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Bell 206 Helicopter Preflight Checklist

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BELL 206 PREFLIGHT CHECKLIST

FUEL GAUGE , HOBBS METER SQUAWKS: check Battery : Connected

FUSELAGE CABIN RIGHT SIDE
RIGHT STATIC PORT: condition ( 7 holes )
CABIN DOORS WINDOWS: condition and security
LANDING GEAR: condition ground landing wheels removed

FUSELAGE CENTER RIGHT SIDE
HYDRAUDIC RESERVOIR: oil level
HYDRAULIC SYSTEM FILTER: bypass indicator retracted
HYDRAULIC ACTUATOR & LINE: condition security, interference, leakage
FORWARD FAIRING: secured
ACCESS DOOR: secured

TRANSMISSION AREA
TRANSMISSION: oil level and area for leaks
TRANSMISSION & MOUNTS: security and condition
ISOLATION MOUNT: condition
DRAG PIN: security and evidence of contact with static stop plate
MAIN DRIVESHAFT FORWARD COUPLING: condition and grease leakage color stripe
ACCESS DOOR: secured
AIR INDUCTION COWLING: secured
ENGINE INLET & PLENUM: condition, clear of obstructions
FUEL FILLER CAP: visually check level, secure cap
FUEL SUMP: drain fuel sample

POWER PLANT AREA
MAIN DRIVESHAFTAFT COUPLING: condition and grease leakage color
ENGINE: condition and security of attachments
ENGINE MOUNTS: condition and security
THROTTLE LINKAGE: condition, security, freedom of operation
FUEL CONTROL & GOVERNOR: evidence of leakage
HOSES & TUBING: chafing, security and condition
EXHAUST STACK & CLAMP: security and condition
ENGINE COWL: secure
GENERATOR COOLING SCOOP: clear of debris
OIL TANK: oil level, leaks, security and cap secure
ACCESS DOOR: secured
AFT FAIRING : secured

FUSELAGE AFT RIGHT SIDE
FUSELAGE: condition
TAIL ROTOR DRIVESHAFT COVER: condition and secured
TAILBOOM: condition
HORIZONTAL STABILIZER & POSITION LIGHT: condition and security
MAIN ROTOR BLADE: condition

FUSELAGE FULL AFT
VERTICAL FIN: condition
TAIL ROTOR GUARD: condition and security
ANTI-COLLISION LIGHT: condition and security
AFT POSITION LIGHT: condition
TAIL ROTOR GEARBOX: oil level, leaks and security
TAIL ROTOR CONTROLS : condition security
TAIL ROTOR BLADE: condition Tip block for rivet damage, corrosion and seal conical bearing

FUSELAGE AFT LEFT SIDE
MAIN ROTOR TIEDOWN: removed, condition
TAILBOOM: condition
TAIL ROTOR DRIVESHAFT COVER: condition and secured
FUSELAGE: condition
HORIZONTAL STABILIZER & POSITION LIGHT: condition and security
BAGGAGE COMPARTMENT: cargo tied down, door closed
FORWARD TAIL ROTOR DRIVESHAFT COUPLING: condition of splined adapter and Freedom of rotation of witness pin
OIL COOLER BLOWER SHAFT HANGER BEARINGS: grease leakage and overheating
OIL COOLER BLOWER: clear of obstruction and condition
OIL COOLER: condition and leaks
OIL COOLER ACCESS DOOR: secured
AFT FAIRING: secured

POWER PLANT AREA
ENGINE: condition, security of attachments
ENGINE MOUNTS , EXHAUST STACK & CLAMP: condition and security
EVIDENCE OF FUEL & OIL LEAKS
HOSES & TUBING for chafing and condition
LINEAR ACTUATOR & GOVERNOR CONTROL LINKAGE: condition and security
ENGINE ANTI-ICE VALVE & LINKAGE: condition and security
TAIL ROTOR DRIVESHAFT: condition of spline, couplings and freedom of movement
ENGINE COWLING & AIR INDUCTION COWLING : secured
ENGINE INLET & PLENUM: Condition, clear of obstruction

TRANSMISSION AREA
TRANSMISSION & MOUNTS: condition and security, area for leaks
ISOLATION MOUNT: condition
ACCESS DOOR: secured

FUSELAGE- CABIN LEFT SIDE
MAIN ROTOR HUB & YOKE: condition and cracks
PITCH HORN TRUNNION BEARING: wear and security
MAIN ROTOR PITCH LINKS: condition, cracks, and security of attachment bolts
SWASHPLATE ASSEMBLY: condition, security of attached controls, and boot condition
CONTROL LINKAGES TO SWASHPLATE: condition, security of attachment bolts
FORWARD FAIRING AND ACCESS DOOR: secured
CABIN DOORS & WINDOW: condition and security
LANDING GEAR: condition , ground handling wheels removed
LEFT STATIC PORT: condition

FUSELAGE FRONT
EXTERIOR SURFACES: condition
WINSHIELD: condition and cleanliness
BATTERY & VENT LINES: condition and security
BATTERY ACCESS DOOR: secured
PITOT TUBE: cover removed, clear of obstructions
EXTERNAL POWER DOOR: condition and security
LANDING LIGHT GLASS: condition
ANTENNAS: condition and security
MAIN ROTOR BLADE: condition
EXTERNAL POWER: connect (if desired)

INTERIOR CHECK
CABIN INTERIOR: cleanliness and security of equipment
FIRE EXTINGUISHER: secure, charge indicator in green arc
COPILOT CONTROLS (if installed): security and proper installation
CABIN DOORS: secured

ENGINE PRE-START CHECK

FLIGHT CONTROLS: Check freedom , Position for start
THROTTLE: Full open , flight idle , closed
LANDING LIGHT: off
NIGHT SCANNER LIGH: stow
ENGINE ANTI-ICE: off
HYDRAULIC SYSTEM (Control boost ): off
MASTER AVIONICS: off
ALTIMETER: Set to field elevation
INSTRUMENTS: static Zero
OVERHEAD SWITCHES: off (except anti-collision light on)
FUEL BOOST SWITCHES: on
CIRCUIT BREAKERS: in
FUEL VALVE: on
ROTOR BRAKE: off
CABIN HEATER: off
BATTERY SWITCH: on
CAUTION SWITCH: on test warning light , low rotor horn
CAUTION SWITCH: off

ENGINE STARTING

MAIN ROTOR: clear
THROTTLE: Full open , flight idle , closed
STARTER: Engage check for engine oil pressure at 10% N1
THROTTLE: open to flight idle at 15% N1 with TOT at or below 150 C
MAIN ROTOR: turning by 25% of N1
STARTER: Release at 58% N1
CHECK ENGINE & TRANSMISSION OIL PRESSURE
STABILIZE at flight idle ( 60% 62% N1 ) for one minute
THROTTLE: open to 70% N1
GENERATOR: on
MASTER AVIONICS: on ( Headsets on )

ENGINE RUN-UP CHECK

CAUTION SWITCH: on
CAGE GYRO & GYRO SWITCH: on
POSITION LIGHTS: As required
FUEL BOOST PUMPS: Check individually for pressure & caution light operation
HYDRAULIC CONTROL SWITCH: off , check operation of flight controls
HYDRAULIC CONTROL SWITCH: on
THROTTLE: Full open ( torque below 40% )
GOVERNOR: set to 100% N2
ENGINE ANTI-ICE: on , check TOT rise Switch off
INSTRUMENTS: Check proper readings (3-6-8-10)

ENGINE SHUTDOWN

THROTTLE: Flight idle , check full RPM to 65% N1 should take 3 to 5 seconds
CYCLIC & COLLECTIVE FRICTION: hydraulic switch off
BOOST PUMPS SWITCHES: off
TOT: stabilize for 2 minutes
CAUTION SWITCH: off
THROTTLE: close
TOT and N1: decreasing
FUEL VALVE: off
POSITION LIGHT: off
ATTITUDE INDICATOR & GYRO SWITCH: off
GENERATOR: off
APPLY ROTOR BRAKE: below 38% NR
MASTER AVIONICS: off
N1: Zero , then Battery off

PILOT REMAIN AT FLIGHT CONTROLS UNTIL
ROTOR COME TO A COMPLETE STOP







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