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Č á á Č á á á á Ltd. Glasflügel 304 S Type Certificate No.: Date of Issue: 08/14 Pages identified by “Appr” are approved by EASA: Signature: ..........Authority: ..........Stamp: Original date of approval: ..........Approved under Ref. No.: ..........
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Ltd. Record of revisions Any revision of the present manual, except actual weighing data, must be recorded in the following table and in case of approved Sections endorsed by the responsible airworthiness authority. The new or amended text in the revised page will be indicated by a black vertical line in the left hand margin, and the Revision No.
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Ltd. List of Effective Pages Section Page Date of Section Page Date of Issue Issue Appr. 08/14 08/14 2-10 Appr. 08/14 08/14 2-11 Appr. 08/14 08/14 08/14 Appr. 08/14 08/14 Appr. 08/14 08/14 08/14 08/14 Appr. 08/14 08/14 Appr. 08/14 08/14 Appr.
Ltd. Table of Contents Section General ..................1 (a non-approved section) Limitations ................2 (an approved section) Emergency procedures ............3 (an approved section) Normal procedures ..............4 (an approved section) Performance ................5 (a partly approved section) Weight and balance / equipment list ........6 (a non-approved section) Sailplane and systems description ........
Ltd. SECTION 1 1. General Introduction Certification basis Warnings, cautions and notes Descriptive data Three-view drawing Document No.: G304S/AFM Date of Issue: 08/14...
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Ltd. Introduction The sailplane flight manual has been prepared to provide pilots with information for the safe and efficient operation of the Glasflügel 304 S sailplane. This manual includes the material required to be furnished to the pilot by JAR-22. It also contains supplemental data supplied by the sailplane manufacturer.
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Ltd. Warnings, cautions and notes The following definitions apply to warnings, cautions and notes in the flight manual. WARNING Means that the non-observation of the corresponding procedure leads to an immediate or important degradation of the flight safety. CAUTION Means that the non-observation of the corresponding procedure leads to a minor or to a more or less long term degradation of the flight safety.
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Ltd. Descriptive data Glasflügel 304 S is single seat 18m flapped sailplane of 18m FAI class, constructed from fiber reinforced plastics (FRP), featuring camber-changing flaps and a T-tail (with fixed horizontal stabilizer and elevator) Sailplane description Fuselage The fuselage shell is pure CFRP shell construction reinforced with Carbon Aramid hybrid fabrics in the pilot area, therefore capable of large energy absorption.
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Ltd. Cockpit interior Back-rest and rudder pedals are adjustable in flight. The back-rest rotation point can only be adjusted on the ground. When the canopy is opened the instrument carrier pivots upward and renders possible a comfortable and unrestricted pilot entry and exit. The canopy is ventilated by slots in the canopy frame, fresh air for the pilot is provided by an outlet right of the canopy frame.
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Ltd. Basic Technical Data Wing Span ......... 18 m ....59.06 ft Wing area ...... 11.8 m ....127.01 ft Aspect ratio ....27.43 Fuselage Length......6.79 m ....22.28 ft Width ......0.62 m ....2.03 ft Height ......1.48 m ....4.86 ft Cockpit height ....
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Ltd. Three-view drawing Document No.: G304S/AFM Date of Issue: 08/14...
Ltd. SECTION 2 2. Limitations Introduction Airspeed Airspeed indicator markings Weight Center of Gravity Approved maneuvers Maneuvering load factors Flight crew Kinds of operation 2.10 Minimum equipment 2.11 Aerotow 2.12 Other limitations 2.13 Limitations placards Document No.: G304S/AFM Approved Date of Issue: 08/14...
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Ltd. Introduction Section 2 includes operating limitations, instrument markings, and basic placards necessary for safe operation of the sailplane, standard systems and standard equipment. The limitations included in this section and in Section 9. have been approved by the EASA. Airspeed Airspeed limitations and their operational significance are shown below:...
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Ltd. CAUTION Keep in mind, that a difference between Indicated Air Speed (IAS) shown by your airspeed indicator and True Air Speed (TAS) is increasing with an altitude increase. This has no influence on the sailplane strength or load, however due to flutter safety the IAS limits shown in table below must not be exceeded in given altitudes.
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Ltd. Airspeed indicator markings Airspeed indicator markings and their color-code significance are shown below: Marking Value or range IAS Significance [km/h] KIAS [mph] Allowed range for Flaps set to positive position White L – white mark and letter at 85 - 200 45 - 107 52 - 124 160 km/h...
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3.49 kg (7 lbs) of the pilot‘s insufficient weight. Maximum lead ballast capacity of the ballast box is 12 kg (26 lbs). Suitable lead ballast plates are available from HPH Ltd. . Permanent tail water ballast allows to pilot maintain the flight cg position at optimum range.
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Ltd. TRIM PLAN G304S m i n . 90 kg min. 85 kg min. 80 kg min. 75 kg min. 70 kg NORMAL RANGE m ax. 110 kg SAILPLANE EMPTY WEIGHT [ Kg ] Document No.: G304S/AFM Approved Date of Issue: 08/14...
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Ltd. Approved maneuvers This sailplane is certified in the UTILITY category. Intentional aerobatic maneuvers are prohibited. WARNING Aerobatic maneuvers and intentional spins are prohibited. Maneuvering load factors The following load factors may not be exceeded during maneuvers: n = +5.3 at air speed V A = 200 km/h, 107 KIAS, 124 mph -2.65 air brakes retracted...
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Ltd. Flight crew Number of seats ........ 1 Minimum cockpit load ....70 kg 154 lbs Maximum cockpit load ....110 kg 242 lbs WARNING Check the permanent tail water ballast trim before flight. Exceeding the limitation could cause exceeding of the approved aft position and could adversely affect sailplane maneuverability and stability.
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Ltd. • 1 Sailplane Flight Manual • Limitation placards in the cockpit 2.11 Aerotow and winch-launching Aerotow The standard sailplane is fitted with the C.G. release for a towing rope. If a nose hook is installed, we recommend to use this one. Maximum aerotowing speed V ..
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Ltd. 2.13 Limitations placards Document No.: G304S/AFM Approved Date of Issue: 08/14...
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Ltd. WEIGHT LIMITATION MAX.TAKEOFF WEIGHT 600 kg 1322 lbs MAX.WEIGHT OF NON-LIFTING PARTS 373 kg 822 lbs PERMITTED COCKPIT LOAD 70-110 kg 154-242 lbs FOR COCPIT LOAD LIMITATION REFFER TO ACTUAL WEIGHT AND BALANCE DATA AT FLIGHT MANUAL SECTION 6 AIRSPEED LIMITATION IAS V NE Never exceed speed...
Ltd. SECTION 3 3. Emergency procedures Introduction Canopy jettison Bailing out Stall recovery Spin recovery Spiral dive recovery Other emergencies 3.7.1 Wingtip catching in high grass during takeoff 3.7.2 Towing rope release at low height 3.7.3 Flying with uneven water ballast Document No.: G304S/AFM Approved Date of Issue: 08/14...
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Ltd. Introduction Section 3 provides checklist and amplified procedures for coping with emergencies that may occur. Canopy jettison 1. Grasp (from below) the red grips (right and left of the canopy frame) 2. Pull them back 3. Push the canopy upward. Bailing out 1.
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Ltd. Spiral dive recovery 1. Balance the bank by coordinate use of rudder and ailerons controls 2. Recover the dive Other emergencies 3.7.1 Wingtip catching in high grass during takeoff Take-Off's from not mowed grass runways should be avoided both for aerotow and winch-launching.
Ltd. SECTION 4 4. Normal procedures Introduction Rigging and de-rigging Daily inspection Preflight inspection Normal procedures and recommended speeds 4.5.1 Takeoff and climbing 4.5.2 Flight 4.5.3 Approach and landing 4.5.4 Flying with water ballast 4.5.5 High speed flight 4.5.6 Slow speed flight – stall characteristics 4.5.7 Cloud flying 4.5.8...
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Ltd. Introduction Section 4 provides checklist and amplified procedures for the conduct of normal operation. Normal procedures associated with optional systems can be found in section 9. Rigging and de-rigging 4.2.1 Rigging 1. Clean and grease pins and bearings. 2. In the cockpit, the flap lever is set at high speed, the brake lever in the medium position, and the water ballast lever set in the closed position.
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Ltd. 4.2.2 De-rigging 1. Pull front tailplane connection pin out, with the help of the tool, and lift up tailplane. 2. Unlock and remove connecting pins of the wingextensions and apply the hand force to take the wingextension out of the wingtip .
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Ltd. a) Open the cockpit, check if the main pin is installed and locked. b) Visual cockpit control inspection. c) Remove foreign material from fuselage. d) Check tire pressure of main wheel Tire size 5.00-5 Takeoff weight Main wheel pressure [kg] [kPa] e) Check function of tow release, condition and spacing of cable...
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Ltd. a) Check if the front stabilizer attachment bolt is engaged. b) Check for blocked Pitot, gently blow into the Pitot to check ASI function. c) Fit compensatory tube and check line. When blowing against tube, the connected vertical speed indicator registers "climb". d) Check tire pressure in tail wheel...250 kPa.
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Ltd. Preflight inspection 1. Parachute correctly fitted? 2. Safety harness correctly and firmly adjusted? 3. Backrest and pedals locked in comfortable position? 4. All controls and instruments within easy reach? 5. Airbrakes locked? 6. Control check? Free, full and correct movements of controls? 7.
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Ltd. Normal procedures and recommended speeds 4.5.1 Takeoff and climbing Aerotow Approved ropes made of synthetic and natural fibers with length from 40 m (131ft.) may be used for aerotowing. If a nose hook is installed, we recommend to use this one. Nevertheless the C.G.
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Ltd. The main landing gear can be retracted during tow. Force required for the landing gear operation is minimized using the gas spring at the mechanism, therefore slide the control lever slowly and continuously. Should the sailplane be unintentionally displaced laterally, it should be cautiously but immediately steered back to normal aerotow position.
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Ltd. Avoid rapid lift-off maneuvers or low towing speeds. The high wing loading of this sailplane requires the pilot to abort the take-off and release, if the towing speed drops below 95 km/h (51 kts, 59 mph) (with water ballast 110 km/h (59 kts, 68 mph)). If possible, use small cable chutes to prevent deploying at flat climb angles.
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Ltd. 4.5.3 Approach and landing The normal flap setting for landing is at position “L. The normal approach speed with air brakes fully extended and the extended landing gear is approx. 90 km/h (49 KIAS, 56 mph) at the landing weight of 430 kg (948 lbs). Minimal approach speed is 85 km/h (45 KIAS, 52 mph), although flaring with full airbrake could be difficult.
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Ltd. 4.5.4 Flying with water ballast At average climbing speeds of less than 1,5m/sec (2,9kts, 300 ft/min) the use of water ballast does not benefit. This is valid also for flights in tight thermals, which require steep angles of bank. CAUTION Do not add water ballast below O°C (32 because of freezing danger.
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Ltd. CAUTION The water ballast should be emptied before landing. It takes about 4 minutes when the tanks were full. During dumping check if the water is dumped simultaneously from both wings. If water is pouring only from one side than stop the dumping. Permanent tail water ballast tank Permanent tail water ballast tank is located inside of the fin –...
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Ltd. Drainable tail water ballast tank Drainable tail water ballast tank is located inside of the fin – above the permanent tail water ballast tank, in front of the fin spar. Contamination of the filling water must be avoided. Before water ballast is added, check the table in section 6.5 for the maximum weight of water ballast.
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Ltd. 4.5.5 High speed flight During high speed flight, pay attention to the never exceed speed. Refer to 2.2 and 2.3 for the Airspeed limits and Airspeed Indicator Marking. Aileron and rudder full deflections may be applied up to the Maneuvering speed Full control deflections of aileron and rudder are allowable up to V A =200 km/h IAS (107 KIAS, 124 mph).
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Ltd. Pay attention also to the fact, that recovery from dives with airbrakes employed, should be more gentle than with airbrakes deployed (see Ch.: 2.7 load factors). 4.5.6 Slow speed flight – stall characteristics For familiarization with Glasflügel 304 S sailplane, we recommend to perform stalling tests from a straight and level flight, and from a turn of 45°...
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Ltd. Flying with water ballast, AUW = 600 kg With medium and forward C.G. positions you can fly at the minimal steady airspeed with elevator control reaching its stop. The controllability is adequate up to the reach of the longitudinal control rear stop, than, with the elevator fully deflected, the angle of attack cannot be increased no more.
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Ltd. 4.5.7 Cloud flying Cloud flying is prohibited. 4.5.8 High altitude flight CAUTION Keep in mind, that a difference between Indicated Air Speed (IAS) shown by your airspeed indicator and True Air Speed (TAS) is increasing with an altitude increase. This has no influence on the sailplane strength or load, however due to flutter safety the IAS limits shown in table below must not be exceeded in given altitudes.
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Ltd. Continuously operate controls and air brakes at short intervals. During flights with water ballast, note the recommendation under 4.5.4. 4.5.10 Flight in rain Intentional take of at rain is prohibited, because the rain influence on the flight performance was not certified. Nevertheless no degradation of the flight behavior requiring special pilot skills during unintentional flight at rain was reported.
Ltd. SECTION 5 5. Performance Introduction Approved data 5.2.1 Airspeed indicator system calibration 5.2.2 Stall speeds Non-approved further information 5.3.1 Speed polar 5.3.2 Demonstrated crosswind performance Document No.: G304S/AFM Approved Date of Issue: 08/14...
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Ltd. Introduction Section 5 provides approved data for airspeed calibration, stall speeds and non-approved further information. The data in the charts has been computed from actual flight tests with the sailplane using average piloting techniques. Approved data 5.2.1 Airspeed indicator system calibration Airspeed indicator system calibration 304S [ km/h ]...
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Ltd. 5.2.2 Stall speeds Air brakes Flaps Takeoff Weight CG position (% MAC) 464 kg 420 kg 427 kg 1023 lbs 926 lbs 941 lbs 46,4% Retracted 75 km/h 65 km/h 66 km/h “L” 40.4 KIAS 35 KIAS 35.6 KIAS 46.6 mph 40.3mph 41 mph...
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Ltd. Non-approved further information 5.3.1 Speed polar Computed data Speed polar Glasflugel 304S - 18 m 0.00 -0.50 -1.00 -1.50 -2.00 m/S = 31.3 kg/m2 m/S = 50.8 kg/m2 -2.50 m = 370 kg m = 600 kg -3.00 -3.50 T AS ( km/h ) Document No.: G304S/AFM Date of Issue: 08/14...
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Ltd. 5.3.2 Demonstrated crosswind performance During test flights the following takeoff & landing crosswind components were performed. No influence of the weight and CG position combinations to the save, straight and smooth landing was observed. 420 kg (926 lbs) ....19.3 km/h 5.36 m/s 10.4 kts 600 kg (1323 lbs) ....
Ltd. SECTION 6 6. Weight and Balance Introduction Weight and Balance Record and permitted payload- range 6.3 Maximum permitted load of permanent tail water ballast tank 6.4 Maximum permitted load of wing water ballast tank 6.5 Maximum permitted load of drainable tail water ballast tank Document No.: G304S/AFM Date of Issue: 08/14...
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Ltd. Introduction This Section contains the payload range within the sailplane may be safely operated. Procedures for weighing the sailplane and the calculation method for establishing the permitted payload range and a comprehensive list of all equipment available for this sailplane and the installed equipment during the weighing of the sailplane are contained in the applicable Maintenance Manual, Document Number G304S/MM.
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Ltd. Weight and Balance Record and permitted payload- range valid for Serial No.: Empty Permitted cockpit load [kg] or [lbs] weight with without Approved [kg] water ballast water-ballast position ------------- Date behind Fuselage ref. point useful Max. Min. Max. Min. Date Signature [mm]...
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Ltd. Maximum permitted load of permanent tail water ballast tank Permanent tail tank CG position 4215 mm aft of ref. point Total tank capacity - standard. / max. 4.0 l / 4.5 l Permanent tail water ballast allows to pilot maintain the flight cg position at optimum range.
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Ltd. Maximum permitted load of wing water ballast tank Max. AUW 600 kg Wing tanks CG position 225 mm aft of ref. point Total tank capacity 194 l For filling procedure refer to chapter 4.5.4. Follow the table bellow for setting the maximum permitted load of wing water ballast tanks. empty Pilot seat load ( kg ) weight...
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Ltd. Maximum permitted load of drainable tail water ballast tank Drainable tail tank CG position 4215 mm aft of ref. point Total tank capacity WARNING Drainable tail water ballast may be used only for compensating the pitching moment of the wing water ballast load. For filling procedure refer to chapter 4.5.4.
Ltd. SECTION 7 7. GENERAL SAILPLANE AND SYSTEMS DESCRIPTION Introduction Cockpit controls Instrument panel Landing gear system Seats and safety harness Pitot and static system Airbrake system Baggage compartment Water-ballast system Document No.: G304S/AFM Date of Issue: 08/14...
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Ltd. Introduction This Section provides description and operation of the sailplane and its systems. Refer to Section 9, Supplements, for details of optional systems and equipment. Cockpit controls The below listed controls marked by the appropriate placards (refer to 2.13) are installed in the cockpit. More detailed description of some of the systems may be found below.
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Ltd. Flaps Unlock (downwards) grey lever on the Port cockpit side, and select flap setting. Flap settings: L: landing position +2: circling in wide thermals +1: circling in narrow thermals and for aero towing 0: best L/D performance (95 – 125 km/h) -1: normal operation speed (110 –...
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Ltd. Water ballast Water ballast system is operated with a small lever located on the starboard cockpit side. Lever at rear position: Valves open Lever in forward position: Valves close Backrest adjustment Backrest position may be adjusted with a black "T" lever on the starboard cockpit side under the vent slit opening.
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Ltd. Instrument panel For safety reasons, only a CFRP panel made in accordance to the lay-up plan specified by the manufacturer may be used. Instruments of more than 1 kg (2.2 lbs) need additional support beyond the screws provided. This can be done by means of aluminum straps fixed to the box in front of the instrument panel.
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Ltd. Landing gear system The sailplane is fitted with a damped retractable main wheel and auxiliary tail wheel. The main landing gear is operated with a black lever located on the cockpit starboard side. to retract: Unlock black handle, pull backwards, then lock. to extend: Unlock, push black handle forward and lock.
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Ltd. Baggage compartment The baggage compartment may carry up to 10 kg (22 lbs) of baggage including all installed equipment. Water-ballast system The water-ballast system is operated with a small lever located on the starboard side of the cockpit. open valves – lever in rearward position closed valves –...
Ltd. SECTION 8 8. Sailplane handling, care and maintenance Introduction Sailplane inspection periods Sailplane alterations or repairs Ground handling / road transport Cleaning and care Document No.: G304S/AFM Date of Issue: 08/14...
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Ltd. Introduction This Section contains manufacturer's recommended procedures for proper ground handling and servicing of the powered sailplane. It also identifies certain inspection and maintenance requirements which must be followed if the sailplane is to retain that new-plane performance and dependability. It is wise to follow a planned schedule of lubrication and preventive maintenance based on climatic and flying conditions encountered.
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Ltd. Ground handling / road transport The sailplane should only be stored or parked in well ventilated areas. Closed trailers should be equipped with sufficiently large ventilation. Always store with empty water tanks. Take note to store the sailplane without stresses. This is particularly important at higher temperatures.
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Ltd. Cleaning and care Wash the surface only with clean water, sponge and chamois. Never use petrol, alcohol or thinners. Soap additives in water should not be used too often. Polish as often as you wish, but take care not to heat up the surface when using a polishing machine, as otherwise the surface quality will suffer.
Ltd. SECTION 9 9. Supplements Introduction List of inserted supplements Supplements inserted Document No.: G304S/AFM Date of Issue: 08/14...
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Ltd. Introduction List of inserted supplements Date of Doc.No. Title of inserted supplement insertion 08/14 304SFM_Supp_XS 304S Flight Manual Supplement Document No.: G304S/AFM Date of Issue: 08/14...
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Ltd. Supplements inserted 304SFM_Supp_XS - 304S Flight Manual Supplement General This flight manual supplement covers limitations for sailplanes designated by serial numbers formatted XX-S. Introduction Section 2 includes operating limitations, instrument markings, and basic placards necessary for safe operation of the sailplane, standard systems and standard equipment of gliders designated with plate serial numbers formatted XX-S and equipped with wing s.no.
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Ltd. Airspeed Airspeed limitations and their operational significance are shown below: Speed KIAS Remarks [km/h] [mph] Do not exceed this speed in any Never exceed V NE operation and do not use more speed than 1/3 of control deflection Do not exceed this speed except in smooth air, and then only with Rough air V RA...
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Ltd. Airspeed indicator markings Marking Value or range IAS Significance [km/h] KIAS [mph] Allowed range for Flaps set to positive position White L – white mark and letter at 85 - 200 45 - 107 52 - 124 150 km/h +1, +2 –...
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Ltd. 2.13 Limitation placards WEIGHT LIMITATION MAX.TAKEOFF WEIGHT 600 kg 1322 lbs MAX.WEIGHT OF NON-LIFTING PARTS 278.5 kg 613 lbs PERMITTED COCKPIT LOAD 70-110 kg 154-242 lbs FOR COCPIT LOAD LIMITATION REFFER TO ACTUAL WEIGHT AND BALANCE DATA AT FLIGHT MANUAL SECTION 6 AIRSPEED LIMITATION IAS Maneuvering speed 180 km/h...
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