Amadeus AC Command: Modify Availability Display

A complete guide to the AC command in Amadeus — how to modify an existing availability display without starting a new availability request.

AC is the Amadeus GDS command used to modify an existing availability display without starting a new availability request.

Category: Availability.

It allows you to quickly change the origin, destination, date, time, airline, booking class, cabin, connections, or display options of an existing availability screen.

The AC command is a time-saving tool. It reuses the parameters of the current display and only modifies the field you specify. This keeps the session fast, especially when a customer is comparing routes, dates, or airlines. Once you have identified the flight, sell the segment with SS.

Change the origin airport or city:

ACMAD

This changes the origin to Madrid (MAD) while keeping the current destination, date, and other parameters.

Change the destination:

AC//DUS

The double slash indicates the destination field. This changes the destination to Düsseldorf (DUS) without altering the origin.

Change both origin and destination:

ACCDGLHR

This changes the origin and destination to CDG–LHR in one entry — useful when the customer switches to a completely different route.

Change the travel date to 20 September:

AC20SEP

Move the date 5 days later:

AC5

Move the date 3 days earlier:

AC-3

Use the minus sign for earlier dates. These day-shift options are the fastest way to compare availability across adjacent travel dates without retyping the date.

Change the availability time to 16:00:

AC1600

This displays availability starting from 16:00 — useful when the customer is looking for an afternoon or evening departure.

Display availability for a specific airline:

AC/AAF

Display availability for all airlines:

AC/AYY

Use /A followed by the airline code to filter the display by carrier. The YY code displays all airlines.

Change the number of seats required to 8:

AC/B8

Change the booking class to F:

AC/CF

Clear the class-of-service preference:

AC/C

This removes any class filter and returns to the default multi-class display.

Change the cabin type:

AC/KY

The /K option changes the cabin — for example economy, business, or first — without retyping the full availability request.

Change the display to online connections:

AC/O

Change the connecting city to FRA:

AC/XFRA

Change to a connection availability display:

AC/NSJO

This changes the display to a connection search via a specific city — useful when the customer’s preferred direct flight is not available and you need to see connection options.

Change the flight type:

AC/FC

This modifies the flight type filter — for example switching between direct, non-stop, or connecting flights.

Change the information in the first display:

AC25MAR*

Change the information in the second display:

AC*25MAR

Change the information in both displays:

AC19MAY*21JUN

Change a single availability display to a dual-city pair display:

AC*

Change the first display back to a single availability display:

ACF

Change the second display back to a single availability display:

ACS

The dual-city pair format allows you to view outbound and return availability side by side, and then switch back to a single display when you are ready to focus on one leg.

Use AC when you need to modify an existing availability display quickly instead of entering a completely new AN availability request. Typical scenarios include:

• Comparing availability across several travel dates or routes.
• Filtering the display to a specific airline or cabin.
• Changing the number of seats required for a group.
• Switching the booking class without retyping the full entry.
• Displaying connections via a specific hub city.
• Viewing outbound and return availability side by side.
• Reviewing availability before selling the segment with SS.

A typical availability session using AC might look like this:

• Open availability for the customer’s preferred route and date with AN.
• Review the flights with the customer.
• Enter AC20SEP to move to a different date, or AC/AAF to filter for a specific airline.
• Use AC5 or AC-3 to shift the date forward or backward by a number of days.
• Check flight details with DO if needed.
• Sell the chosen flight with SS.
• If the connection is tight, check the minimum connecting time with DM.
• Continue with pricing using FXP and save with ER or ET.

• AC → modifies an existing availability display without a new request.
• AN → opens a new availability request for a route and date.
• ACR → redisplays availability for the same or a different date.
• SS → sells confirmed flight segments from availability.
• DO → displays detailed flight information for a specific flight.
• DM → displays the minimum connecting time for a connection.
• TN and SN → display flight timetables and schedules between two cities.
• RTIM and RTAM → display the itinerary with married segment indicators.

The distinction matters: AN starts a new availability search; AC modifies the current one; ACR redisplays the current one for a different date or time. Use AC whenever you want to adjust a field rather than retype the whole entry.

Important: The AC command modifies the current availability display. If the display has been replaced by another screen — a PNR, a schedule, or a timetable — there is no current availability display to modify, so AC will not work as expected. Open a new availability request with AN first, then use AC to adjust the display.

Some availability modifications — such as filtering by airline or changing the cabin — may reduce the number of flights shown. If the results are empty, relax the filter with AC/AYY or use AN to start fresh.

What does the AC command do in Amadeus?

AC modifies an existing availability display without starting a new availability request. It changes the origin, destination, date, time, airline, class, cabin, connections, or display options.

What does AC20SEP mean?

It changes the travel date in the current availability display to 20 September.

What does AC5 mean?

It moves the date in the current availability display 5 days forward. Use AC-3 to move 3 days back.

How do I filter availability by airline?

Use AC/AAF to filter for Air France, or AC/AYY to display all airlines.

How do I change the number of seats or booking class?

Use AC/B8 to change the seat count to 8, AC/CF to change the booking class to F, or AC/C to clear the class filter.

How is AC different from AN or ACR?

AN starts a new availability search; AC modifies the current one; ACR redisplays the current one for a different date or time.

• AC command
• Amadeus AC
• modify availability Amadeus
• ACMAD
• AC20SEP
• AC/AAF
• AC/B8
• AC25MAR
• availability display Amadeus
• AN availability