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Last updated 31-05-2010

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SCR Messages

 
 

Principles

All Air Carriers operating to and from coordinated airports must always submit a request for the allocation of landing and/or take-off slots to the coordinator and receive approval before operating.

We advise operators to request their slots at least three business days before operation. Messages must be sent through a SCR format (Slot Clearance Request/ Response) in conformity with chapter 6 of the IATA SSIM Manual.

Dates, days and times will be strictly in UTC.

When a slot cannot be allocated as requested, offers made by the Coordinator will be valid for three business days only. If no reply is received offer will be cancelled.
This is applicable for the submission as well as for any later modifications and cancellations.

Re-clearance of the slot on the actual day of operation should be requested only when flight is delayed to the following day.

 

Standard

The SCR message consists of 3 parts: message header, schedule information data line(s) and the message footer.

1. Header

SCR   -> message type: SCR = Slot Clearance Request
/   -> reply address (e-mail or SITA) MANDATORY and/or creator reference (optional)
S08   -> IATA schedules season concerned      
20APR   -> date of message
BRU   -> clearance airport concerned

2. Data Lines

N XY123 XY124 01JUL 30SEP 1234500 120319 CDG 0700 0750 CDG JJ
1 2 3 4 5 6 7 8 9 10 11 12
1 action code more details...
2 arrival flight designator, number (suffix possible)
  flight number must consist of min. 3 digits 		 
3 departure flight designator, number (suffix possible)
  flight number must consist of min. 3 digits 		 
4 start of period or single day  
5 end of period or single day  
6 day(s) of operation more details...
7 number of seats fitted (3 digits) and IATA aircraft subtype (3 alphanumeric)  
8 origin/previous station (arriving from)  
9 required arrival time in UTC  
10 required departure time in UTC  
11 next/destination station (departure to)  
12 arrival and departure service types (may be different) more details...
Important: between the following blocks a space character is mandatory: [2-3-4], [5-6-7-8], [9-10], [11-12]

3. Footer

It is mandatory that any free text following the data line(s) always starts with 'SI' or 'GI'
SI (Supplementary Information) must be used only for data related with scheduling information.
GI (General Information) is used  for greetings and non scheduling information.

 

Examples

New flights:

1. Turnaround flights arriving and departing the same day:

SCR
W08
10DEC
BRU
NBD615 BD616 27OCT27MAR 1234500 037ER3 LBA1905 1935LBA JJ

Reply from the Coordinator confirming the slot:

SCR
W08
10DEC
BRU
KBD615 BD616 27OCT27MAR 1234500 037ER3 LBA1905 1935LBA JJ
GI BRGDS BRU SLOT COORD

2. Turnaround flights arriving and departing the next day:

SCR
W08
10DEC
BRU
NBD615 BD616 27OCT27MAR 1234500 037ER3 LBA1905 06001LBA JJ

Reply from the Coordinator confirming the slot:

SCR
W08
10DEC
BRU
KBD615 BD616 27OCT27MAR 1234500 037ER3 LBA1905 06001LBA JJ
GI BRGDS BRU SLOT COORD

Coordinator offering a new slot:

SCR
W08
10DEC
BRU
UBD615 BD616 27OCT27MAR 1234500 037ER3 LBA1905 1935LBA JJ
OBD615 BD616 27OCT27MAR 1234500 037ER3 LBA1905 1945LBA JJ
SI PLS CHECK OFFER AND REPLY WITHIN 3 DAYS
GI BRGDS BRU SLOT COORD

Acceptance of the offer:

SCR
W08
10DEC
BRU
ABD615 BD616 27OCT27MAR 1234500 037ER3 LBA1905 1945LBA JJ

If offer this declined (with action code Z), no slot will be held for the flight.

Cancellation of an existing flight:

SCR
W08
17DEC
BRU
DBA404 BA401 19DEC19DEC 0000500 188321 LHR1850 1935LHR JJ

Reply from the Coordinator:

SCR
W08
17DEC
BRU
XBA404 BA401 19DEC19DEC 0000500 188321 LHR1850 1935LHR JJ

Change of aircraft type and time:

SCR
W08
17DEC
BRU
CKL1725 KL1726 26OCT19DEC 1234567 080F70 AMS1155 1220AMS JJ
RKL1725 KL1726 26OCT19DEC 1234567 103100 AMS1155 1220AMS JJ

Reply from the Coordinator:

SCR
W08
17DEC
BRU
XKL1725 KL1726 26OCT19DEC 1234567 080F70 AMS1155 1220AMS JJ
KKL1725 KL1726 26OCT19DEC 1234567 103100 AMS1155 1220AMS JJ

Action Codes

airline coordinator
  A acceptance of an offer - no further improvement desired H holding
  C schedule to be changed K confirmation
  D delete schedule O offer
  L revised schedule - no offer acceptable P pending (action or advice)
  N new schedule U unable (refusal)
  P acceptance of an offer - maintain on waitlist W unable to reconcile flight information
  R revised schedule (offer acceptable) X cancellation
  Z decline offer  

back to 2. Data lines

Days of operation:
Day(s) of operation are indicated with the numbers 1 through 7 in the applicable position for each day of the week with Monday being day 1. Non-operational days are indicated by a 0 (zero) in the applicable position(s) between 1 and 7

back to 2. Data lines

Main service types:
 J - Scheduled passenger - normal service
F - Scheduled cargo/mail
G - Additional passenger - normal service
C - Charter passenger
H - Charter cargo/mail
P - Positioning, ferry flight
T - Technical test
K - Training
X - Technical stop (e.g. fuel stop)

back to 2. Data Lines