Engine Wash And Emergency Procedures

Question 1

Engine Wash Limitations

Answer 1

• TGT below 80° C (151° C if ENG OVSPD CIRCUIT BREAKERS ARE PULLED)
• Minimum NG 24% prior to inducing water
• Minimum NG while washing 16% (7,000 RPM) to prevent damage to compressor blades
• Rinse #2 engine for 65 seconds, #1 for 60 seconds
• Dry engines for 5 minutes, secure anti ice and dry for 1 additional minute
• Do not rinse engine if below -15° C (5°F), solution will freeze

Question 2

APU Oil Temp High

Answer 2

1. Secure APU CONT switch
2. Complete shutdown procedure
3. Check oil level after 60 minutes:
   -If oil level is within limits, restart APU
   -If oil level is low, troubleshoot APU

Question 3

APU Compartment Fire

Answer 3

1. (Symptoms) Engine fire warning T-handle light on, FIRE Master Caution light, or fire emanating from APU compartment area
2. Confirm presence of fire with fire guard
3. Pull APU Fire T-handle
4. FIRE EXT SWITCH to RESERVE
   -If fire persists:
5. Discharge portable fire extinguisher
6. If fire continues after discharging portable fire extinguisher, evacuate aircraft

Question 4

Engine Abort Start Procedure

Answer 4

1. Secure affected ENG POWER CONT lever
2. Secure ignition switch
3. Engage affected engine starter for 30 seconds
4. Disengage starter

Question 5

Engine Starter Does Not Drop Out

Answer 5

1. Disengage affected engine starter
   -If condition persists:
2. Pull affected engine START CONTROL circuit breaker
   -If condition persists:
3. Secure APU CONT switch

Question 6

Internal Engine Fire

Answer 6

-(Symptoms) TGT exceeds 851° C during startup or 540° C during shutdown
1. Secure both ENG POWER CONT levers
2. Secure ignition switch
3. Engage affected engine starter until TGT is below 300° C
-Once fire is extinguished:
4. Disengage starter
-If fire persists:
5. Discharge fire extinguisher into affected engine air intake
6. If fire continues after discharging portable fire extinguisher, evacuate aircraft

Question 7

External Engine Fire

Answer 7

1. Confirm presence of fire with fire guard
2. Secure both ENG POWER CONT levers
3. Pull affected ENG FIRE T-Handle
4. FIRE EXT switch to MAIN and/or RESERVE
   -If fire persists
5. Discharge portable fire extinguisher
6. If fire continues after discharging portable fire extinguisher, evacuate aircraft

Question 8

Rotor Brake Slip

Answer 8

1. Secure both ENG POWER CONT levers
2. Maintain rotor brake position

Question 9

Ignition Off Start Attempt

Answer 9

-DO NOT place ignition switch on until abort start procedures have been completed. If ignition switch is placed on while start is in progress, possible hot or torching start can occur

Question 10

Starter Light Goes Out Before Reaching 52%NG

Answer 10

-DO NOT reengage starter due to a possible engine over temp

Question 11

Engine Doesn’t Light Off After 30 Seconds

Answer 11

-Fuel flow must be stopped IMMEDIATELY to prevent engine over temp. Perform an abort procedure
1. ENG PCL OFF
2. ENG ignition switch off
3. Motor engine starter for 30 seconds to purge fuel from engine
4. Monitor for post shutdown fire

Question 12

Warnings Following An Aborted Start Attempt

Answer 12

-Wait at least 2 MINUTES after APU shuts down before attempting a restart. Have fireguard check APU fuel drain line. Do not restart until fuel drainage has stopped or fire may result.

Question 13

Engine Start Limitations

Answer 13

-EDECU Torque Indicators: 35% (+/- 3%)
-Advance PCL to Ground Idle: 14% NG
-Engine Light Off: Audible tone within 30 seconds
-Oil Pressure: Increases within 30 seconds, 22 to 55 PSI
-Starter Dropout: 52% to 65% NG
-TGT: Does not rise above 851° C
-Engine NG’s: SHALL match within 3%