YAK-52 AIRCRAFT, BULLETINS ISSUED BY S.C. AEROSTAR S.A. UNTIL MAY 2000

Item

Bulletin No.

Original /translation record No.

Content in Brief

Bulletins applicable to the following series?

1

152.0.001.1 (1 DK)

K1/K0124

Assurance of bonding of the elevator and the engine lower cowling

780102-790404

2

152.0.0002.1 (2 DK)

K54/K0123

Replacing the oil tank with sump of soldered design by oil tanks with sump of welded design

780102-790406

3

152.0.0009.2 (3 DK)

K2/K068 526803-00

A. Enhancing the reliability of the intake pipe

B. Reinforcing the mixture heat control handle

780102-811215

527001-80

4

152.2.0010.2 (4 DK)

K3/K069

Improving the effectiveness of the AK-50T compressor cooling

780102-800815

5

NOT APPROVED (5 DK)

Replacing the engine control lever with pushbuttons by engine control lever with 2T pushbuttons

NOT APPROVED

6

152.1.0.003.1 (6 DK)

KP- K4/K0124

Replacing the PK-45 starting solenoid with a 4716 starting solenoid

780102-800605

7

152.1.0.004.1 (7 DK)

K5/K0126

Removing the PPNG-15K (E 19) switch "FRONT COCKPIT GENERATOR - OFF - REAR COCKPIT"

780102-800815

8

152.2.0.006.2 (8 R)

K6/K070

Replacing the control bolt 3059A-4-40 and the control bushing 1363950-5-7-8 for fastening the braking lever 525103.01 onto the sleeves of nuts 525103-00 and 525104-00 by the bold 3059A-6-40 and the bushing 525100-92

781102-801103

9

152.2.0.0011.2 (9 DK),

K7/K071

Strengthening of the fin skin

780102-811212 excl. 790204;

790205; 790301;

790309 and 800909

10

152.2.0.0012.2 (10 DK)

K8/K072

Improving the effectiveness of the engine cooling

78102-800815

11

152.1.0.005.2 (11 E)

K9/K073

Stating the fuel tank operating life in flight hours

800802-801006,

include. 800708

12

152.3.0.0015.2 (12 R)

K10/K0127

Improving the operating capability of the reliability of the pneumatic system

780102-800815

13

152.5.0.0020.2 (13 BD)

K11/K074

Modifying the ventilating and air charging device of the pneumatic system

780102-84 4415

14

152.2.0.0007.4 (14 IK)

K12/K075

Advisory bulletin referring to the modifications implemented in the serial production

780102-790105

15

152.2.0.0008.4 (15 E)

K14/K077

Defining the propeller operating life

780102-790105

16

152.2.0.0013.3 (17 DM)

K14/K077

Replacing the over-voltage protection circuit breaker AZP-1MB by a circuit breaker AZP-A2

780102-811707

17

CANCELLED (16DK)

Replacing the 506500-10 bracket by the 526100-10 bracket

CANCELLED

18

152.3.0.0016.1 (18DA)

K15/K0128

Replacing the bolts used for fastening the elevator balance weight by rivets

780101-822501

19

152.4.2.0019.2 (19 R)

Replacing the storage battery type "VARLEY" by a storage battery type 12ASAM-23

78012-822714

20

NOT APPROVED (20 DK)

Strengthening the fitting 52683-62

NOT APPROVED

21

152.2.0.0014.4 (21 E)

K17/K079

Defining the operating life of the engine mount ring

780102-821915

22

CANCELLED (22 IK)

Advisory bulletin concerning the modifications adopted in the serial production

CANCELLED

23

152.3.3.0017.4 (23 E)

K18/K080

Defining the operating life for the airspeed indicator US-450 and the pressure transducer B

822301-822307

24

CANCELLED (24 DM)

Installing the critical angle warning device SSKUA-1 on the airplane

CANCELLED

25

152.3.0.0018.4 (25 E)

K19/K0155

Defining the oil thinning table and the diameter of the fuel to oil intake nozzle

780102-822615

26

CANCELLED (26 DA)

Modifying the overload limit thresholds for the altimeters AM-9S

CANCELLED

27

CANCELLED (27DK)

Securing the valve of the "VARLEY" accumulator connector

CANCELLED

28

152.5.0.0021.2 (28 DA) K20/K081 (18 DA)

A. Modifying the attaching manner of the elevator balance weight.

B. Replacing the fin masking tapes

C. Strengthening the fin masking tapes

D. Defining the bulletin 152.3.0.0010.1

Spare parts kits

8010001-8203024

Spare parts kits

8010001-8310048

780102-822115

29

152.5.0.0025.4 (29 BE)

K21/K082

Advisory bulletin concerning the changes adopted in the serial production

780102-844415

30

152.5.0.0022.2 (30BD)

K22/K083

Replacing the R-2 governor control lever

78-102-844415

31

CANCELLED (31 DK)

Replacing the draining pipe from the fuel system

CANCELLED

32

152.5.0.0023.3 (32 BU)

K23/K084

Replacing the bar 527202-50-9 from the switch panel

780102-833715

33

NOT APPROVED (33 IK)

Advisory bulletin concerning the punch locking of the bolt attaching the middle belt to the fuselage

NOT APPROVED

34

152.5.0.0024.2 (34 BD)

K24/K085

Replacing the nipple 526100-02 a the fuel pump intake

780102-844915

35

CANCELLED (35 DM)

Replacing the pilots' seat belts

CANCELLED

36

152.5.0.0026.2 (36 BD)

K25/K0130

Replacing the bracket 526500-10 from the R-2 governor control system

780102-855707

37

152.5.0.0027.2 (37 BD)

K26/K0132

Replacing the brackets 522007-10 1/2 for suspending the aileron

780102-855615

38

152.5.0.0028.2 (38 R)

K27/K0131

Modifying the overload limit thresholds for the altimeters AM-9S

780102-855815

39

152.5.3.0042.2 (38 DK)

K28/K086

Replacing the wheels 525400-50 for operating the elevator trim tab from the front and rear cockpits

780102-844915

40

152.5.3.0042.2

K29/K087

Marking the PVD pipes

780102-855315

41

152.7.0.0039.3 (41 R)

K30/K088

Removal of the AD-50 pressure switch

78-102-825215 excl. 833710 and

845001

42

152.6.2.0030.2 (42 DK)

K31/K0115

Advisory bulletin concerning the changes adopted in the serial production

780102-855607

43

CANCELLED (43 DM)

New design of the shock-absorber from the PVD system

CANCELLED

44

152.6.0.0034.2 (44 R)

K32/K089

Replacing the rudder trim tab

78-102-856105

excl. 856001

45

152.6.0.0031.2 (45 DK)

K33/K0133

Modifying the fitting 526802-10 and mounting the collar 526802-17

780102-855815

46

CANCELLED (46 DK)

Replacing the pipe at the compressor

CANCELLED

47

152.6.0.0032.2 (47 R)

K34/K0134

Replacing the collar 526200-30 for fastening the draining tank in the oil system

780102-855815

48

152.6.0.0033.2 (48 R)

K35/K0135

Improving the design of the filter box

78102-855915

49

152.7.0.0040.3 (49 R)

K36/K0136

Mounting the fuel tank on three brackets

780102-856215

50

CANCELLED (50 DK)

Removing the screen of the wire connecting the adapter ARK-15M to the pole antenna filter

CANCELLED

51

NOT APPROVED (51 DK)

Thermal, insulation of the storage battery compartment

NOT APPROVED

52

152.6.2.0035.2 (52 R)

K28/K086

Replacing the wheels 525400-50 for operating the elevator trim tab from the front and rear cockpits

780102-822714

53

152.9.0.0072.3 (53 BU)

K75/K0170

A. Replacing the existing control sticks by control sticks of new design

B. Replacing the rear bearing 525101-50

780101-8910115

780102-866415

54

152.7.0.0045.3 (54 R) 5

K38/K091

Advisory bulletin concerning the changes adopted in the serial production?

A. Replacing all the safety washers

B. Installing special washers 525900-38 and 52900-39 1/2

780101-85641 excl. 856001

55

152.7.0.0049.3 (55 BU)

K39/K0116

Replacing the wires at the transducers P1 6T by wires type BPGRL

780102-867315

56

152.6.0.0036.4 (56 BE)

K40/K092

Defining the "Servicing instruction"

780102-866415

57

152.7.0.0050.2 (57 DK)

K41/K0121

A. Replacing the exhaust manifold 526801-00 and the air heater 517601-00

B. Replacing the air heater 527601-00 and the fittings

526801-270 and 526801-190

C. Replacing the fittings 526801-270 and 526801- 190

780102-855115

855201-866515

58

152.8.0.0059.2 (58 BD)

K57/K0159

Additional stiffening of the throttle and propeller

pitch levers:

A. Mounting the free fastener at frame C4

B. Mounting the free fastener between frames C1 and C2

780102-866415

780102-877715

59

152.6.0.0037.2 (59 R)

K42/K093

Strengthening the wing joint

780102-866415

60

152.6.0.0038.2 (60 R)

K43/K0192

Replacing the fuselage beam

780102-866415

61

NOT APPROVED (61 DK)

Replacing the material for the undercarriage up lock balls

NOT APPROVED

62

152.7.0.0043.2 (62 DK)

K44/K094

Improving the security of the aileron balance weight

856001-866915

63

NOT APPROVED (63 DK)

Replacing the ailerons

NOT APPROVED

64

CANCELLED (64 DA)

Inspection of the material for the control sticks pivots

CANCELLED

65

NOT APPROVED (65 DK)

Checking the wing-to-fuselage joint at frames C3 and C8

NOT APPROVED

66

152.7.0.0044.3 (66 R)

K45/K095

Replacing the joining bolts at frames C3 and C8

780102-866515

67

152.7.0.0046.3 (67 R)

Fastening the fittings of the hot air intake filter box

780102-866915

68

152.7.0.0041.2 (68 BD)

K47/K097

Securing the cock for adjusting the rudder pedal travel

780102-86615

69

152.7.0.0047.3 (69 BU)

K48/K098

Strengthening the supports for fastening the inverter PT-200T

780102-877615

70

152.8.0.0060.3 (70 BU)

K58/K0160

Improving the fastening of the rudder balance weight

780102-877615

71

152.7.0.0048.3 (71 BD)

K49/K099

Replacing the draining tank 526202-00

780102-877615

72

152.7.0.0051.2 (72 BD)

K50/K0100

Checking the rotating assembly of the flap control system

780102-867315

73

152.7.0.0052.4 (73 BE)

K51/K0101

Modifying the "Servicing regulation" as a result of the Bulletin 72 BD becoming effective

780102-867315

74

152.7.0.0054.3 (74 BU)

K52/K0102

Mounting the propeller pitch and throttle quadrants limiters

780102-834015

75

152.8.0.0061.3 (75 BU)

K65/K0195

Replacing the bracket 522007-10-1/2 for hanging the aileron on rib N7 and stiffening of the N7 rib tip wall

780102-877515

76

152.7.0.0055.2 (76 BD)

K53/K0103

Replacing the ball joints body from the power plant control system

780102-877503

77

NOT APPROVED (77 BE)

Modifying the "Servicing instruction"

NOT APPROVED

78

152.8.0.0057.4 (79 BE)

K66/K0193

Modifying the documentations accompanying the YAK-52 airplanes

780102-877301

79

152.8.0.0056.2 (78 BD)

K65/K0158

Replacing the oil sump filter

780102-888715

80

152.8.0.0065.2 (80 BD)

K61/K0196

Additional information to the bulletin 59R

780102-888515

81

152.9.0.0084.2 (81 BD) 780102-8910015

K84/K0181

Replacing the material for the front cockpit warning box

Replacing the material for the front cockpit

82

152.8.0.0058.2 (82 BD)

K59/K0161

Replacing the bracket for fastening the rudder to the fuselage

780102-899015

83

152.8.0.0067.2 (83 BD) K71/K0184

Stiffening the rib of the elevator trailing edge

780102-888915

84

152.9.2.0073.2 (84 BD)

K74/K0175

Mounting the casing of the R-27 governor

78-102-889009 except for the airplane 888615

85

152.8.0.0062.3 (85 BU)

K60/K0197

Mounting the flaps control seals

780102-888713 except for the airplane 878415

86

152.8.0.0063.4 (86 BE)

K63/K0187

Modifying the "Servicing instruction"

780102-888615

87

152.8.0.0064.2 (88 BD)

K64/K0194

Replacing the joint bolts at frames 3 and 8

Additional information to the bulletin 66R

780102-888915

88

152.8.0.0068.2 (87 BD)

K68/K0185

Additional information to the bulletin 59R

780102-866415

89

152.9.0.0069.2 (89 BD)

K60/K0188

Fuselage - machining of the beam

780102-889115

90

152.9.3.0078.2 (90 BD)

K78/K0178

Removal of GA-6 and AGI -1 from both cockpits when performing highly acrobatic flights

780102-889015

91

152.9.0.0079.4 (91 BE)

K79/K0176

Modifying the technical documentation as a result of applying the bulletin 90BD

780102-889015

92

152.9.0.0070.2 (92 BD)

K70/K0163

Strengthening the aileron rib no. 1

780102-889215

93

152.9.0.0.0071.2 (93 BD)

K67/K0183

A. Modifying the elevator balance weight

B. Mounting the rudder supports by using bolts

C. Strengthening the fin rib no. 3

780102-878315

780102-889115

780102-899015

94

152.9.0.0077.2 (94 BU)

K83/K0180

Removing the risk of water vapor freezing in the pneumatic system

780102-889009

95

152.9.0.0080.4 (95 BE)

K80/K0165 (K0173)

Modifying the technical documentation due to entering in force of the bulletin 94 BD

780102-889009

96

152.8.0.0064.4 (96 BE)

K62/K0186

Expanding the airplane lifetime up to the first overhaul

780102-889303

97

152.0.0.0089.2 (97 BU)

K89/K0203

Modifying the belt system

844701-9010815

98

152.0.0.0090.2 (98 BE)

K90/K0204

Modifying the technical documentation due to entering in force of the bulletin 97 BD

844701-901815

99

152.9.0.0083.2 (99 BD)

K76/K0171

Strengthening the ventilating tubes of the generator and compressor

780102-899915

100

152.9.0.0074.2 (100 BD)

K81/K0174

Securing the nuts for fastening the circuit breaker AZP-A2

780102-899515

101

152.9.2.0081.2 (101 BD)

K77/K0177

Strengthening the support for fastening the circuit breaker AZP-A2

780102-899515

102

152.9.0.0075.4 (102 BE)

K85/K0182

Defining the "Servicing instruction" for mounting the nose wheel

780102-899415

103

152.1.0.0095.2 (103 BD)

Separate draining for the fuel tank

780102-899715

104

152.1.0.0096.4 (104 BE)

Modifying the technical documentation due to Bulletin 103 BD coming into force

780102-899715

105

152.9.0.0076.4 (105 BE)

K82/K0179

Modifying the "Servicing regulation" concerning the routing of the control system cables

780102-899615

106

152.9.0.0082.2 (106 BD)

K72/K0164

Machining of the air heater valve

780102-899815

107

152.1.0.0094.2 (107 BD)

Mounting a strap for strengthening the wing longeron

780102-9111215

108

152.0.0.0088.2 (108 BD)

K86/K0198

Modifying the ball lock at the main leg actuator

780102-888409

109

152.0.0.0086.4 (109 BE)

K73/K0172

Modifying the initial operating life established for the landing gear units from 5000 to 6000 landings

780102-899815

110

152.0.0.0086.4 (110 BE)

K87/K0199

Modifying the "Servicing regulation" and the "Servicing instruction"

780102-899815

111

152.0.0.0091.4 (111 BD)

K91/K0205

Strengthening the frame "O"

780102-9010615

112

152.9.0.0087.2 (112 Bd)

Modifying the passage of the control rods through the firewall and the engine baffler

780102-9010615

113

152.0.0.0092.2 (113 BD)

A. Replacing any worn-out guide rails of the sliding canopies

B. Mounting the rubber gaskets on the r.h. canopy

780102-9010915

114

152.0.0.0093.2 (114 BE)

Modifying the technical documentation due bulletin 113 BD coming into force