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C-20B MWLP

  1. Master Warning Light Panel

    L/R OIL PRESS
    Oil pressure < 15 psi

    • 1. Check Gauge & Throttle position
    • 2. Advance throttle to restore pressure
    • 3. If pressure can't be restored within limits - Shut down engine
  2. Master Warning Light Panel

    L/R ENG HOT
    Cooling Air > 860° F

    • BOLDFACE (On Ground)
    • 1.  THROTTLE - IDLE      P
    • 2.  FUEL COCK - SHUT    P
  3. Master Warning Light Panel

    GND SPOILER
    • INFLIGHT
    • 1. 1 or both Ground Spoiler Panels extended w/ Speed Brake not EXTENDED
    • 2. Primary Control Valve failure
    • 3. Secondary Control Valve failure
    • 4. Primary or Secondary Nutcracker Relay failure

    • ON GROUND
    • 1. Primary Control Valve failed w/ throttles out of Idle
    • 2. Unlocked Ground Spoilers w/ throttles at Take Off Power

    • 1. Ground Spoiler Switch OFF
    • 2. Pull Ground Spoiler CB (P, C9)
  4. Master Warning Light Panel

    REV UNLOCK
    Thrust Reverser Overcenter Links have moved Overcenter towards Deploy position

    • 1. Throttle - Idle
    • 2. Reverser Lever - Stow
    • 3. Reverser Switch - Restow
  5. Master Warning Light Panel

    L/R FUEL PRESS
    Fuel pressure < 15 psi at inlet of HP Pump

    • Due to:
    • 1. Boost Pump failure
    • 2. Crossflow and Boost Pump mismanagement
    • 3. Fuel Leak

    Check Boost Pumps & Crossflow Valve
  6. Master Warning Light Panel

    L/R PYLON HOT
    Pylon Air > 325° F

    Possible Bleed Air leak

    • BOLDFACE
    • 1.  BLEED AIR SWITCHES - OFF    P
  7. Master Warning Light Panel

    AFT EQUIP HOT
    Aft Equipment Compartment temperature > 200° F

    • Possible that
    • 1. HP Duct has blown off
    • 2. Fire is in progress

    • BOLDFACE
    • 1.  BLEED AIR SWITCHES - OFF    P
  8. Master Warning Light Panel

    CABIN DOORS
    Main and/or Baggage Door Not Locked

    • Reduce Cabin Pressure Differential
    •    - Cabin Altitude < 10,000 Feet
  9. Master Warning Light Panel

    CAB PRESS LO
    Cabin Altitude > 9,250 ±750 Feet

    • 1. Check Cabin Pressure Indicator and Controls
    • 2. Descend as Necessary
    • 3. Use Oxygen as Appropriate
    • 4. Select Emergency Pressurization
  10. Master Warning Light Panel

    CABIN PRES MAN
    Pressure Controller in Manual Mode

    • Occurs if:
    • 1. AUTO/MAN Switch to MANUAL
    • 2. Depressurization Rate Limiting Occurs
    • 3. Phase A CB on PDB is open
    • 4. Battery only operation
  11. Master Warning Light Panel

    L/R FUEL FILT
    Fuel filter clogged and DP of .3 across filter is sensed

    • Shut down engine if FUEL FLOW begins to FLUCTUATE
  12. Master Warning Light Panel

    L/R BLEED HT
    Bleed Air after Precooler > 550° F

    • Turn Affected Side Bleed Air Switch OFF
  13. Master Warning Light Panel

    BATT SW OFF
    BATT 1 and/or BATT 2 Switch is Off
  14. Master Warning Light Panel

    CAB OXY ON
    • Cabin Altitude > 13,500 Feet
    • Oxygen Masks Deployed
  15. Master Warning Light Panel

    BLEED PRESS
    Bleed Air > 90 psi

    Probably a failure of a HP regulator valve

    • Select Bleed Air Switch OFF for Engine w/ Lowest EPR & Highest TGT
  16. Master Warning Light Panel

    FUEL LOW LVL
    Fuel in Either Fuel Hopper is < approximately 700 lbs

    • Ensure Boost Pumps - ON
  17. Master Warning Light Panel

    L/R CONV HT
    Converter Temperature > 220° F

    • Power Master Switch - OFF
  18. Master Warning Light Panel

    AV INV 1 FAIL
    • 1. Avionics Inverter #1 Failed
    • Or
    • 2. Essential DC Power Loss

    • Equipment now powered by Essential AC Bus
  19. Master Warning Light Panel

    AV INV 2 FAIL
    • 1. Avionics Inverter #2 Failed
    • Or
    • 2. Right Main DC Bus Power Loss

    Equipment now powered by Right Main AC Bus
  20. Master Warning Light Panel

    L/R DC PWR
    DC Converter Output Offline

    • Power Master Switch – OFF / ON
  21. Master Warning Light Panel

    L/R ALTNTR HT
    Alternator Case Temperature > 250° F

    • Power Master Switch for respective alternator - OFF
  22. Master Warning Light Panel

    L/R PITOT HT
    Pitot Heat not Energized
  23. Master Warning Light Panel

    L/R AC PWR
    AC Converter Output Offline

    Power Master Switch - OFF/ON
  24. Master Warning Light Panel

    T/R HT
    Transformer Rectifier Temperature > 374° F

    • 1. Check Cooling Fan Screen
    • 2. Reduce L/R DC load to < 250 amps
  25. Master Warning Light Panel

    APU ALT HT
    APU Alternator Case Temperature > 300° F

    Aux Power Master Switch - OFF
  26. Master Warning Light Panel

    TONE GEN
    Tone Generator Failed
  27. Master Warning Light Panel

    TRANS/RECT
    Transformer Rectifier Selected ON but there is not TRU Output

    Ensure L/R Main AC Bus is powered
  28. Master Warning Light Panel

    AUX AC PWR
    AUX/APU Power Source Offline

    Aux Power Switch OFF then ON
  29. Master Warning Light Panel

    COMB HYD HT
    Combined Hydraulic Fluid Temperature > 220° F

    Proceed w/ flight, investigate after landing
  30. Master Warning Light Panel

    FLT HYD HT
    Flight Hydraulic Fluid > 200° F

    Proceed w/ flight, investigate after landing

    - If Utility Hydraulic System is needed, Flight Hydraulic System Switch must be in OVERRIDE
  31. Master Warning Light Panel

    AUX MASTER WARN CB
    • Loss of Power to:
    • 1. 1 or more of the 16 AUX MAST WARN CBs
    • 2. Either Master Warning 1 or 2 Power CBs

    Check CBs (P, L2 & M2)
  32. Master Warning Light Panel

    EPMP PS
    • 1 of the 4 Power Sources has failed:
    • 1. EDC Bus (2)
    • 2. BATT 1
    • 3. BATT 2

    Check CBs (CP, F3 & F4)
  33. Master Warning Light Panel

    COMB HYD
    Combined Hydraulic System Pressure < 800 psi

    • No Fluid Loss:
    • Check Flight Hydraulic System pressure at 3000 psi (if not, pull Flight Hyd CB (P, B9))

    • Fluid Loss:
    • 1. If flaps suspected, pull Manual Flap Control CB (P, G9)
    • 2. Check Flight Hydraulic System pressure at 3000 psi (if not, pull Flight Hyd CB (P, B9))
  34. Master Warning Light Panel

    FLT HYD
    Flight Hydraulic System Pressure < 800 psi

    Check Combined Hydraulic System pressure at 3000 psi (if not pull Combined Hyd CB (P, D10))
  35. Master Warning Light Panel

    AUX HYD HT
    Aux Hydraulic System Case Temperature > 300° F

    Limit use of pump
  36. Master Warning Light Panel

    RADIO RACK HT
    Radio Rack Area Temperature > 200° F

    Check Cooling Fan Screen
  37. Master Warning Light Panel

    STAB-FLAP
    Flaps Up, Stab is Not

    Refer to Stab/Flap Interconnect Failure
  38. Master Warning Light Panel

    TRIM OFF
    Electric Trim Inoperable

    Check Pitch Trim Switch
  39. Master Warning Light Panel

    ANTI-SKID
    System Failure

    Anti-Skid Switch OFF then ON

    • On Ground:
    • 1. MIN EPR Take Off
    • 2. Anti-Ice OFF (Eng & Wing)
    • 3. Flaps 20° Take Off
    • 4. Adjust TOLD
    • 5. Ground Spoilers Operable
    • 6. Switch - ON for Take Off / OFF for Taxi
  40. Master Warning Light Panel

    UTIL HYD OFF
    Switch is Off

    Set to NORMAL or OVERRIDE as required
  41. Master Warning Light Panel

    L/R WING HT
    Wing Anti-Ice Duct Temperature > 180° F

    Affected side Wing Anti-Ice Switch OFF & time for 2 minutes
  42. Master Warning Light Panel

    STALL BARR VLV NO 1/2
    Respective Stall Barrier Valve is Open

    • 1. Press and Hold Autopilot Disconnect Button
    • 2. Turn Stall Barrier Switch OFF
  43. Master Warning Light Panel

    L/R MAIN FUEL
    Main Boost Pump Failure (< 15 psi)

    Select Alternate Boost Pump ON
  44. Master Warning Light Panel

    COOL TURB HT
    Discharge Temperature of the Turbine Cooling Compressor > 400 ± 15° F

    • Inflight - Manually shutdown AC System
    • 1. CABIN PRESS Switch EMER
    • Or
    • 2. CABIN AIR Switch RAM
  45. Master Warning Light Panel

    BATT ON BUS
    Essential DC Bus on Battery Power

    Verify Left and/of Right Main DC Buses are powered
  46. Master Warning Light Panel

    SERVICE DOOR
    • Fuel, Lav, Water or Aft Equipment Door Unlocked
    • Check security of all doors on the ground
  47. Master Warning Light Panel

    L/R ALT FUEL
    • Alternate Boost Pump Failed
    • Select Main Boost Pump - ON
  48. Master Warning Light Panel

    L/R CONV FAILED FAN
    Converter cooling fan has failed (1 out of 5 fans)

    • Record the time (25 hours allowed with 1 fan out)
  49. Master Warning Light Panel

    FLT RECORD
    Recorder Inoperable

    Check CB (CP, B7)
Author
blademjr
ID
189652
Card Set
C-20B MWLP
Description
C-20B Master Warning Light Panel
Updated

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