ICA IS-28B2 Lark Flight And Maintenance Manual Download

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Summary of Contents for IS-28B2 Lark

Page 1: ...IGHT AND MAINTENANCE MANUAL IS 28 B2 GLIDER This manual is applicable for gliders with serial numbers beginning with 141 and for gliders with serial numbers up to 140 to which the Modification Kit No...

Page 2: ...nates the chapter and the second denotes the page within the chapter The pilot nust kn the contents of this manual Additionally the manual must kept permanently within reach of the pilot during all fl...

Page 3: ...ption 1 3 Abbreviations and Definitions Drawings PAGE Fig 1 1 Fig 1 2 Glider Drawing 3 views Control Locations in the Front Seat The 15 2882 is a tandem two seat gl ider completely metallic with T ele...

Page 4: ...0 Press 2 5 atm Wheel Brake Main wheel only L 2 COCKPIT DESCRIPTION The front cockpit is as shown in Fig 1 2 Both tandem seats are covered by a plexiglass canopy hinged on the right On the left side o...

Page 5: ...1 JI 1 I l V f c _ _ I f I II C 1 I J I I __ J __ n l n _ l I I j 1 i frim tab r L f I II I II 1 I control I I J 11 II I i l I _ I Ji If _ _ J I I _ _ _ _ _ lJ I _ 7 T _ _ i I I I I 1 j I I I lil h I...

Page 6: ...ntrol is on the upper central portion fa the front instrument panel Ballast Box is located on the floor just forward of the front Stick 1 3 ABBREVIATIONS AND DEFINITIONS OSTIV Organization Scientifiqu...

Page 7: ...raction control Canopy Opening and Canopy Jettison Tow Release control Front Air Scoop control Main Wing Junction Lock direction Miscellaneous other markings 2 1 CERTIFICATION The glider is certified...

Page 8: ...ts useadditional lead ballast in the tray provided on the front seat floor forward of stick Ballast is required for solo flight when the pilot weight incl parachute is less than 183 lbs Ballast weight...

Page 9: ...1 LU l l m 111 no lS mon I i I l I 2 0 1 I J 0 7 J IL t I tJ 811G7 891103 5 1LtO I 7 I 871 I I 1 127 I Gr I 78 II 11T J R I 4 A I f IE 0 2 9 2 AEROBATIC MANEUVERING SPEED PLACARD painted in red AER08...

Page 10: ...c Bctunted G b o nn 1 max vSdJ L U il J M IL1Ur 1 6AGH e lO AD 4 lb Ret bc alr br ke t n r 1 C T 1 C j 0 _ _L Leru j _l no 3 Sc Lla nG l air cont 1 01 Retractc 1 j I I J i D T l r I J d on or heel con...

Page 11: ...C pt t 0 0 ettl _ v W 40 0 deflection 150 deflection 10 deflectio 5 r eutr21 position n r 01 gr c Y cola _ J l 1 iT C t l r j 0 e lli r jG Ild_ H Divini pas i ti 0 1 r J i f ontrc2 t12ct cclouI oJ I R...

Page 12: ...ction for C r on n r l Y r J v I J 1 C i C tUB t e ir t 10 indic te Ji 2C io s l r t iT C J 0 r 10i J v v l 0J l Release by pulli g Q f I re ule t on t I J ij t I l OCI _ 1 _ r LU _a LOCK D 1 Lock and...

Page 13: ...possible d Contact speed approximately 35 kts spoiler shut 3 2 SPIN RECOVERY The glider can commence to spin as a result of pilot errors In this event apply rudder opposite to the direction of rotatio...

Page 14: ...achment and clearance f landing gear and shock absorber condition pressure in main and tail tubes g Air scoop condition Check the following in the cockpit both seats a landing gear retraction control...

Page 15: ...set 6 Control stick rudder operation normal 7 Instruments checked 8 Altimeter checked and set 9 Canopy closed and locked 10 Tow cable connected and release tested 11 Wings levelled pattern clear 4 3 1...

Page 16: ...aerotow Install the required ballast in the boxes provided on the floor forward of the control stick depending on pilot s weight See Chapter 2 table 2 2 After fastening and adjusting belts and harness...

Page 17: ...peed is 59 62 knots At this speed the controls are easy to handle and their efficiency is very good If for whatever reason the aerotow speed falls belo 54 kts lower the flap to the 1 setting 50 deflec...

Page 18: ...low the glider by slight backpressure on the stick Under these conditions the touchd n speed may lower to approximately 35 knots just barely above stall Extend the spoiler completely during roll out A...

Page 19: ...ness If control is lost or if the Air Speed Indicator or the Turn Bank are damaged during cloud flight the pilot must leave the cloud as soon as possible In such a situation all controls must be broug...

Page 20: ...ol stop 4 4 3 3 In the inverted position speed is at a minimum Easing the stick slowly forward provides for rounding out of the loop on its upper side Gradual re application of rearward stick complete...

Page 21: ...The folloy dng performance data and restrictions refer to the ma d1 1url weights Solo Aerobatic Dual Utility 5 2 AXIMUM GLIDE RATIO 11L G lbs max 1301 1bs max Note Speeds in this chapter are CAS The I...

Page 22: ...108 J WI Flight I t 46 7 19 5 I I I PIj gbt weif ht 5 0 1 1 130 1 1 l JI _ l i J i L_ _ _ L _ __ j _1__ J j _ __ J __ _ _ I r I r CI1 HTG l 1IO C l l c _u 11L U C l Cl1V LOrJ 1 c _ _ 7 5 eL_ _lJQ l i...

Page 23: ...t 1 9 121 5 k 100 111 37 I Ii 87 99 i5 5 I e6 II I W 1 j t t 1 h r I O _ 0 1S0 2 c I t21 0 2 Q Ih1 I I I r FliGht weicht 520 l r 1146 lb li l ight weicht 59b L I 13 1 lb J t 1 t p c 11c ul J tcc1 I 1...

Page 24: ...i 5 3 J i1g POSrrIOlJ ERRCPS CO CTION BY l 1 I j I I I J Fig 5 4 i 1 21 nn T i C 1 0 r _...

Page 25: ...or oil bearing products since they will soften and craze crack the plastic _6 1 2 PAINTED SURFACES Painted surfaces may be kept bright by washing with water and mild soap or detergent using a soft clo...

Page 26: ...g 6 1 FUSELAGE WING JUNCTION DETAIL c c Either wing may be mounted first Each wing is brought to the fuselage wing horizontal by three persons two at butt one at tip then are mated to the fuselage ali...

Page 27: ...UNTING The horizontal stabilizer can be in three positions 1 Completely dismounted 2 Folded along the fin 3 Mounted in the flight position To mount the horizontal tail assembly Fig 6 3 from the folded...

Page 28: ...the fin leading edge assuring a fit on the fin For attaching raise the glider tail by means of a bar passed through the raising tube Fasten the dolly upper half to the lower part by the two latching c...

Page 29: ...abnormal events have occurred such as transport accidents off field landings hard landings abnormal operation etc When performing these inspections particularly insist on careful examination of elemen...

Page 30: ...ication procedures are located in the control diagrams lubrication points must be cleaned of dust and old grease by washing with gasoline or other organic solvent After washing apply fresh grease Use...

Page 31: ...ts and 3 years of operation For aircraft instruments produced by the PZL company no total life is indicated 6 3 3 ADJUSTMENT The adjustments performed by the manufacturing plant shall be checked durin...

Page 32: ...nding g2nr wh0cl 4 Retraction fork shaft 5 Tailwhocl shaft 6 Releases 7 Rudder control SYSt0 8 Elevator centrol 9 Ailerons contr31 3ystcn c 11 Flaps control sJstem 12 Fuselage wing junct ic n fittings...

Page 33: ...1 j L J COt TRpI 1 Cables pulleys bearings 2 Control coIuml and under floor area 3 Trim tab 4 Hinges joints 5 RuJder bnr 8ssembly 6 Skin and control surfncea structuro 3 Cl o o if provided 1 Glider ou...

Page 34: ...using an eyedropper For other maintenancet TOST instructions shall be consulted 6 4 3 CANOPY MAINTENANCE Checking starts with a test jettison simulation on the ground Check the hinges and locking syte...

Page 35: ...tl I I I II f I _ l i 1 jl h U i A V ll p r _ J t4o f ill1 J r _ 7 j A _ I Y rr t 8 Y 4 5 j _ 13 _ J 7 0 7 6 i nT nor 1 I If I I L I I 1 1 II I I Z t1 I I __ I I t I I I J J r I I I 1 jP A 1 iL 1 f r...

Page 36: ...19 j y 7 d _ _ r r 7 I f _ _ J r 0 e jJ l IJ _ __ _ _ t u __ I _ __ y 1 20 L ff _ v 7 25 l 0 I I AJ l ijX 4 f f Q oJ r I _ I CrJ Y 2 j 1 1 LA 2Q 11 I I i ln J I 1Jln 22 f J L 1 VI rIOTJ Tho rigurG3 i...

Page 37: ...in the dr8 ing correspond to the ite s in the Sp8re Parts Illustr9ted Cnt91oeue 9 11 13 Adjustment Hqnd lub 1 1 7 11 13 2 14 II I IIJ I 1_ 8 10 12 i H c J H J 1 _ j t l H I J v J J Fig 6 8 LANDING GEA...

Page 38: ...4 to release the shock absorber air valve item 7 5 Connect the filling tap to a compressed air or nitrogen cylinder WARNING Do NOT fill the shock absorber with oxygen Explosion danger exists 6 Screw t...

Page 39: ...1 d I r c I I i Fig cc l SLOC j ION...

Page 40: ...ns are detected perform the necessary corrective measures After completing all operations close the inspection covers 6 4 6 MAINTENANCE OF CONTROLS 6 4 6 1 6 4 6 2 ELEVATOR CONTROL The control is tran...

Page 41: ...3211 wi reo Recommended fuselage cab 1e tension is 15 6 6 lbs The glider may not be accepted for flight unless the control of at least one of the trim surfaces is connected 6 4 6 5 SPOILER and WHEEL...

Page 42: ...gue j j NOTE ELEVATOR CONTROL Fig 6 12 r _ __ _ r R Adjl J C trn nt WlV1 V Ibnd lob _ A __ H t f r l r t j f J r v t j p 311 If I 26 3 o 32 14 ffi 3 j 3 0 n lib 1 T V 13 r j i j 2 C 12 1 0 TJ 29 Ii 7...

Page 43: ...he figures in the drawing correspond to the items in the Spare Parts Illustrated Catalogue NOTE 7 1 r J r 9 i 0 I J I 6 R J J rI Hand lub A j 1 1 L 4 RL C tl t r j 4 lJ4 il l v R I 401 II 1 oJ 1 J I F...

Page 44: ...h l i rl D 1 c _ I _ r 2 o J Y f 1 1 I l_ 1 11 1 tJ I _ 1__ __ I S J I 1 I y I I I j tt1 1 L 1 i Th2 J C Sd7 I L 1 e1 _ r _ AA ii I i 8 c 1 jL J 4 12 5 R 6 J 13 No rE The igures in the 21 21 1 drawlng...

Page 45: ...y t C __ _ i _ A _ 2 1 11 n i jJ 7 J l _ 1 I I 1 I 30 1 I I I I r 1 i I 37 28 TRIM TAB CONTHOL 18 15 Fig 6 15 10 d _ _ __ ___ _ _ c c 27_C flB c j _ l f Y J 2S r t 6 5 WJ 22 I It Ad _ Justment V Hand...

Page 46: ...I I 1 1 i I AIR BRAKE AND WHEEL ER t KR Adjustment Hand lub Fig 6 16 I R R H e j c to J 1 0 J co H t C i l 0 1 VI I i I I I i c r1 h lj tfu 13 17 i iC o l I _ C OI l O _ j I l I _c Q L I c o __ I r _...

Page 47: ...I 8 The figures in the drawine corresDond to the ite 8 in the Spare Purta Illustratsc Catnlogu NOTE I L 7 FLAP CONTROL Fig 6 19 I 14 7 11 16 17 r r It 1 I J O R x t 1juotm nt rlf n j Hand lub _ _ _ A...

Page 48: ...I fter rcp drs lno lfications additions involving during which riveted ass mblies or parts from the wing fuselage junction have been dismounted To level make rneasurements according to the level Iing...

Page 49: ...front fuselage and the center of gravity of the additional instrument s or eauipment The other notations are defined in Fig 6 27 6 6 RECOMMENDATIONS FOR TRAILER TRANSPORT The following are recommende...

Page 50: ...Tee 8 Cross joL t 9 Tota preSSGre S jurce 10 Static pressure sources 11 Total pressure plpe 12 Static pressure pipes The static pressure sources are marked on the fus laee by a red circle of 2 pprox 1...

Page 51: ...1 ij I t 1 4 1 C rl J I i...

Page 52: ...b oM r s c rd l Ur 0 0 J J APHIL 197 3 Page 6 42...

Page 53: ...4 I 7D 1 I r i _ J An 4 o r 6 n I C Z tt l T Ll 2 I 77T 1 1 l i I CII I 1 I _E J J r r 1 t C J c i cm 6 __ _m __ I c t J 1 1 r Co __ l I _ 1 H c c r j __ I r J I I 1 __ I __ I L li I _ r r I I I I H...

Page 54: ...n _ le eli 9 card poge 17 1 cokulatior1 of the bolonce Empty so dplone 2 CalcuIClfjo f fhe balance limits 1 Do d 1 I 0 l r 1 0 Gn D1Gn T DzGn J 1 Xo 10 MAC M A C 100 X1 2l o M C I y G G Gp r d d1 M AC...

Page 55: ...l j j 1 1 l Il J L L __ IL _ _ _ __ __ _ _ __ front ilot I 83 183 ili It 47 p 1 r 0D 9 C 90 1nQ c I i 22 t I I 6 17 r I IWO tJi 10 i m 1 j T t 1 1 r 7t I ll i f I i 7 l J I J Applic able to SOjilpJan...

Page 56: ...2 GLIDER 1 PROJECT HORIZONTAL LINE AT FORWARD SEAT WEIGHT 2 PROJECTVERTI 6L 1 J _A _ i_ I 3HT I 3 IF INTERSECTION OF THE LINES IS WITHIN THE ENVELOPE jTHE_c IS V I THIN L ITiJ ur n l n_t 1 4 GROSS WEI...

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