Conduct a Ground Run (Menu Mode) [CFML]

TASK 73-29-00-710-805-A
Conduct a Ground Run (Menu Mode)

WARNING: MAKE SURE THAT ALL ENGINE OPERATING AREAS ARE AS CLEAN AS POSSIBLE. ALL RAMPS, TAXIWAYS, RUNWAYS AND OTHER OPERATING AREAS MUST BE VERY CLEAN TO PREVENT BAD DAMAGE TO THE ENGINE, AIRCRAFT AND PERSONS IN THE AREA.

ZONE: 210

1. Reason for the Job
The ground run (Menu Mode) feature allows the operator to run the engine through various engine speed settings to capture engine vibration data.
The vibration data collected via the ground run is used to calculate a fan trim balance solution via the one-shot or advance trim balance functions. The fan trim balance solution can be implemented by modifying the fan trim balance weights to reduce engine vibration.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	WARNING NOTICE(S)
98F10103500000	2	CHOCK-MLG,ENGINE RUN-UP

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 31-32-00-860-012-A	Procedure to Get Access to the SYSTEM REPORT/TEST/ENG Page
TASK 71-00-00-860-827-A	Start the Engine (Normal Automatic Start)
TASK 71-00-00-860-828-A	Start the Engine (Normal Manual Start)
TASK 71-00-00-860-829-A	Engine Shutdown
TASK 71-00-00-869-802-A	Wind Limitations During Engine Ground Operations
TASK 71-00-00-869-803-A	Safety Precautions During Engine Ground Operations
Tool Installation
Special Functions Menu
Engine Balancing Submenu
Ground Run Submenu
Start Ground Run Page
Confirm Ground Run Start Page
Ground Run in Progress
Ground Run Successfully Stored
EEC NVM Error

3. Job Set-up
Subtask 73-29-00-869-068-A

A. Safety Precautions
(1) Put the aircraft with the nose pointing into the wind prior to run the engine at high power.

CAUTION: MAKE SURE THAT THE AIRCRAFT IS PARKED ON A CLEAN, DRY AND FLAT SURFACE. THERE MUST BE NO OIL, GREASE OR SIMILAR MATERIALS ON THE SURFACE. THE PAVEMENT MUST NOT BE BROKEN OR LOOSE, AND WE RECOMMEND CONCRETE MATERIAL BECAUSE ASPHALT CAN MELT AND CAUSE DAMAGE TO THE AIRCRAFT.

(2) Obey the wind limitations and safety precautions during engine ground operation (Ref. AMM TASK 71-00-00-869-803) and (Ref. AMM TASK 71-00-00-869-802).
(3) Make sure that the 98F10103500000 CHOCK-MLG,ENGINE RUN-UP is in position in front of each forward outboard MLG wheel.

Tool Installation

(4) Make sure that a total of 6614 lb (3000 kg) (minimum) of fuel are in the inner tanks to make sure that the aircraft is stable during the test.

NOTE: This minimum fuel quantity does not include the fuel consumption of the engines necessary to do the test. This minimum quantity must stay in the inner tank at the end of the test.

(5) There must be two qualified persons in the cockpit when performing an engine run. One must monitor the outside and the aircraft behavior while the other performs the engine test.
(6) If the aircraft begins to move while performing an engine run, immediately set all the thrust levers to idle position.

Subtask 73-29-00-861-075-A

B. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).

Subtask 73-29-00-865-088-A

C. Make sure that this(these) circuit breaker(s) is(are) closed:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	ENGINE/1 AND 2/IGN/SYS A	1JH	A03
FOR FIN: 4020KM1 (POWER PLANTDEMOUNTABLE, ENGINE 1)
49VU	ENGINE/1/FADEC A/AND EIU 1	2KS1	A04
121VU	ENGINE/IGN/ENG1/SYS B	3JH1	P41
121VU	ENGINE/ENG1/FADEC B/AND EIU 1	4KS1	R40
FOR FIN: 4020KM2 (POWER PLANTDEMOUNTABLE, ENGINE 2)
49VU	ENGINE/2/FADEC A/AND EIU 2	2KS2	A05
121VU	ENGINE/IGN/ENG2/SYS B	3JH2	P42
121VU	ENGINE/ENG2/FADEC B/AND EIU2	4KS2	R41

Subtask 73-29-00-860-106-A

D. Aircraft Maintenance Configuration
(1) On the ENG section of maintenance panel 50VU:
(a) Push the FADEC GND PWR 1(2) pushbutton switch.
(b) The ON legend of this pushbutton switch comes on.
(2) On the AIR COND panel 30VU:
(a) Make sure that the APU BLEED pushbutton switch is released (ON legend off).
(b) Install a WARNING NOTICE(S) to tell persons not to use it.
(3) Put a WARNING NOTICE(S) on the HP ground connector to tell persons not to pressurize the pneumatic system.
(4) On the overhead panel, on the ADIRS CDU, set the three OFF/NAV/ATT selector switches to NAV.
(5) On the left or right Multipurpose Control and Display Unit (MCDU), get the SYSTEM REPORT/TEST/ENG page (Ref. AMM TASK 31-32-00-860-012).

4. Procedure

CAUTION: DO NOT ENTER A FLIGHT NUMBER IN THE CFDIU. IF YOU DO, THE MENU MODE WILL STOP WHEN YOU START THE OTHER ENGINE.

Subtask 73-29-00-710-079-A

A. Do the Ground Run (Menu Mode) Function

NOTE: The Menu Mode Ground Run function is expected to take approximately 10 minutes to complete.

NOTE: After selecting the MCDU button, it may take approximately ten seconds to transition to the next Menu Mode screen.

NOTE: The EEC will not enter the menu mode (interactive mode) after an enquire command from the CFDS (Centralized Fault Display System) when any of the following conditions are set:

N2 more than ten percent or invalid
Rotary selector is set on: CRANK or IGN/START or invalid
Manual Start Button set on: ON or invalid
Throttle Lever Angle not at idle or invalid
Flight configuration
MASTER lever ON or invalid
BITE command code input label invalid.

NOTE: The EEC will abort a running test or special function when any of the following conditions becomes set:

Flight configuration
You enter in the interactive mode of the other channel.

(1) On the landing gear control and indicating panel 402VU:

CAUTION: DO NOT OPEN LGCIU CIRCUIT BREAKERS 1GA, 2GA AND 52GA. IF YOU DO THIS, AIRCRAFT BRAKING THROUGH BRAKE PEDALS DOES NOT OPERATE.

(a) Make sure that the A/SKID & N/WSTRG selector switch 5GG is ON.
(b) Make sure that the PARKING BRAKE control switch is in ON position.
(2) If the N1 target will be more than or equal to 75 percent, do as follows:
(a) Start the no-tested engine (Ref. AMM TASK 71-00-00-860-827) or (Ref. AMM TASK 71-00-00-860-828).
(b) Accelerate the no-tested engine to N1=50%.
(3) Do the test as follow:

ACTION	RESULT
1.From the Menu Mode main menu, select the key adjacent to SPECIAL FUNCTIONS (2R).	The Special Functions menu is displayed. Special Functions Menu
2.Select the key adjacent to ENGINE BALANCING (1R).	The Engine Balancing submenu is displayed. Engine Balancing Submenu
3.Select the key adjacent to CONDUCT GROUND RUN (4R).	The Ground Run submenu is displayed. Ground Run Submenu
4.Select NORMAL GROUND RUN (4R).	The Start Ground Run screen is displayed. Start Ground Run Page NOTE: The EEC will abort the ground run Menu Mode function if one or more of the following conditions occur: - EEC flight/ground logic - Cross-channel EEC sets the channel switch request.
5.Select the key adjacent to START GROUND RUN (5R).	The Confirm Ground Run Start screen is displayed. Confirm Ground Run Start Page
WARNING: BEFORE YOU START THE ENGINE, MAKE SURE THAT: YOU OBEY ALL THE ENGINE SAFETY PRECAUTIONS YOU DO ALL THE OPERATIONS NECESSARY TO PREVENT MOVEMENT OF THE AIRCRAFT. IF YOU DO NOT OBEY THESE PRECAUTIONS, INJURY TO THE PERSONNEL AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT CAN OCCUR. 6.Start the tested engine (Ref. AMM TASK 71-00-00-860-827) or (Ref. AMM TASK 71-00-00-860-828) and make sure that the following cockpit controls are set: - Start switch to IGN/START - Master lever to ON Once the engine is at idle, select the key adjacent to CONFIRM START (5L).
7.Push and hold the brake pedals at the full limit position.
8.Accelerate smoothly and continually the tested engine until to the first speed range that you want to capture. Then wait for 10 seconds.	Ground Run in Progress
9.Accelerate again smoothly and continually to the next speed range that you want to capture. Then wait for 10 seconds.	Data must be captured for a minimum of three speed ranges to compute a new balance solution. Data through more speed ranges offer more data to compute a more accurate balance solution. The KEEP GROUND RUN selection is displayed after vibration data has been captured in three speed ranges.
10.Repeat step 9 until to all wanted speed range are captured (minimum of three speed ranges), select the key adjacent to SAVE GROUND RUN (5R) to store vibration data to EEC memory (both channels).	Ground Run Successfully Stored EEC NVM Error - Make sure that no EEC NVM, electrical power or cross-channel faults are present prior to re-attempting ground run.
11.Return the engine(s) to idle and operate at idle for a minimum of 5 minutes. Once the engine is at idle: Release the brake pedals Select the key adjacent to RETURN (6L) to go back to the Engine Balancing submenu.
12.Shut down the engine(s) (Ref. AMM TASK 71-00-00-860-829) and make sure the following cockpit controls are set: Start switch to NORM Master lever to OFF.

5. Close-up
Subtask 73-29-00-860-114-A

A. Put the aircraft back to its initial configuration.
(1) On the ENG section of the maintenance panel 50VU:
(a) Release the FADEC GND PWR 1(2) pushbutton switch.

The ON legend goes off.

(2) On the overhead panel, on the ADIRS CDU, set the three OFF/NAV/ATT selector switches to OFF.
(3) Remove the WARNING NOTICE(S).

Subtask 73-29-00-862-075-A

B. De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

Subtask 73-29-00-869-082-A

C. Remove the 98F10103500000 CHOCK-MLG,ENGINE RUN-UP from each forward outboard MLG wheel.

[Rev.10 from 2021] 2026.04.01 12:57:53 UTC