Bell 412 BOLDFACE Cx's

  1. FIRE during start
    • Throttles(idle/shut)
    • T handle ID / Pull
    • Fire Main
    • if fire persists 
    • Fire Reserve
    • Rotor brake
    • Pax out and upwind
    • Switches off
  2. FIRE during take off/app
    • Land if area available
    • Collective lower
    • Airspeed 45kts min
    • Throttle - ID / Idle/ check for fire / Closed
    • T Handle - ID / Pull
    • Fire ext - Main
    • If fire persists >10sec
    • Fire ext - reserve
  3. FIRE in flight
    • Collective lower
    • Throttle - ID / idle / check for fire / closed
    • T Handle - ID / Pull
    • Fire Ext - Main
    • BATT BUS - both on
    • Non ESTL BUS - Manual
    • If fire persists >10s
    • Fire Ext - Reserve
    • RPM 100%
  4. HOT start/shutdown
    • Throttle ..... closed
    • Starter ..... on until ITT <150°
    • Fuel switch ..... ID / off
    • Boost pump ..... off
  5. Baggage compartment FIRE
    • Pwr - reduce to min required
    • Land ASAP
    • If signs of fire/smk or doubt
    • LAND IMMEDIATELY
  6. SMOKE and FUMES
    • Vent blower on
    • Vents / windows open
    • Cx list
  7. Elect FIRE in flight
    • IAS - reduce if required to open door 60kts
    • Cockpit windows - open
    • Pax brief
    • Electric systems off if able
    • Cx list
  8. Engine failure in hover
    • Collective - Freez / lower to minimise Nr decay
    • Cycle / Pedals - Correct drift and yaw
    • Collective - cushion
  9. Eng FAIL before TDP/Committed
    • Collective - adjust to contain Nr
    • Cyclic - attitude to reduce ground speed
    • Collective - cushion
    • Cyclic / Pedals - correct drift / yaw
  10. Eng FAIL after TDP/Committed (or before committed on approach
    • Collective - contain Nr >97 - Beep to 100
    • Cyclic - speed stable for Vtoss 45kts
    • Cyclic - clear of obstacle accelerate to 70kts
    • BTY BUS - both on
    • NON-ESTL BUS - Manual
    • NFP/AC - call Nr trends, monitor OEI limits
  11. Eng FAIL in cruise
    • Collective - Adjust to contain Nr >97
    • IAS - Adjust to maintain ≥ 70kts
    • RPM - beep to 100
    • Remaining engine - confirm within limits
    • BAT BUS - both on
    • Non-Estl Bus - Manual
    • NFP/AC - call Nr trends, monitor OEI limits
  12. Dual eng FAIL
    • Collective - Lower to achieve Auto
    • Airspeed - Establish 65-70kts (or range 90kts)
    • Pax - brief / brace
  13. Eng low oil press
    Collective - lower to within OEI limits
  14. Eng CHIP
    • Collective - lower to within OEI limits
    • Safe flight - ensure prior to engine shutdown
  15. Eng high oil temp
    Collective - lower to within OEI limits
  16. High side GOV fail
    • Collective adjust to contain Nr
    • Safe flight
    • Throttle - ID / idle
  17. Low side GOV fail
    • Collective - adjust to contain Nr>97 - beep to 100
    • Safe flight
  18. Eng fluctuations
    Safe flight
  19. Main drive shaft fail
    • Collective - autorotate
    • Airspeed 65-70kts (or 90kt for range)
    • Throttles - both closed
  20. TXMSN oil pressure
    • Collective - reduce to min power
    • Confirm indications Oil pressure gauge
  21. TXMSN oil temp
    • Collective - reduce to min power
    • Confirm indications Oil temp gauge
  22. TXMSN CHIP
    • Collective - min power
    • IAS - consider reducing to 70 kts
    • LAND ASA Practicable
  23. C-box low oil press OR high temp
    • Cx t's and p's
    • If confirmed set min pwr/70 KIAS
    • Cx list
  24. C-box CHIP
    • Set min pwr
    • Cx list
  25. Rotor brake warning light
    • Check Rtr brake detent
    • If in detent and light on Land ASAP
  26. 42/90 Gear box Chip light
    LAND ASA Practicable
  27. Loss TR thrust in hover
    • Throttles closed
    • Attitude level
    • Ground speed zero
    • collective cushion
  28. Loss TR thrust in flight
    • Throttles closed to flight idle
    • Enter auto
    • 70 KIAS

    Warning - do not allow Nr to decay below min limits
  29. HYD failure
    Confirm failure - check gauge
  30. AFCS fails or disengages
    • IAS < 115 if single HP
    • Cx list

    NB/ If both fail then no IAS limit
  31. API hardover
    • cyclic Manually ctl
    • Force trim press and hold
    • IAS <115
    • Cx list

    Failed system will indicate maximum compare system 1/2 to compare
  32. Auto trim runaway
    • Manually ctl
    • Cx list
  33. Double inverter failure
    • Use standby instruments
    • Cx list
  34. DC gen overheat
    • DC gen switch off
    • Cx list
  35. Double fuel boost pump failure
    • Cx Fuel boost switches on
    • Cx list
  36. Cabin heating malfunction
    Heater switch off
  37. Tq Split, Nr Steady, 1 Tq gauge not responding
    • Jammed or stuck Governor
    • Carried out Low side engine failure
    • Throttle may not respond
    • Gov to Manual with throttle at idle should bypass Gov giving you manual control
  38. Jammed collective
    The anticipator for N1 is likley to have become jammed, there is a shear pin you can push the collective through breaking the shearpin giving you full control, but N1 may be slow to respond
Author
Whitto82
ID
330681
Card Set
Bell 412 BOLDFACE Cx's
Description
B412 Boldface
Updated