TRS - Thrust Rating System

Thrust Rating System

Press TRS button on MCDU to open the Thrust Rating Section.

• The selected (active) thrust rating/mode is indicated in green

• The option not selected (standby) is shown in white.

When activated, the pilot-selected thrust rating (that is, AUTO , TOGA , CON , CLB , and CRZ ) is displayed in green font and the circular button next to the active rating is filled in green with a white outline. When not inhibited, all inactive thrust ratings are displayed in white font and the circular radio button is hollow with a white outline. When the AUTO thrust rating mode is selected, the active rating that is automatically selected by the TRS is displayed in green font within green brackets next to the AUTO thrust rating selection.

When a manually selected rating is active, the TRS transitions to AUTO mode when a single engine inoperative condition is initially sensed. Following this transition into AUTO mode, manual selection of thrust rating is permitted. When a manually selected rating is active, the TRS transitions to AUTO mode when the Flight Director mode transitions to go around or windshear. Following this transition into AUTO mode, manual selection of thrust rating is permitted if Flight DirectorGA orWS mode is no longer active.When amanually selected rating is active and the aircraft is In--Air, the TRS transitions to AUTO mode when the landing gear and flaps are extended.

Thrust Rating Modes

• AUTO - (Automatic mode) Thrust rating based on the current phase of flight when in auto rating mode

• TOGA - Takeoff/go-around mode

• CON - Maximum continuous power mode

• CLB1/2 - Climb modes

• CRZ - Cruise mode

Takeoff Dataset

Press TO DATASET (RSK6) on THRUST RATING SELECT page to enter the T/O DATASET MENU.

The takeoff dataset selection page lets the crew set various parameters for takeoff, such as temperature, status of ATTCS, Anti-Ice and ECS systems.

The TO DATASET MENU 1/1 is used for changing the takeoff thrust rating to accommodate for the different takeoff conditions. There are three possible takeoff dataset selections:

• TO-1

• TO-2

• TO-3

• TO-1 - Selects Takeoff Dataset 1 as the default takeoff thrust schedule. Header is available thrust value.

• TO-2 - Selects Takeoff Dataset 2 as the default takeoff thrust schedule. Header is available thrust value.

• TO TEMP - Used to manually correct the measured probe temperature. Entered temperature is used by the FADEC until 1,700 feet above takeoff altitude.

• [ENTER] - Transmits all data from Takeoff Dataset Menu to FADEC. No data is transmitted to the FADEC until the Accept button is pushed.

• ATTCS - Turns Automatic Takeoff Thrust Control System (ATTCS) on or off.

• REF ECS - Turns Environmental Control System Bleed on or off.

• REF A/I- Toggles Anti-Ice Bleed Configuration between:

  • OFF (Wing off; Nacelle off)

  • ENG (Wing off; Nacelle on)

  • ALL (Wing on; Nacelle on)

• FLEX/TO - Turns Flex Takeoff on or off.