Pilt's Operating Handbk Aernca - 11AC Chief This manual has been prepared t infrm the pilt f systems and features incrprated in the Aernca Mdel 11AC aircraft. The enclsed perating prcedures and perfrmance data are prvided s that maximum utilizatin can be btained with the utmst safety, ecnmy and serviceability. This manual des NOT replace the FAA apprved placards and perating limits in a specific aircraft. If a difference exists between this manual and the FAA apprved placards / perating limitatins, the FAA apprved placards and perating limitatins shall be the authrity. Engine: Cntinental A-65-8 Type Certificatin N. E-205 Cylinder Bre 3.875 Strke 3.625 Displacement 171 ci Rated HP (sea level) 65 hp Maximum RPM 2300 Recmmended Cruise RPM 2150 Minimum Octane 73 Oil pressure - cruise 30/40 - Minimum 10 Oil Capacity 4.5 qt Max Oil Temp (at 100 F utside temp) 220 This manual is prvided t the Aernca "Chief" Owner fr Flight and Operating prcedures. It includes a cpy f the aircraft Type Certificate as well as specificatins and perfrmance data.
The Aernca Chief is designed and assembled s that prper care and maintenance will assure lng life t the aircraft. ATTENTION When taxiing dwnwind with the Mdel 11AC, it is advisable in strng and gusty winds t taxi slwly with the stick well frward. Use particular care when turning frm a dwnwind t a crss wind psitin. When a quartering tail wind is experienced, keep the ailern nearest the directin frm which the wind is blwing in a DOWN psitin. With a quartering tail wind, always keep the stick directly away frm the wind directin. Always face directly int the wind when "running up" the engine. Facing the wind tends t eliminate trque-quartering effects and aids engine cling at high RPM. GENERAL DESCRIPTION The "Chief" is a tw place, side by side, high wing mnplane. Basic fuselage cnstructin is welded tubing with fabric cvering. The wings are cmpsed f tw wden spars with aluminum ribs and fabric cvering. The wing leading edges are cvered with aluminum sheet t prvide a mre efficient airfil. Pwer is prvided by a 65 hp engine and fixed pitch prpeller. Engine vibratins are dampened by rubber munt bushings. Gd visin is attained thrugh the use f a ne piece windshield plus large dr and rear quarter windws. Basically the Chief is a cnventinal three cntrl aircraft. The wheel type dual cntrl system prvides smth and nn-fatiguing cntrl. Heal brake pedals are prvided n the pilt's side, and rudder pedals withut brakes n the cpilt's side. A trim tab n the left elevatr cmpensates fr lad differences and prvides fr hands-ff flight. The trim tab cntrl is lcated abve and between the tw ccupants. Engine cntrls are readily accessible frm either seat. Cncealment f cabin cntrl cables prvide greater cabin cmfrt. A large baggage cmpartment is lcated behind the seat t accmmdate luggage and ther items. The famus Aernca Ole Landing gear is incrprated in the Chief. This timetested methd f landing gear cnstructin ensures sturdy yet smth handling n rugh fields. Much f the shck is absrbed in the le, thereby lessening fatigue in the rest f the airframe and wing structure. Ease in grund handling is assured with steer-able leaf spring tail wheel and psitive-acting mechanical brakes. Tie-dwn rings are incrprated at the strut wing attachment pint fr security in the event strage space is nt available.
CABIN Plexiglas windws are used thrughut, assuring a minimum f disclratin due t expsure. When cleaning, all grit and freign particles shuld be flushed ff with clean water. Final cleaning shuld be dne with a sft clth and any recmmended type f Plexiglas cleaner. Never use dirty, ily rags t clean Plexiglas. Rapid changes in temperature shuld be avided, such as mving frm a warm hangar t extreme cld, which will cause rapid cntractin and breakage. Allwing fifteen minutes after Plexiglas has cled is recmmended befre starting engine. Vibratin increases pssibility f breakage during cling. The instrument panel is hydr-frmed all metal with a rich grained finish harmnizing with the interir clr scheme f the cabin. Instruments and cntrls are functinally gruped. The primary grup center panel is slped t prvide better visibility f instruments. Decrative center trim may be remved t prvide rm fr additinal instruments withut defacing the panel. Tw ash trays, key type switch, new type cmpass, and tw glve cmpartments are standard equipment in additin t il temperature, il pressure, tachmeter, altimeter and airspeed instruments. The carburetr heat cntrl, switch, cabin heater cntrl, thrttle, mixture cntrl, push/pull main fuel shut-ff are munted in a lwer subinstrument panel lcated between the cntrl clumns and readily accessible t bth ccupants. The auxiliary fuel tank is lcated behind the luggage cmpartment and the fuel valve is n the left side f the cabin directly belw the instrument panel. CAUTION -- Very Imprtant The auxiliary fuel valve shuld be in the "OFF" psitin when the aircraft is n the grund [r at nse-high attitude]. Failure t clse this valve will allw fuel t drain back t the auxiliary tank frm the main tank when in a three pint psitin. Fuel shuld be transfered frm the auxiliary t the main tank during level r gliding flight nly, and when the main tank is less than ne-half full. Always turn auxiliary valve t "OFF" psitin befre landing. CAUTION: Checking fr water in the sediment bwl shuld be dne daily. Operating in cld weather and string in a warm hangar with an unfilled fuel tank r perating in a climate where high humidity is prevalent are mst prbably causes fr cndensatin and the presence f water in the system. Fr cld weather starting, three slw mvements f the primer pump as the prpeller is turning ver will frce fuel directly int the inductin system assuring quick, psitive starting. CAUTION: Be sure fuel vent lines t the tanks are nt plugged. There is a vent fr each tank in the wing utbard f the tank.
Airplane Specificatins Airframe Length 20' 5" Height 6' 7" Height Level 8' 8" Wing Span 36' Aspect Rati 7.25 Wing Chrd 60" Stabilizer Span 10' 2" Wheel Tread 72" Wheel Base 15' 10" Stabilizer Incidence -3.5 degrees Wing Dihedral +2 degrees Wing Incidence +1 degree Fin Offset 3/8" Left f Centerline Cabin Width 36" Cabin Height (flr t ceiling) 45" Cabin Height (seat t ceiling) 35" Weights (CHECK current weight and balances) Empty Weight 790 Grss Weight 1250 Useful Lad 460 Wing Lading 7.15 Pwer Lading 19.2 Baggage 70 Perfrmance Cruising Speed Maximum Speed Landing Speed Rate f Climb Fuel Capacity 90 MPH 129 MPH 40 MPH 500 fpm 15 Main - 8 Aux
Fuel Cnsumptin 4.4 Gal/Hr @ 2150 Cruise Range 270/420 miles Oil 4 Quarts (U.S.) Minimum Oil Cnsumptin.75 Pint per Hr. Oil Pressure 10 lbs. Idle (Min) 30-40 Cruise (Green) Oil Temperature 90 Min fr Take-Off 220 Max (Red Line) Prpeller Limits Tachmeter Max 2300 RPM Cruise 2150 RPM Preflight Inspectin 1. Cabin Cabin Dr - CHECK cnditin, security Dr Latch, Open with slight inward pressure n dr and mve latch t dwn psitin, Clse with slight pressure n dr and mve latch int lcked-hrizntal psitin Flight Cntrls - CHECK freedm f mvement Trim tab - check fr slight nse up psitin Magnet - OFF Fuel quantity Gauges - CHECK quantity Make a nte f tach time and fuel quantity t determine endurance range Main Fuel Shut-ff Valve - OPEN Aux Fuel Shut-ff Valve CLOSED Primer Clsed and Lcked Seat Belts - CHECK cnditin, secure belt and harness if nt in use Emergency Lcatr Transmitter - ARMED 2. Right Wing Wing leading edge and tip free f damage Ailern - CHECK cnditin, freedm f mvement, security, hinges secure Wing Tip - CHECK cnditin Inspect the frnt and rear lift struts fr straightness, dents and ther damage. CHECK strut drain hles t ensure that they are nt plugged and the struts d nt cntain water. If either f the abve cnditins is fund, cntact an authrized aircraft mechanic t determine aircraft airwrthiness. Tie-dwn - REMOVE 3. Right Main Gear Chcks - REMOVE Tires - CHECK cnditin, inflatin
Brakes - CHECK cnditin, clips install, hub clean, cable tight Ole undamaged, n leak, expsed strut similar n bth gear Gear attach blts secure n lseness 4. Fuselage (Right Side) Aux Fuel - CHECK quantity, clr, cap secure, vents free (cap and belly vent) Fabric - CHECK cnditin Windws - CHECK cnditin, cleanliness 5. Empennage Hrizntal Stabilizer and Brace Wires - CHECK cnditin, security Vertical Stabilizer - CHECK cnditin Elevatr, and Rudder - CHECK cnditin, freedm f mvement, security, hinges lubricated and free safe Elevatr Trim tab check cable and pulley cnditin Rudder Trim tab check fr prper bend angle Tail Wheel - CHECK cnditin, inflatin, security, lubricatin, pivt blt vertical alignment, main spring blts and clamp secure, return springs secure 6. Fuselage (Left Side) Fabric - CHECK cnditin Windws - CHECK cnditin, cleanliness Aux Fuel Drain Check fr leaks and test fr water 7. Left Wing Wing leading edge and tip free f damage Ailern - CHECK cnditin, freedm f mvement, security, hinges secure Wing Tip - CHECK cnditin Inspect the frnt and rear lift struts fr straightness, dents and ther damage. CHECK strut drain hles t ensure that they are nt plugged and the struts d nt cntain water. If either f the abve cnditins is fund, cntact an authrized aircraft mechanic t determine aircraft airwrthiness. Tie-dwn - REMOVE 8. Left Main Gear Chcks - REMOVE Tires - CHECK cnditin, inflatin Brakes - CHECK cnditin, clips install, hub clean, cable tight Ole undamaged, n leak, expsed strut length similar n bth gear Gear attach blts secure n lseness 9. Nse Sectin Windshield - CHECK cnditin, cleanliness Oil - CHECK quantity level 3-1/2 Qts. Minimum, dip stick secure Fuel - DRAIN gasclatr, CHECK fr leakage Engine Cmpartment - CHECK cnditin, leakage, etc.
Fuel quantity visual check, cap secure, vent clear Muffler pipes secure and tight McDwell Starter cable tight Cwling and Access Panel - CHECK cnditin, security Prpeller and Spinner - CHECK cnditin, security Air Filter - CHECK cnditin. ENGINE PRE START 1. Mags Off 2. Fuel Shut-Off Valve - OPEN 3. Prime (2 shts) r Nt as required, then lck primer 4. Brakes check 5. Carb heat OFF 6. Thrttle Cracked 7. Set Brakes r Tie dwn tail 8. Pull Prp thrugh eight blades 9. Set prp t just prir t impulse firing BEFORE STARTING (als see ntes and warnings belw) 1. Adjust seat 2. Brakes applied 3. Thrttle Cracked ¼ r less 4. Carburetr Heat COLD (IN) 5. Visually Clear area, shut clear t warn thers 6. Mags switch n bth 7. Pull prp thrugh with McDwell Starter 8. Check Oil pressure 20 lbs with 20 sec r shut dwn with mags ff 9. Seat Belts/Shulder Harness - FASTENED 10. Altimeter set t field elevatin 11. Cmpass indicatin crrect 12. Fuel gauge indicatin crrect. 13. Cntrls free 14. Brakes - SET 15. Cabin Dr CLOSED Pull dr clsed slwly and psitin dr handle t hrizntal with dr pulled tight shut, check latch secure with sme pressure t try t push dr pen (windws pen as desired) WARNING D nt attempt t turn ver and/r start the engine by hand unless yu have had prper instructin and experience. If pulling the prpeller thrugh by hand is necessary, be sure the master and magnets are in the OFF psitin and the thrttle clsed. Have a pilt at the cntrls and chck/tie dwn the aircraft. When pulling the prpeller thrugh by hand, treat it as if the ignitin switch is turned n. A lse r brken grund wire n either magnet culd cause the engine t fire.
CAUTION D nt ver-prime r excessively pump the thrttle (carburetr acceleratr pump) due t the resulting fire hazard. The use f the fuel primer will vary with each engine and temperature cnditin. If the engine is warm, little r n prime is required. During cld weather cnditins, 4 t 6 priming strkes may be required. During cld weather peratin (belw 20 degrees F) it is recmmended that the engine be preheated by directing warm air thrugh the pening in the bttm r frnt f the engine cwl. This practice will prlng the service life f the engine and starter. In very cld weather, it is imprtant t use the prper viscsity engine il and t run the engine sufficiently lng t bring the engine il t the nrmal perating temperature. During grund peratin, the mixture shuld be FULL RICH and the carburetr/alternate air COLD t ensure gd engine cling and filtered air. Prlnged idle belw 1000 RPM is nt recmmended due t plug fuling and insufficient cling air when the aircraft is nt in mtin. BEFORE TAXI 1. Cntrls free 2. Clear area 3. Oil temp increasing 4. Oil pressure 30 psi minimum 5. Seat Adjusted and Belts secure 6. Test Brakes after sht rll under lw pwer 7. Check wind and use prper cntrl psitins fr safe taxi RUNUP 1. Head int wind 2. Oil pressure 30 psi minimum 3. Oil temp 100 deg minimum 4. Brakes secure 5. Cntrl stick full aft 6. Thrttle 1700 RPM 7. Left mag (100 RPM drp max) 8. Right mag (100 RPM drp max) 9. Mags switch BOTH 10. Carb heat (75 RPM minimum drp) 11. Static RPM 2150 minimum
12. Idle RPM 800 maximum 13. Cntrls free Take-Off - Nrmal 1. Cntrls - CHECK Free and Crrect 2. Instruments - CHECK 3. Trim - SET fr take-ff 4. Main Fuel Valve - OPEN (IN) 5. Aux Fuel Valve - CLOSED 6. Altimeter - CHECK 7. Windws and Drs - CLOSED AND LATCHED 8. Seat Belts/Harness - FASTENED 9. CLEAR RUNWAY and TRAFFIC PATTERN 10. Take Off 11. Establish Climb Speed Best Angle 50 MPH Best Rate 0-5000 ft 68 MPH Best Rate 5-10000 ft 58 MPH Max Range MGP 60 MPH Cruise (Grss Weight, Sea Level) Thrttle - Set as Desired Trim - Set fr level flight Get n Step fr best cruise Airspeeds Level flight r climb 95 MPH Glide r dive 128 MPH Maneuver 80 MPH Stall 40 MPH Glide 67 MPH Mst Miles Per Gal. 69 MPH Mst Flight Time per Gal. 48 MPH Landing 44 MPH Aircraft landing characteristics are cnventinal. Either wheel landings r full stalls (3 pint) are permissible. During gusty wind cnditins, increase airspeed apprximately 5 MPH abve nrmal, and perfrm a wheel landing.
Full stall (3 pint) landings are recmmended fr sft r rugh fields. Crsswind appraches can best be accmplished by using the wing dwn, tp rudder methd fllwed by either a full stall r wheel landing technique. Keep the lwer wing int the wind after tuchdwn. D nt drp the tail until airspeed is well belw flying speed. CAUTION The use f wheel brakes is nt recmmended until after the tail wheel is in cntact with the grund. Fr maximum braking, the cntrl stick shuld be FULL AFT. Descent shuld be made with enugh pwer t maintain cylinder and il temperatures in the green arc. If pssible, avid windmilling the engine with the prpeller by reducing airspeed r increasing pwer. Landing Brakes - CHECK firm, parking brake OFF Apprach Speed - 60-70 MPH Landing 50, tuch dwn at 40 Shutdwn Brakes (Cl) SET Engine - AT IDLE RPM Magnet Switches OFF Fuel Valve Off Carb Heat (cld) Intercm and Headsets Off Thrttle Clsed Drs and Windws Clsed Check fr Oil leaks r and damage Tie Dwn r Hangar EMERGENCY 1. Maintain level flight 2. Select landing site int wind 3. Turn n ELT 4. Check Seat Belts 5. Best glide 55 MPH 6. Fuel selectr ON 7. Carb heat ON
8. Master switch ON 9. Primer lcked 10. Attempt restart 11. Fly the airplane 12. Ntify 121.5 f yur lcatin n the radi if turned n and available 13. When n Engine start is pssible clse fuel valve and thrttle lck primer 14. Cme in high at lw speed and slip t a landing nce assured