DMC:V2500-A1-71-00-0000-02B-364A-B|Issue No:001|Issue Date:2013-11-01

Export Control

EAR Export Classification: Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3), except for the following Service Bulletins which are currently published as EAR Export Classification 9E991: SBE70-0992, SBE72-0483, SBE72-0580, SBE72-0588, SBE72-0640, SBE73-0209, SBE80-0024 and SBE80-0025.

Copyright

© IAE International Aero Engines AG (2001, 2014 - 2021) The information contained in this document is the property of © IAE International Aero Engines AG and may not be copied or used for any purpose other than that for which it is supplied without the express written authority of © IAE International Aero Engines AG. (This does not preclude use by engine and aircraft operators for normal instructional, maintenance or overhaul purposes.).

Applicability

V2500-A1

Common Information

TASK 71-00-00-700-003-A00 Test No. 3 (A1) - Idle Leak Check, Testing-003

General

Instructions to operate the engine, engine safety precautions, and other general information are found in Engine Safety Precautions and Engine Operation Limits, Guidelines, and Special Precautions. Refer to TASK 71-00-00-700-050-A00 (TESTING-000, CONFIG-001) and TASK 71-00-00-700-051-A00 (TESTING-000, CONFIG-001).

You can use this test to do an inspection of the fuel and oil systems for leaks after you replace a component or module or for a functional check of the 7th or 10th stage bleed valve/solenoid after replacement.

NOTE

Operate the engine at MIN IDLE only for this test except when a change of a 7A bleed valve or solenoid has been done on an engine equipped with EEC software below SCN12C where the engine will be required to operate at 1.25 EPR. Refer to TASK 71-00-00-700-052-A00 (TESTING-000, CONFIG-001).

NOTE

If you must do a check of the electronic engine control you can do Test No.6 the Electronic Engine Control (EEC) System Idle Test at this time. Refer to TASK 71-00-00-700-006 (TESTING-006).

NOTE

If you see oil wetness from the No. 4 bearing compartment weep tube exit at the bottom of the turbine exhaust case, and you see the wetness after consecutive starting cycles, do the dry out procedure that follows before you advance the TLA above idle power.

Run the engine at Approach Idle for 20 minutes
Inspect the No. 4 bearing compartment weep tube exit at the bottom of the turbine exhaust case for signs of oil. If you see wetness, contact IAE for instructions

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

WARNING

MAKE SURE THAT YOU OBEY THE PRECAUTIONS THAT ARE GIVEN FOR PERSONS TO OPERATE AN ENGINE SAFELY. INJURY CAN RESULT IF YOU DO NOT OBEY THESE PRECAUTIONS. REFER TO TASK 71-00-00-700-050-A00 (TESTING-000, CONFIG-001).

Procedure

1. Do the necessary steps by the instructions in Pre-Rig the Engine for Testing. Refer to TASK 71-00-00-700-020 (TESTING-020).
2. Open the slave nacelle system ducts and make sure they are held open during engine operation.
3. Start the engine by the instructions given for an automatic or manual engine start. Refer to the Normal Engine Automatic Start Procedure or the Normal Engine Manual Start Procedure, TASK 71-00-00-700-053-A01 (TESTING-000, CONFIG-001) and TASK 71-00-00-700-053-A02 (TESTING-000, CONFIG-001).
4. Do not continue to operate the engine if any indications are unusual.
5. Do an inspection of the engine for leaks.
6. Do a shutdown by the Discontinued Start and Shutdown Procedures. Refer to TASK 71-00-00-700-054-A00 (TESTING-000, CONFIG-001).
7. Do an inspection of the engine for leaks.
8. Correct the leaks and do the test again as necessary.
9. If more tests are to be done, close the slave nacelle system ducts.
10. Do the necessary steps by the instructions in De-Rig the Engine after Testing. Refer to TASK 71-00-00-700-021 (TESTING-021).

Requirements After Job Completion

Follow-On Conditions

NONE