Procedure After Engine Surge or Stall (No Overtemperature) [IAE]

TASK 71-00-00-710-019-B
Procedure After Engine Surge or Stall (No Overtemperature)

1. Reason for the Job
This TASK is for V2500-A5 engines.
2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TASK 71-00-00-700-016-A	Procedure for a Bowed Rotor Start Prevention
TASK 71-00-00-710-045-A	Test No.1 : Dry Motor Leak Check
TSM 71-00-00-810-808	Surge or Stall on Engine 1
TSM 71-00-00-810-809	Surge or Stall on Engine 2

3. Job Set-up
Subtask 71-00-00-869-242-A ** ON A/C NOT FOR ALL

A. Not Applicable

4. Procedure
Subtask 71-00-00-710-154-A ** ON A/C NOT FOR ALL

A. Procedure After Engine Surge or Stall

CAUTION: IF YOU DO NOT OBEY THE INSTRUCTIONS THAT FOLLOW, DAMAGE TO THE ENGINE CAN BE THE RESULT.

(1) If there is an engine surge or stall and EGT is usual, do the steps which follow:
(a) Quickly and immediately move the thrust lever to MIN IDLE STOP.
(b) Operate the engine for five minutes at MIN IDLE and continue usual operation.
(2) If there is an engine surge or stall and EGT is above usual, do the steps which follow:
(a) Quickly and immediately move the thrust lever to MIN IDLE STOP.
(b) On the ENG PNL 115VU:
Set the ENG/MASTER switch 1(2) to OFF. The HP fuel valve will close immediately.
(3) Dry motor

CAUTION: YOU CAN ENGAGE STARTER MOTOR WHEN N2 IS LESS THAN 10 PER CENT. IF YOU ENGAGE STARTER MOTOR AT MORE THAN 10 PERCENT N2 SPEED CAN CAUSE DAMAGE TO THE STARTER.

(a) Dry motor the engine for a minimum of 30 seconds but not more than two minutes to remove caught fuel and to decrease the EGT below 250 deg.C (482 deg.F) (Ref. AMM TASK 71-00-00-710-045).
(b) Complete Troubleshooting for Surge/Stall TSM 71-00-00-810-808 or TSM 71-00-00-810-809.
(c) Before you start the engine refer to the procedure for a bowed rotor start prevention after an emergency shutdown (Ref. AMM TASK 71-00-00-700-016).
(4) If there is an engine surge or stall where the EGT increases quickly, the rotor speeds decrease suddenly, and the engine operation will not follow thrust lever movement, do the steps which follow:
(a) Move the thrust lever to MIN IDLE STOP.
(b) On the ENG PNL 115VU:
Set the ENG/MASTER switch 1(2) to OFF. The HP fuel valve will close immediately and stop the fuel flow to the engine.
(c) At 10 percent N2, dry motor the engine, continue to dry motor the engine at 20 percent N2 until the EGT has decreased below 250 deg.C (482 deg.F) or for two minutes, whichever is reached first.
(d) Complete Troubleshooting for Surge/Stall TSM 71-00-00-810-808 or TSM 71-00-00-810-809.
(e) Before you start the engine refer to the procedure for a bowed rotor start prevention after an emergency shutdown (Ref. AMM TASK 71-00-00-700-016).

Subtask 71-00-00-710-155-A ** ON A/C NOT FOR ALL

B. Procedure After Crew Report of Engine Inflight Surge or Stall (No Overtemperature) with 'Ignition On' message with no Stall Warning
(1) Complete Troubleshooting for Surge/Stall TSM 71-00-00-810-808 TSM 71-00-00-810-809.

Subtask 71-00-00-710-156-A ** ON A/C NOT FOR ALL

C. Procedure After Crew Report of Engine Inflight Surge or Stall (No Overtemperature) with 'Ignition On' message and Stall Warning
(1) Complete Troubleshooting for Surge/Stall TSM 71-00-00-810-808 or TSM 71-00-00-810-809.

[Rev.10 from 2021] 2026.04.01 02:28:04 UTC