Test No. 17 - Above Idle Test [PW11]

TASK 71-00-00-720-816-A
Test No. 17 - Above Idle Test

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.

ZONE: 400

1. Reason for the Job
A. If necessary, remove the ice and the snow from the surface.
B. Use this procedure to perform an off-idle engine operation to assist with fault confirmation per the troubleshooting manual procedures.
C. Perform the off-idle engine operation at 35 percent N1, 50 percent N1, 60 percent N1 or 80 percent N1 in order to confirm that the troubleshooting procedure corrected the fault.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
98F10103500000	2	CHOCK-MLG,ENGINE RUN-UP

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
400	POWER PLANT, NACELLES AND PYLONS

C. Referenced Information

REFERENCE	DESIGNATION
TASK 31-32-00-860-012-A	Procedure to Get Access to the SYSTEM REPORT/TEST/ENG Page
TASK 71-00-00-860-814-A	Shutdown of the Engine
TASK 71-00-00-860-822-A	Start the Engine (Normal Manual Start)
TASK 71-00-00-860-823-A	Start the Engine (Normal Automatic Start)
TASK 71-00-00-910-804-A	General Warnings and Cautions and Related Safety Data
Tool Installation

3. Job Set-up
Subtask 71-00-00-941-151-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) The wind direction and velocity can make the engine not stable. Make sure that the engine is operated with the intake pointed into the wind (Ref. AMM TASK 71-00-00-910-804).
(2) Install the 98F10103500000 CHOCK-MLG,ENGINE RUN-UP.

Tool Installation ** ON A/C NOT FOR ALL

(3) There must be two qualified persons in the cockpit when performing an engine run above idle. One must monitor the outside and the aircraft behaviour while the other performs the engine test.
(4) If the aircraft begins to move while performing an engine run, immediately set all the thrust levers to idle position.
(5) On the landing gear control and indicating panel 402VU:
(a) Make sure that the A/SKID and N/WSTRG selector switch 5GG is ON.
(6) On the RUD TRIM/PARKING BRK panel 110VU:
(a) Make sure that the parking brake control switch is set to ON.
(7) On the air conditioning panel 30VU, make sure that the engine bleed valves are off (the OFF legend is on).

Subtask 71-00-00-865-191-A ** ON A/C NOT FOR ALL

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

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	L/G/LGCIU/SYS1/NORM	1GA	C09
121VU	HYDRAULIC/LGCIU/SYS2	2GA	Q35
121VU	HYDRAULIC/LGCIU/SYS1/GRND SPLY	52GA	Q34

4. Procedure
Subtask 71-00-00-710-265-A ** ON A/C NOT FOR ALL

A. For engine operation at 35 percent N1, 50 percent N1, or 60 percent N1 perform the following:
(1) Start the tested engine (Ref. AMM TASK 71-00-00-860-823).

NOTE: This is the recommended start method for normal conditions.

(2) As an option, start the engine by the manual start procedure (Ref. AMM TASK 71-00-00-860-822).

NOTE: It is recommended to use the manual start procedure at all high altitude airports.

NOTE: It is recommended that you use the manual start procedure for starts with low starter air pressure supply (external pneumatic power source).

(3) Make sure the engine temperature becomes stable for five minutes at minimum idle.
(4) For the engine being tested, do a slow acceleration to 35 percent N1, 50 percent N1 or 60 percent N1 and let the engine become stable for five minutes.
(5) Decelerate slowly to idle power and let the engine become stable for ten minutes.

Subtask 71-00-00-710-268-A ** ON A/C NOT FOR ALL

B. For engine operation at 80 percent N1, perform the following:
(1) Make sure that a total of 6614 lb (3000.06 kg) (minimum) of fuel are in inner tanks.

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 tanks at the end of the test.

(2) Start both engines (Ref. AMM TASK 71-00-00-860-823) or (Ref. AMM TASK 71-00-00-860-822).
(3) Make sure the engine temperature becomes stable for five minutes at minimum idle.
(4) For the engine NOT being tested, do a slow acceleration to 50 percent N1.
(5) Push and hold the brake pedals at the full limit position.
(6) On the RUD TRIM/PARKING BRK panel 110VU:
(a) Make sure that the parking brake control switch is set to ON.
(7) For the engine being tested, do a 30 second acceleration from idle to 80 percent N1 and hold for a maximum of ten seconds.

NOTE: Speed will not be a constant rate with constant throttle movement by rating flats.

(8) Decelerate slowly both engines to idle power:
(a) Release the brake pedals.
(b) Let both engines become stable for ten minutes.

Subtask 71-00-00-860-245-A ** ON A/C NOT FOR ALL

C. Ground Scanning Report
(1) Shut down both engines (Ref. AMM TASK 71-00-00-860-814).
(2) Check on MCDU screen, on Ground Scanning Report to confirm faults or repair of faults (Ref. AMM TASK 31-32-00-860-012).

5. Close-up
Subtask 71-00-00-869-379-A ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the 98F10103500000 CHOCK-MLG,ENGINE RUN-UP.

[Rev.10 from 2021] 2026.04.01 12:57:04 UTC