DMC:V2500-A5-71-00-0000-01B-133A-B|Issue No:001|Issue Date:2014-05-01

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-A5

Common Information

TASK 71-00-00-700-059-B00 Procedure For An Emergency Shutdown, Testing-000

Procedure For Emergency Shutdown for Engines with Less than Two Hours of Operation Time Since Overhaul of HP Rotor Blade Tip Seals

Procedure

Quickly and immediately move the thrust lever to IDLE.

Select the FUEL OFF mode.

Engage the starter below 1495 RPM (10%) to continue engine rotation.

Motor the engine at more than 2500 N2 RPM until the EGT decreases below 482 deg F (250 deg C) or for two minutes, whichever is reached first.

Before you start the engine again, refer to procedure for a Bowed Rotor Start Prevention after Emergency Shutdown. Refer to TASK 71-00-00-700-065-B00 (TESTING-000, CONFIG-002).

Start the engine again in less than 15 minutes by the instructions given in Normal Engine Automatic Start Procedure (Refer to TASK 71-00-00-700-053-B01) (TESTING-000, CONFIG-002) or Normal Engine Manual Start Procedure (Refer to TASK 71-00-00-700-053-B02) (TESTING-000, CONFIG-002).

Keep the power at APPROACH IDLE for 15 minutes before you move the thrust lever forward. Normal operation can continue after 15 minutes at APPROACH IDLE.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

CAUTION

IF YOU DO NOT DO THIS PROCEDURE, DAMAGE TO THE HP ROTOR BLADE TIP SEALS CAN BE THE RESULT.

CAUTION

DO NOT TRY TO START AN ENGINE THAT HAS AN N2 ROTOR THAT IS LOCKED. THE HP ROTOR BLADE TIP SEALS CAN BE DAMAGED.

CAUTION

DO NOT START NEWLY OVERHAULED ENGINES WITH HP COMPRESSOR BLADE TIP CLEARANCES THAT ARE NOT WORN AFTER AN EMERGENCY SHUTDOWN. THIS CAN CAUSE AN ECCENTRIC RUB PATTERN OF THE HP COMPRESSOR BLADE TIP SEALS. THIS IS CAUSED BY A THERMALLY BOWED ROTOR BECAUSE OF HEAT BUILD-UP IN THE 15 MINUTES THAT FOLLOW AN EMERGENCY SHUTDOWN. THIS ECCENTRIC RUB PATTERN CAN CAUSE UNSATISFACTORY ENGINE PERFORMANCE AND STABILITY.

Procedure

Requirements After Job Completion

Follow-On Conditions

NONE