Title: FIS - Unspecified initial state in transitions

PDR Reference:                  	98050014
Originator Reference:             	ATNSI_FIS02 
SARPs Document Reference:        FIS SARPs, Sections 2.4.5.3.6.4 and 2.4.5.3.6.5
Status:                         	RESOLVED 
Impact :					C (Clarification)
PDR Revision Date:                 	25/06/98 (PROPOSED -> RESOLVED)
						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 
SARPs Language:                  	English

Summary of Defect:

These two sections do not indicate the initial the state for the specified transitions. This erroneous, because the specified transitions are valid only if the ground FIS DC module is in the DC-G-PENDING state.

Impact on interoperability:

None. The error - instead of being detected immediatly by the FIs-ground-ASE - is detected by the FIS-air-ASE on receipt of the [FISAccept] or [FISReject] APDU.

Impact on safety:

This may increase the crew workload since an abort alarm is sent to the pilot indicating an error of the ground system. It is much more efficient to detect the error on the ground before any data be sent to the aircraft.
 
Assigned SME:                              Sub-Volume II SME

Proposed SARPs amendment: 

1/ Section 2.4.5.3.6.4 should be changed from:

2.4.5.3.6.4   Upon receipt of a FIS-demand-contract response with the Result parameter containing the abstract value "positive acknowledgement", the ground FIS DC module shall:

to:

2.4.5.3.6.4   Upon receipt of a FIS-demand-contract response with the Result parameter containing the abstract value "positive
acknowledgement", then

2.4.5.3.6.4.1 If in the DC-G-PENDING state, the ground FIS DC module shall:

2/ Section 2.4.5.3.6.5 should be changed from:

2.4.5.3.6.5   Upon receipt of a FIS-demand-contract response with the Result parameter containing the abstract value "rejected", the ground FIS DC module shall:

to:

2.4.5.3.6.5   Upon receipt of a FIS-demand-contract response with the Result parameter containing the abstract value "rejected", then

2.4.5.3.6.5.1 If in the DC-G-PENDING state, the ground FIS DC module shall:

SME Recommendation to CCB:                 		

CCB Decision:                                      		atnp_ccb_chair: SUBMITTED (12/05/98)
						atnp_ccb_chair: ACCEPTED (20/05/98)
						CCB-6 (Utrecht): RESOLVED (25/06/98)