BREWSTER MODEL 339 BUFFALO PROCEDURES
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PRELIMINARIES

[ ] Brakes -- TEST AND SET
[ ] Ignition Switches -- OFF
[ ] Undercarriage and Flap Levers -- NEUTRAL
[ ] Battery and Generator Switches -- ON
[ ] Fuel Tank Contents -- AS REQUIRED
[ ] Controls -- CHECK FREE MOVEMENT
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STARTING ENGINE AND WARMING UP

[ ] Mixture Control -- FULL RICH
[ ] Pitch Control Lever -- FINE PITCH
[ ] Cowling Gills -- OPEN
[ ] Carburetor Heat -- COLD
[ ] Fuel Cock -- LEFT TANK
[ ] Engine Switches -- ON
[ ] Wobble Pump -- AS NEEDED
[ ] Priming Pump -- 3~5 STROKES DEPENDING ON TEMPERATURE
[ ] Throttle -- 1/4 OPEN
[ ] Starter -- PUSH IN 15 SECONDS, THEN PULL TO ENGAGE
[ ] Oil Pressure -- CHECK-- OVER 50 PSI (NORMAL 60 PSI)
[ ] Warm Up -- 1000 RPM UNTIL 10 DEGREES C. OIL TEMPURATURE RISE

Note: Optimum Oil Temperature -- 74 DEGREES C.
Maximum Oil Temperature -- 88 DEGREES C.

[ ] Cylinder Head Temperature -- CHECK 150 DEGREES C. MINIMUM
[ ] Fuel Pressure -- 6~7 LBS
[ ] Brake Pressure -- CHECK 800 PSI
[ ] Flaps -- CHECK
[ ] Switches -- TEST (32" Hg) -- LESS THAN 50 RPM DROP
[ ] Propeller Pitch -- CHECK DROP
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TAXYING OUT

[ ] Tail Wheel Lock -- FREE
[ ] Cowling Gills -- OPEN

Note: AVOID RUNNING UNDER 1000 RPM, OVER 1200 RPM FOR EXTENDED PERIODS
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PREPARATION FOR TAKE-OFF

[ ] T -- Trimming Tabs -- NOSE HEAVY/AILERON TAB NEUTRAL/RUDDER TAB STARBOARD
[ ] M -- Mixture -- FULL RICH
[ ] P -- Pitch -- FINE PITCH
[ ] FLAPS -- AS DESIRED (not recommended for normal takeoff conditions)
[ ] Tail Wheel Lock -- LOCKED
[ ] Brakes -- RELEASE
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TAKE-OFF

[ ] Maximum RPM -- 2350 RPM
[ ] Boost -- 43.5" Hg
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ACTIONS AFTER TAKEOFF

[ ] Undercarriage -- RAISE
[ ] Boost -- REDUCE TO 35.5" Hg
[ ] RPM -- REDUCE SLOWLY TO 2300 RPM
[ ] Air Speed -- 145 MPH IAS
[ ] Instruments -- CHECK
[ ] Flaps -- RAISE ONLY AFTER 500FT OBTAINED IF USED FOR TAKEOFF
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ENGINE FAILURE DURING TAKE-OFF

[ ] Undercarriage -- LOWER
[ ] Flaps --LOWER
[ ] Switches -- OFF
[ ] Fuel Cock -- OFF
[ ] Land Straight Ahead
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CLIMBING

[ ] Air Speed -- 145 MPH IAS
[ ] Boost -- Sea Level: 43.5" Hg, 2350 RPM (3 MIN ONLY)
1000ft~10000ft: 35.5" Hg, 2300 RPM
10000ft~17000ft: 33.5" Hg, 2300 RPM
17000ft and Upwards: FULL THROTTLE, 2300 RPM

[ ] Fuel Selector Valve -- BOTH
[ ] Mixture -- FULL RICH
[ ] Cowling Gills -- FULL OPEN
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CRUISING

[ ] Throttle -- LOWEST OUTPUT SUITABLE FOR CONDITIONS
[ ] Cylinder Head Temperature -- 205 DEGREES C. MAXIMUM
[ ] Propeller -- 1700-1900 rpm
[ ] Elevator Trim -- ADJUST
[ ] Rudder Trim -- ADJUST
[ ] Mixture -- LEAN
[ ] Cowling Gills -- CLOSED
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COMBAT

[ ] Extinguish all smoking materials
[ ] Weapons -- ARM
[ ] Guns -- FIRE FUSELAGE AND WING GUNS TOGETHER
[ ] Cylinder Head Temperature -- 260 DEGREES C. MAXIMUM (5 MINUTE LIMIT)
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GLIDING

[ ] Air Speed -- Flaps UP -- 110 MPH IAS
Flaps DOWN -- 90 MPH IAS
Engine-Assisted/Flaps DOWN -- 80 MPH IAS (NOT RECOMMENDED)
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DIVING

[ ] Hood -- CLOSED
[ ] Propeller -- COARSE PITCH
[ ] Throttle -- 1/3 OPEN
[ ] Cowling Gills -- CLOSED
[ ] Mixture -- FULL RICH
[ ] RPM -- 2760 RPM MAXIMUM

Note: TABS MUST NOT BE USED FOR RECOVERY
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APPROACH AND LANDING

[ ] Hood -- OPEN
[ ] Mixture -- FULL RICH
[ ] Cowling Gills -- CLOSED
[ ] Fuel Selector -- BOTH
[ ] U -- Undercarriage -- LOWER
[ ] P -- Pitch -- FINE PITCH
[ ] FLAPS -- DOWN (MAXIMUM SPEED 161 MPH IAS)
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FINAL APPROACH AND LANDING

[ ] Air Speed -- 90~95 MPH IAS WITH OR WITHOUT ENGINE
[ ] Trim -- NOSE DOWN with full flaps
[ ] Touchdown -- Main wheels first or 3-point
[ ] Landing Roll -- LOWER tail wheel gently
[ ] Braking -- MINIMUM REQUIRED
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PROCEDURE AFTER LANDING

[ ] Tail Wheel Lock -- FREE
[ ] Taxi -- CLEAR OF LANDING AREA
[ ] Flaps -- UP
[ ] Cowling Gills -- OPEN DURING GROUND OPERATION
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SECURING AIRPLANE

[ ] Brakes -- SET
[ ] Throttle -- IDLE
[ ] Propeller -- FINE PITCH
[ ] Mixture -- IDLE CUTOFF
[ ] Engine Switches -- OFF
[ ] Fuel Cock -- OFF
[ ] Master Battery Switch -- OFF
[ ] Cowling Gills -- CLOSED
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BELLY LANDINGS AND
WATER LANDINGS (DITCHING)

[ ] Landing Gear -- UP
[ ] Landing Flaps -- DOWN
[ ] Shoulder Harness -- LOCKED
[ ] Hood -- OPEN

PRIOR TO CONTACT WITH SURFACE

[ ] Switches -- OFF
[ ] Fuel Cock -- OFF
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BAILING OUT

[ ] Air Speed -- REDUCE as much as possible
[ ] Hood -- OPEN
[ ] Abandon airplane, while inverted if possible

CAUTION: Before bailing out at altitude, inhale as much oxygen as possible.
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GENERAL INFORMATION

STALLING

[ ] Air Speed -- Undercarriage and flaps UP -- 78 MPH IAS
Undercarriage down, Flaps down -- 73mph IAS

AEROBATICS

Aerobatics and loops, slow rolls, and combinations thereof are permitted. Deliberate spinning and inverted flying are prohibited.