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← T T T 1 ISOLATION EESOURCE E MESSAGE E ATA ECE PROCEDURE E十 十 十 十 十 1EEIU2FADEJ2, 115 VAC, ECU ENG2B E715100E1E715000 P 254EE E E E ET 810 827 E十 十 十 十 十 1 EEIU2FADEJ3 (INSTINCT DISC) ENG2AE715100ESE715000 P 227E E E E E ET 810 810 E十 十 十 十 十 1 EEIU2FADEJ3 (INSTINCT DISC) ENG2BE715100ESE715000 P 243E E E E E ET 810 823 E十 十 十 十 十 1EEIU2FADEJ3, ADC1 ENG2A E715100E3E715000 P 235EE E E E ET 810 814 E十 十 十 十 十 1EEIU2FADEJ3, ADC1 ENG2B E715100E3E715000 P 259EE E E E ET 810 829 E十 十 十 十 十 1EEIU2FADEJ4, ADC2 ENG2A E715100E3E715000 P 239EE E E E ET 810 816 E十 十 十 十 十 1EEIU2FADEJ4, ADC2 ENG2B E715100E3E715000 P 263EE E E E ET 810 831 E十 十 十 十 十 1EEIU2FADEJ5, TR ACFT SW, ECU E715100E1E715000 P 216EE E E E ET 810 806 E十 十 十 十 十 1EEIU2FADEJ6, TR ACFT SW, ECU E715100E1E715000 P 222EE E E E ET 810 808 E1 1 1 1 1 E
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 POWER PLANT - GENERAL - FAULT ISOLATION PROCEDURES

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 TASK 71-00-00-810-802
 Smoke and/or Oil Smell in the Cabin
 1. Possible Causes
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 - stationary air oil seals in the forward sump

 - static seals in the forward sump

 2. Job Set-up Information
______________________
 A. Referenced Information
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REFERENCE  DESIGNATION
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AMM 21-00-00-615-003  Decontamination of the Environmental Control System (ECS) when the Temperature is below 24 deg.C (Engine/s)
 AMM 21-00-00-615-004  Decontamination of the Environmental Control System (ECS) when the Temperature is above 24 deg.C (Engine/s)
 AMM 71-00-00-710-006 Minimum Idle Check R AMM 71-00-00-790-002 Fuel or Hydraulic or Oil Leakage Limits AMM 72-31-00-290-002 Inspection of the High Pressure Compressor Rotor Assembly AMM 75-31-60-000-002 Removal of the Bleed Valve and Ballscrew Actuator Assembly AMM 75-31-60-400-002 Installation of the Bleed Valve and Ballscrew Actuator Assembly
 3. Fault Confirmation
__________________
 A. Not applicable, the fault is evident.
 4. Fault Isolation
_______________
 A. If the fault symptom is identified by the crew observation smoke and/or smell in the cabin from the engine:
 NOTE : The fault can be due to deffective stationary air oil seals in the
____ forward sump or static seals in the forward sump.
 - do a minimum idle check (Ref. AMM TASK 71-00-00-710-006) for 15 minutes at minimum idle.

 - check for oil drops or smoke coming out of the forward sump drain, during the engine operation (Ref. AMM TASK 71-00-00-790-002).

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 (1) Do a borescope inspection of the HP compressor stage No.1 and No.2 blades through the S1 and S2 inspection ports (Ref. AMM TASK 72-31-00-290-002). Check for oil wetting.

 (2) Check for presence of oil wetting at the 6 O'clock position of the booster inlet (IGV).

 (3) Check for presence of oil wetting inside the two lower forward sump pressurizing tubes.

 (a) remove one of the bleed valve and ballscrew actuator assembly at the 4 or 8 O'clock position (Ref. AMM TASK 75-31-60-000-002).

 (b) get your hand through the VBV door opening to access to the inlet of the forward sump pressurization tube.

 (c) check with the finger tip for presence of oil wetting.

 NOTE : If the access is too difficult, use a flexible borescope.
____
 (d) install the bleed valve and ballscrew actuator assembly (Ref. AMM TASK 75-31-60-400-002).
　
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