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Limitations

Section II

Table of Contents

GENERAL

AIRCRAFT OPERATING SPEEDS

POWERPLANT

LIMITATIONS

OPERATING LIMITATIONS

OIL

SPECIFICATIONS

PROPELLERS 13

POWERPLANT INSTRUMENTS MARKINGS 13

MISC INSTRUMENT MARKINGS

HYDRAULIC

PRESSURE

WEIGHT

LIMITS

CENTER OF GRAVITY LIMITS (Gear Extended) 14

REFERENCE

DATUM 15

FLIGHT LOAD FACTOR LIMITS

TYPES OF OPERATIONS AND LIMITS

FUEL

QUANTITIES

SEATING

WINTER

OPERATIONS

GENERAL

The data approved by Lancair International and

the limitations presented herein are those established by

Lancair as applicable to the Lancair IV model aircraft.

The airspeeds quoted are given conventional nomen

clature, are shown in knots, calibrated airspeed, and

assumes zero instrument error.

NOTE

It is imperative that you calibrate your airspeed

system (static and pitot) to provide the corrections to

the values shown below in KCAS. There is instru-

ment (gauge) error that needs to be factored in also

to reach KIAS

AIRCRAFT OPERATING SPEEDS

SPEED MARKING

KCAS

Never exceed speed Vne Red Line

274

Caution, smooth air only

Yellow Arc 220-274

Maneuvering

Speed

170

Normal Operating range Vno Green Arc

69-220

Flap Operating range, 0-10 Deg

174

Flap Operating range,

Vfe White Arc

61-

132

Best Angle of climb speed Vx

110

Best Rate of climb speed Vy

135

Stall Speed clean

Stall Speed landing config. Vso

Landing Gear Operating speed Vlo

150

Landing Gear Extended Speed Vle

165

Содержание IV

Страница 1: ...AINTENANCE 48 SECTION VIII SUPPLEMENTS 60 General Section I Table of Contents IMPORTANT NOTICE 3 REVISING THIS HANDBOOK 4 DESCRIPTIVE DATA 5 Engines Propellers Fuels Oil Capacities Weights Cabin and E...

Страница 2: ...dbook as well as any placards located in the air plane Again another reminder the operator should also be familiar with the Federal Aviation Regulations as applicable to the operation and maintenance...

Страница 3: ...the model for which this handbook is applicable Detailed information on this Revision Service can be obtained from Lancair NOTICE LANCAIR INTERNATIONAL INCORPO RATED EXPRESSLY RESERVES THE RIGHT TO S...

Страница 4: ...ceability we will publish these findings when they are available NOTE Other propellers which are approved are listed by Lancair and its dealers or are approved by Supplemental Type Certificates FUELS...

Страница 5: ...plication of full available aerodynamic control will not overstress the air plane VFE Maximum Flap Extend Speed is the highest speed permissible with wing flaps in a prescribed ex tended position VLE...

Страница 6: ...tend Speed is the highest speed permissible with wing flaps in a prescribed ex tended position VLE Maximum Landing Gear Extended Speed is the maximum speed at which an airplane can be safely flown wit...

Страница 7: ...GPH Gallons per hour fuel flow PPH Pounds per hour fuel flow...

Страница 8: ...rs are assumed to be zero Position errors may be obtained from the Altime ter Correction Graph Station Pressure Actual atmospheric pressure at field elevation Wind The wind velocities recorded as vari...

Страница 9: ...ered safe MEA Minimum enroute IFR altitude Route Segment A part of a route Each end of that part is identified by 1 a geographical location or 2 a point at which a definite radio fix can be establishe...

Страница 10: ...f weight or ramp weight if applicable and basic empty weight Maximum Ramp Weight Maximum weight approved for ground maneuvering It includes weight of start taxi and runup fuel Maximum Take Off Weight...

Страница 11: ...e airspeeds quoted are given conventional nomen clature are shown in knots calibrated airspeed and assumes zero instrument error NOTE It is imperative that you calibrate your airspeed system static an...

Страница 12: ...cruise 380 420 Oil Temperatures Deg F Maximum 240 Recommended Take off Minimum 100 Min Max Limit Maximum Cruise 160 180 Oil Pressure PSI Normal operation 30 60 Idle Minimum 10 Max Allowable cold oil 1...

Страница 13: ...RPM Operating Range Green Arc 600 2700 Maximum Red Line 2700 CYLINDER HEAD TEMP Deg F Operating Range Green Arc 380 420 Maximum Red Line 460 TURBINE INLET TEMP Deg F Max Continuous Green Arc 1750 Peak...

Страница 14: ...approved for the following types of flight when the required equipment is installed and op erations are conducted as defined in the LIMITATIONS section 1 VFR day and night 2 IFR day and night Warning...

Страница 15: ...EMERGENCY AIRSPEEDS Emergency Descent Idle Power Gear Flaps up 170 274 Best Glide 120 Landing Approach W O Power 110 NOTE The following check lists are presented to capture in a compact format those...

Страница 16: ...aps AS REQUIRED Maintain directional control and make only shallow turns to avoid obstacles If sufficient altitude has been gained to attempt a restart Item Condition Airspeed 100 KTS Fuel Selector Mi...

Страница 17: ...pump OFF Land immediately and exit the aircraft Engine fire during start Starter CONTINUE CRANKING Mixture IDLE CUT OFF Throttle FULL OPEN Boost pump OFF Fuel Selector OFF EMERGENCY DECENT Throttl ID...

Страница 18: ...Engine operation for the balance of the flight must be monitored closely Propeller Damage As with any major component of an aircraft the propeller demands proper care Nicks scratches and other types o...

Страница 19: ...mp lock into the down position Emergency gear extension is accomplished as follows Airspeed BELOW 120 KTS Gear Motor Solenoid Circuit Breaker PULLED Gear Handle DOWN Emergency Hand Pump PUMP The nose...

Страница 20: ...eployed gear extended and the most critical would be the extension of the wing flaps before reach ing 132 KIAS Vfe Normal Procedures Section IV Table of Contents SAFE OPERATING AIRSPEEDS 24 PREFLIGHT...

Страница 21: ...ON 5 Gear Position Lights 3 Green 6 Fuel Quantity Indicators CHECK QUANTITY 7 Flaps DOWN 8 Lights CHECK for night operations 9 Master Switch OFF 10 Fuel Selector Valve FULLEST TANK 2 EMPENNAGE 1 Bagga...

Страница 22: ...r of possible water and sed iment Check strainer drain closed WARNING Make certain that the battery and magnetos are OFF and that no one is in or near the cockpit while performing this check Hands pas...

Страница 23: ...le to idle when engine fires 8 Oil Pressure CHECK NOTE After starting check for oil pressure indica tion within 30 seconds in normal temperatures and 60 seconds in cold temperatures If no indication a...

Страница 24: ...Oil Door Closed BEFORE TAKE OFF 1 Cabin Door CLOSED LOCKED and SEAL INFLATED 2 Flight Controls FREE and CORRECT 3 Speed Brake TEST 4 Elevator Aileron Rudder Trim TAKEOFF 5 Flight Instruments SET 6 Ra...

Страница 25: ...2 Power FULL THROTTLE Max 38 Hg and 2700 RPM 3 Brakes RELEASE above 25 Hg 4 Elevator Control ROTATE at 65 KIAS 5 Climb Speed 110 KIAS until all obstacles are cleared VX 6 Wing Flaps RETRACT slowly af...

Страница 26: ...tor and Rudder Trim ADJUST 9 Speed Brakes RETRACTED BALKED LANDING 1 Power FULL THROTTLE 38 Hg Max and 2700 RPM 2 Wings Flaps RETRACT to 20 degrees 3 Gear Retract after positive rate of climb 4 Airspe...

Страница 27: ...turbine inlet temperature indicator is used as an aid to leaning proceed as follows 1 Adjust RPM for desired cruise setting 2 Slowly move mixture control toward lean while observing T I T gage Note p...

Страница 28: ...e Lancairs with their extraordinary smoothness can suffer markedly from the effects of such accumulations as they utilize laminar flow airfoils These effects result in significantly higher drag of the...

Страница 29: ...icing conditions if at all possible NOISE All approaches and departures should be made with noise considerations second only to safety More and more areas are becoming noise sensitive and our consider...

Страница 30: ...e beam scales or equivalent These scales should be able to handle up to 1500 pounds each Often your local EAA chapter will have a set or know the location of a set available for your use Many FBOs hav...

Страница 31: ...ate lines on Column A See blank Lancair IV Weight and Balance Sheets provided for recording these data 6 Log the weights of any shim stock the 1 x 4s and any other non aircraft weight that is on the s...

Страница 32: ...front seat passenger moment arm This approach can be used to calculate accu rately the remaining loading points like the rear pas sengers fuel and baggage It is recommended that this be done as this...

Страница 33: ...S SHOULDER HARNESS 40 CONTROL LOCKS 40 ENGINES 41 Engine Controls Engine Instrumentation Engine Starting Accessories Fire Detection Extinguishing Abnormal Operation PROPELLERS 44 FUEL SYSTEM 44 HYDRAU...

Страница 34: ...e and use than most other systems Read and comply with all material handling warnings FLIGHT CONTROLS The Lancair IV is conventional in its control configuration except for the side stick controls Lan...

Страница 35: ...he nose wheel off the ground and measure the rotational resistance of the assembly Air oil struts should have from 20 50 ft pounds of torque Also check the rotational resistance of the wheel If more t...

Страница 36: ...y should not be so soft as to not provide support under high G conditions They should not support combus tion or give off toxic fumes when subjected to fire or an ignition source Of course in addition...

Страница 37: ...dry of fuel All engines utilize a throttle to control the airflow into the engine restricting it with a butterfly throttle valve in the intake system Full throttle allows unrestricted airflow into the...

Страница 38: ...ke manifold or near the intake valve and are less prone to form ice in the intake system since there is no tem perature drop due to the fuel vaporization at the throttle valve These installations howe...

Страница 39: ...engine and attempt to draw the fire back into the engine where it belongs If the radio is on advise your situation If cranking the engine fails or cranking is not possible for some reason introduce th...

Страница 40: ...overcenter locked position for the nose gear and to down and locked for the mains The flaps operate in a similar manner and are discussed in later text As with any hydraulic system proper servicing is...

Страница 41: ...Such circuits would include map lights landing lights instrument panel lights position lights and strobe lights Each would be powered off the main buss have an approximately sized circuit breaker hav...

Страница 42: ...onditions or precipitation the heated type should be installed and a check made of its operation prior to flight This check can be made during preflight by turning the master switch on the pilot heate...

Страница 43: ...rity is not compromised Inspections inspection periods and servicing information should be used as a guide 51 Rule Your Lancair is in a growing group of aircraft called amateur built This group of air...

Страница 44: ...r the rules of all other aircraft and owner pilot maintenance is significantly restricted It is then treated just as a commercially built aircraft except that an AI is not required for annuals any A P...

Страница 45: ...ours through the year this is a recommended inspection ALTERATIONS OR REPAIRS If you built your aircraft and have received your Repairman certification you may make any modi fications desired however...

Страница 46: ...to the engine lifting ring then raise the nose as desired watch the spin ner Again care must be observed and the caution note above applies OUT OF SERVICE CARE Should you be required to place your La...

Страница 47: ...cooling air intake NACA inlet covered or plugged and the battery removed...

Страница 48: ...eign material It is good practice to leave the tanks full to minimize the amount of combustible fuel air vapor present in the tanks This also helps minimize the amount of water vapor in the fuel syste...

Страница 49: ...o dis pose of the hydrogen gas produced during charging Hydrogen is an explosive gas in widely varying con centrations so it is important to frequently check that the vent line is clear of obstruction...

Страница 50: ...rviced according to the manufacturer s instructions It is highly stressed component and any failure has the potential of being catastrophic Treat it with care The MT propeller is sensitive to leading...

Страница 51: ...gainst the spill for a few seconds allowing it to absorb the liquid Repeat until all liquid is removed Scrape off any gum materials Test a spot remover on a test piece of material or an out of sight l...

Страница 52: ...il with Ashless Dispers ant oilChange oil filter Change fuel filters Check battery fluid Check brake lines Check all gear doors nose main gears Control surface hinges Each 50 Hours Change oil Clean or...

Страница 53: ...fraying mat l Seat belts attach points secure fraying mat l Airframe de laminations cracks lost paint etc Airframe de bonding of layups junctions SUPPLEMENTS SECTION VIII TABLE OF CONTENTS WEIGHT AND...

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