
SARPs Language:                            	English

Summary of Defect:

1/ Section 2.2.1.4.1.1 should be changed from:
"An ADS-air-ASE shall be capable of decoding [ADSAircraftPDUs] APDUs and decoding [ADSGroundPDUs] APDUs."

to:
"An ADS-air-ASE shall be capable of encoding [ADSAircraftPDUs] APDUs and decoding [ADSGroundPDUs] APDUs."
2/ Section 2.2.1.4.1.2 should be changed from:
"An ADS-ground-ASE shall be capable of decoding [ADSGroundPDUs] APDUs and decoding [ADSAircraftPDUs] APDUs."

to:
"An ADS-ground-ASE shall be capable of encoding [ADSGroundPDUs] APDUs and decoding [ADSAircraftPDUs] APDUs."

3/ Section 2.2.1.5.3.6.3.1, table 2.2.1.5-7, should be changed from:
report element of the ADS-demand-contract-PDU

to:
report element of the ADS-demand-report-PDU

4/ Section 2.2.1.5.3.6.4.1, table 2.2.1.5-8, should be changed from:
report element of the ADS-demand-contract-PDU

to:
report element of the ADS-demand-report-PDU

5/ Section 2.2.1.5.3.10.10.1, table 2.2.1.5-40 should be changed from:
from the event-ncn PDU element

to:
from the periodic-ncn PDU element

6/ Section 2.2.1.5.3.15.4 should be changed from:
from the ground DC, EC, PC or EM modules

to:
from the ground EC, PC or EM modules

7/ Section 2.2.1.5.3.16.4 should be changed from:
from the ground AB module

to:
from the air AB module

8/ Section 2.2.1.5.3.16.4.1 should be changed from:
enter the LI-G-IDLE state

to:
enter the LI-A-IDLE state

9/ Section 2.2.1.5.5.1.1, note 1 should be changed from:
internal system error

to:
unrecoverable error

10/ Table 2.2.1.5-74, in LI-A-IDLE state, on D-START ind event, next state should be changed from:
LI-G-START

to:
LI-A-START

11/ Section 2.2.1.7.1.5.3 should be changed from:
an ADS-demand-contract request, or an ADS-event-contract-request or an ADS-periodic-contract-request

to:
an ADS-demand-contract indication, or an ADS-event-contract indication or an ADS-periodic-contract indication

Assigned SME:                              		Sub-Volume II SME

Proposed SARPs amendment: 

See above.

SME Recommendation to CCB:                 	

All changes are relevant. However, these changes are mainly editorial:
1 and 2/ there is no ambiguity on which APDUs the air and the ground ASEs shall be able to encode and decode.
3, 4 and 5/ typo, sections 2.2.1.5.3.6.3, 2.2.1.5.3.6.4 and 2.2.1.5.3.10.10 define clearly the type of the received APDU.
6/ overspecification, the situation can not occur for the DC module. 
7 and 8/ typo, section 2.2.1.5.3.16 makes clear that this section is related to the air ADS-ASE LI module.
9/ change in a note.
10/ change in the state table, the textual description takes precedence.
11/ no ambiguity, the change is obvious.

CCB Decision:                	atnp_ccb_chair: SUBMITTED (12/05/98)
					atnp_ccb_chair: ACCEPTED (20/05/98)
					CCB-6 (Utrecht): FORWARDED
					Atnp_ccb_chair : RESOLVED (1)

(1) CCB agreed that this PDR should be upgraded to RESOLVED status and should appear as part of the first annual amendment to Doc 9705. FORWARDED status is not appropriate since it indicates a PDR which has been referred to an ATNP WG for addition to its work program, i.e. a enhancement or major change to the baseline.