Message Name:

STARTING ANOMALY

This procedure is to find the root cause for unsatisfactory on-ground engine starts in manual and or normal (Autostart) mode.

NOTE: The engine start procedure is continuously monitored by the Full-Authority Digital Engine-Controller (FADEC) system.

NOTE: The Engine Electronic Controller (EEC) protects the engine against over-temperature during engine starting in normal (Autostart) mode only.

• Ignition System
• Air Turbine Starter (ATS)
• Starter Air Valve (SAV)
• Fuel Metering Unit (FMU)
• Heater/Brake Valve (HBV)
• N2 Speed Probe
• Left Engine Electronic Controller (EEC)
• Right Engine Electronic Controller (EEC)

Advisory Wire/Service Bulletin:

• Rolls Royce Notice To Operators (NTO) NTO 182 - Fault Isolation for On-Ground Starting Issues

Forum Articles/Infoservice/Newsletter: None

1. Access CAIMS active or stored faults and select displayed message from menu below:
   - Select CAIMS Message -7325727LBR - L ITT SIGNAL WRG XCK7325727RBR - R ITT SIGNAL WRG XCK7326120LBR - L SAV FAILURE7326120RBR - R SAV FAILURE7326320LBR - L FMU [HPSOV]7326320RBR - R FMU [HPSOV]7327327LBR - L N2 SPEED WRG/PROBE SHARED RNG MA7327327RBR - R N2 SPEED WRG/PROBE SHARED RNG MA7326214LBR - L HIGH TENSION IGNITION [1]7326214RBR - R HIGH TENSION IGNITION [1]7326215LBR - L HIGH TENSION IGNITION [2]7326215RBR - R HIGH TENSION IGNITION [2]7326216LBR - L CH A LOW TENSION IGNITION[1] RNG7326216RBR - R CH A LOW TENSION IGNITION[1] RNG7326217LBR - L CH B LOW TENSION IGNITION[1] RNG7326217RBR - R CH B LOW TENSION IGNITION[1] RNG7326218LBR - L CH A LOW TENSION IGNITION [2] RNG7326218RBR - R CH A LOW TENSION IGNITION [2] RNG7326219LBR - L CH B LOW TENSION IGNITION [2] RNG7326219RBR - R CH B LOW TENSION IGNITION [2] RNG7326123LBR - L EEC RESET DISCRETE WRG7326123RBR - R EEC RESET DISCRETE WRG7327315LBR - L SAV CH B SUPPLY FAILURE7327315RBR - R SAV CH B SUPPLY FAILURE

If error code not present, or a decreasing/stagnating N2/HP shaft speed, high TGT, audible surge/stall/rumbling noise is observed during engine starting, then follow the troubleshooting recommendations below.

In auto start mode the engine fails to start and illuminates the AUTOSTART ABORT amber CAS message. There was no decreasing/stagnating N2/HP shaft speed, high TGT, audible surge/stall/rumbling noise noted during start.

1. Is the AUTOSTART ABORT amber CAS message present on the EICAS after the failed auto start?

   1. If NO, go to step 3.
   2. If YES, continue with next step.

2. Is there any FADEC faults?

   1. If NO, continue with next step.
   2. If YES, carry out the relevant SFP troubleshooting.

3. Was the N2 speed more than 20 percent?

   1. If NO, go to step 10.
   2. If YES, continue with next step.

4. Did you have fuel flow present?

   1. If YES, go to step 7.
   2. If NO, continue with next step.

5. Check the position of the aircraft fuel shut-off valve and fire handle.

   1. If shut off valve and fire handle are not good, repair as required and continue with next step.
   2. If shut off valve and fire handle are good, continue with next step.

6. Check for 28 VDC on the FMU aircraft start coil (connector P712).

   1. If there is 28 VDC, go to step 11.
   2. If there is no 28 VDC, repair as required and continue with next step.

7. Was the ignition light OFF?

   1. If the ignition light was OFF, go to step 9.
   2. If the ignition light was ON, continue with next step.

8. Check for 28 VDC on the power supply to the exciter unit.

   1. If there is 28 VDC, continue with next step.
   2. If there is no 28 VDC, repair as required and continue with next step.

9. Was a second or third or manual start successful?

   1. If YES, check the high-side Ignition System (exciter, igniter plugs, operational test, per EMM 74-20-02-710-801) Also During engine start, push the Pilot Event Marker (PEM) button @ app. 15% N2. Download the IAC exceedance file (xxx.exc) and contact Rolls Royce.
   2. If every other start was successful, swap the EECs between the engines per (EMM 73-21-01-000 (400)-801) and during engine start, push the Pilot Event Marker (PEM) button @ app. 15% N2. Download the IAC exceedance file (xxx.exc) and contact Rolls Royce.
   3. If every other start was not successful, was there Intermittent OR no pattern AND/OR high TGT, audible surge/stall, rumbling noise? Go to second fault anomaly troubleshooting recommendations.
      NOTE: The EEC will flag a maintenance message that points to faulty ignition system ONLY if the EEC aborted the AUTO START.

10. Was the manifold pressure greater than 35 PSIA?

    1. If there was not sufficient manifold pressure, correct the pressure problem.
    2. If there was sufficient manifold pressure, check the starter air valve (SAV) and air turbine starter (ATS).

11. Replace the FMU per (EMM 73-21-03-000 (400)-801).
12. Do close out.

In auto start mode the engine fails to start and illuminates the AUTOSTART ABORT amber CAS message. There was decreasing/stagnating N2/HP shaft speed, high TGT, audible surge/stall/rumbling noise also noted during start.

1. When starting anomaly in the starting sequence occur?

   1. If at 45 percent N2/HP, go to step 12.
   2. If at 52 percent N2/HP, continue with next step.

2. Did this only happen on the first start of the day?

   1. If NO, go to step 4.
   2. If YES, continue with next step.

3. Carry out an extended dry crank (app. 30 seconds) prior to every engine start (rotor bow prevention).

   1. If the problem is not evident, contact Rolls Royce.
   2. If the problem is still evident, continue with next step.

4. Visually examine the VSV/VIGV linkage, rods, drive brackets and levers for damage/correct installation.

   1. If damage or defect is found, rectify or repair as required and do close out.
   2. If no damage or defect is found, continue with next step.

5. Check if it is a NFF.

   1. If NO, contact Rolls Royce.
   2. If YES, continue with next step.

6. Swap N2 shared speed probe plug on the AGB with IOP channel A or B probe plug.

   1. If system checks are good, replace N2 shared speed probe plug on the AGB and do close out.
   2. If fault remains, continue with next step.

7. Measure the HP/N2 run-down time, FCS to OFF until zero indication on EICAS.

   1. If it is less than 80 seconds, contact Rolls Royce.
   2. If it is not less than 80 seconds, continue with next step.

8. Perform a functional check of all the HBVs. Are all of the HBVs free to move?

   1. If NO, replace the applicable HBVs and continue with next step.
   2. If YES, replace the BVSB and stages 5.1, 5.3 and 8 HBVs and continue with next step.

9. Is the problem is still evident?

   1. If NO, do close out.
   2. If YES, continue with next step.

10. Carry out a BSI of the HPC per (EMM 72-00-00-200-801). Did the BSI reveal findings within tolerance of the maintenance manual?

    1. If NO, contact Rolls Royce.
    2. If YES, continue with next step.

11. Start the suspect engine with the TAI valve selected OPEN. Is then problem still evident?

    1. If YES, contact Rolls Royce.
    2. If NO, do close out.

12. Comply with a functional check of all the HBVs. Are all of the HBVs free to move?

    1. If NO, replace the suspect HBVs and continue with next step.
    2. If YES, replace the BVSB and stages 5.1, 5.3 and 8 HBVs and continue with next step.

13. Is the problem is still evident?

    1. If NO, do close out.
    2. If YES, carry out a BSI of the HPC per (EMM 72-00-00-200-801).

14. Did the BSI reveal findings within tolerance of the maintenance manual?

    1. If NO, contact Rolls Royce.
    2. If YES, continue with next step.

15. Start the suspect engine with the TAI valve selected OPEN. Is the problem still evident?

    1. If YES, contact Rolls Royce.
    2. If NO, do close out..

16. Do close out.