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  3. Engine Maintenance

ENGINE
MAINTENANCE

Engines are key components of aircraft. Their reliability and durability are achieved by using the most modern technologies in the production process. But even the most modern engine requires periodic inspections and checks, replacement of units and routine repairs. The complexity of the design of aircraft engines requires a high level of organizational culture, a strict quality control system, qualified personnel and special high-precision equipment.

List of engine maintenance activities:

No. p/p Subcategory Type of component
(drawing
number/ P/N)		 Name of
component		 Operating
documentation
(manual,
instruction)		 Type of work
1 2 3 4 5 6
Air conditioning and air pressure regulation systems in cabin
1 C1 2077 Pressure regulator RE Yak-42, section 21.30.00.
RTE 2077 RE; TU Yak-40, issue
12, TC No. 9		 Cleaning.
Testing on the SVS stand. Replacement of conical
fittings.
2 C1 2176D Valve RE Yak-42, sec. 21.30.00.
RTE 2176D RE; TU Yak-40, issue
12, TC No. 10, 11		 Cleaning, washing valve plates, seats,
calibrated holes, filter screens.
Testing on the SVS stand. Washing the valve.
Washing
filter nozzles. Adjustment of the valve
limiter P excess.
3 C1 469KE Valve RE Yak-42, section 21.30.00.
RTE 469KE RE;
TU Yak-40, issue 12,
TC No. 10, 11		 Cleaning, washing valve plates, seats,
calibrated holes, filter screens.
Testing on the SVS stand.
Tightening of fittings and tees.
Nozzle cleaning
4 C1 81233А010001 Heater-Air Conditioner CMM 21-52-55
Revision No: 01
Original Issue: Aug 31/20		 Cleaning
5 C1 81232А010001 Double Heat Exchanger CMM 21-52-27
Revision No: 02
Original Issue: Aug 31/20		 Cleaning
6 C1 p/n 93253A010001 Bleed Temperature Sensor CMM 36-10-06
Revision No: 03
Original Issue: Oct 31/14		 Check for compliance with NTP.
Adjustment.
Automatic flight control system, autopilots
7 C2 6С3.099.004-1 Roll calculator NTP of autopilot instruments
«Kremen-40» 1997		 Check for compliance with NTP.
Adjustment.
8 C2 6С3.099.005-1 Pitch computer NTP of autopilot instruments
"Kremen-40" 1997		 Checking for compliance with NTP.
Adjustment.
Communication equipment and flight and navigation equipment
9 C3 PP "Baklan-20" (modifications) VHF radio station RE Yak-42, section 23.20.00
RTE VHF radio station
"BAKLAN"
IZH1.101.017/018 RE		 Check for compliance with NTP.
Adjustment.
10 C3 Remote control (modifications) Control panel Yak-42 RE, section 23.20.00
RTE VHF radio station "BAKLAN"
IZH1.101.017/018 RE		 Check for compliance with NTP.
Adjustment.
11 C3 SO-72M Aircraft transponder Yak-42 RE, section 113.31.00
Aircraft transponder RE
SO-72M
EU1.234.224 RE		 Inspection and check.
Adjustment and testing.
Routine repair
12 C3 p/n 822-1109-020 Air Data Computer CMM 34-18-08
ED/REV NO 2/37 Oct 15/18		 TL5186/P battery replacement. (CMM does not have a battery
replacement, there is a board replacement in repair)
Power and lighting systems
13   409CH2, 437CH14 Battery  CMM 24-30-25 Periodical check
Regular check
General overhaul
14   4076-10 (4076-23) batteries CMM 24-31-41 Periodical check
Regular check
General overhaul
15   4071-1 (4071-10), 4076
(4076-1)		   CMM 24-30-99 Periodical check
Regular check
General overhaul
16   2778-4, 40118-2,
405CH10, 405CH23		   CMM 24-30-99 Periodical check
Regular check
General overhaul
17 C5 26108, 2758, 276CH1,
276CH10, 2778-1		   CMM 24-30-99 Periodical check
Regular check
General overhaul
18   1658-6, 2376 (2376-1,
2376-4), 2378-2		   CMM 24-30-99 Periodical check
Regular check
General overhaul
19   1201 (12101), 151CH1,
151CH2, 1656-6		 Аккумуляторные
батареи		 CMM 24-30-99 Periodical check
Regular check
General overhaul
20   025271-000 (Model
4318CH24)		   CMM 24-32-20 Check
21   015920-000 (40176-4,
40176-7)		   CMM 24-32-03 Periodical check
Regular check
General overhaul
22   176CH6   CMM 24-30-99 Periodical check
Regular check
General overhaul
23   4078-2 (40678-2)   CMM 24-31-15 Periodical check
Regular check
General overhaul
24   025962-000 (539CH2)   CMM 24-32-21 Check
25   025930-000 (Model
4317CH1)		   CMM 24-30-99 Periodical check
Regular check
General overhaul
26   025897-000 (176CH)   CMM 24-30-99 Periodical check
Regular check
General overhaul
27 C5 025255-000 (176CH3)   CMM 24-32-19 Periodical check
Regular check
General overhaul
28   024643-000 (Model
4017CH3)		 Battery CMM 24-32-10 Check
29   024637-000 (1756-1) batteries CMM 24-32-06 Periodical check
Regular check
General overhaul
30   024453-000 (Model
40178-24);
020583-000 (Model
4078-3);
025008-000 (Model
40178-26).		   CMM 24-32-05 Periodical check
Regular check
General overhaul
31   024147-000 (Type
539CH-1 5319CH1)		   CMM 24-31-07 Check
32   022835-000 (1756-3)   CMM 24-32-06 Periodical check
Regular check
General overhaul
33   018550-000 (4579)   CMM 24-31-05 Check
34 C5 441CH1   CMM 24-30-12 Periodical check
Regular check
General overhaul
35   024055-000
(Model 427CK-1)		 Аккумуляторные
батареи		 CMM 24-32-09 Periodical check
Regular check
General overhaul
36   024054-000
(Model 257CH-9)		   CMM 24-32-01 Periodical check
Regular check
General overhaul
37   VARTA (Hawker)
20FP25Н1C-R (YAK-40);
20FR38H1C-R (YAK-42)		   VARTA (Hawker)
Maintenance
Manual
5 30 03 RE		 Maintenance.
Cleaning. Disassembly and replacement of faulty
elements.
38 C5 20NKBN-40(UZ) Rechargeable
batteries		 Manual for TE 20NKBN-
40(UZ)
G73.536.610 RE		 Checks.
Troubleshooting.
Discharge/charge.
Disassembly/assembly.
Battery replacement.
39   20НКБН-25(УЗ)   Technological instructions
Ministry of Transport of the Russian Federation 2006.		 Checks.
Troubleshooting.
Discharge/charge.
Disassembly/assembly.
Battery replacement.
40   ВРS7/2013-1А/2013BR   CMM 25-65-02
Revision No. 15, Dated January
2012		 Testng and fault isolation
Check
41   M3-XX-XX   CMM 24-34-08
Rev 15 JUN 17/20		 #ИМЯ?
42   30874-001   CMM 24-34-02
Rev 2 MAY 07/04		 -BATTERY MAINTENANCE
-BATTERY RECONDITIONING
Household, special and emergency rescue equipment
43   ОР-1-2-20-30   РТЭ fire extinguishers  
  С6   Fire extinguisher OR 1 and OR 2 Routine maintenance. Discharging/charging.
44   OR-2-6-20-30   APS-6600-3000 RE  
45 С6 Р-855УМ, Р-855А1 Emergency
radio station		 RTE radio stations:
R-855UM - 2.000.098 RE;
R-855A1 - 1.100.009 RE		 Testing the TRC for water resistance.
Testing the power, frequency, modularity
of the TRC, and the sensitivity of the RRM settings. Lubrication.
Eliminating the TRC's water resistance.
46 С6 ТНО-2 Inflatable ramp Technical
operation manual
2TNO-9319-0 RE RO Yak-42		 Maintenance.
Repair of inflatable elements.
47 С6 A336112-157;
A336115-001/E
A336115-003/E;
A336115-007/E
A336116-011/F;
A336116-013/B1
A336116-015/C;
A336116-017/A.1		 Door lining
for aircraft type RRJ-95		 AMM RRJ-A-25-23-15-01A01-
610A-A		 Door lining repair
Door lining painting
  С6 A336116-019/F;
A336116-021/B
A336116-023/C;
A336116-025/A.1
A336116-027/F;
A336116-028/F
A336116-029/C;
A336116-030/C
A336116-033/B;
A336116-035/B
A336116-041/B;
A336116-042/B.1
A336116-043/B;		   AMM RRJ-A-25-23-15-01A01-
257A-В		  
    A336116-044/B.1
A336116-045/B;
A336116-047/A.1
A336116-048/A;
A336116-051/B
A336116-053/B;
A336116-054/B
A336116-061;
A336116-063
A336116-065;
A704115-001/A
A704115-003/A;
A704115-005/A
A704115-007/A;
A704116-011/A
A704116-013/A;
A704116-015/A
A704116-017/A;
A704116-019/A;
A704116-021/A;
A704116-023/A;		 Door lining
for aircraft type RRJ-95		 AMM RRJ-A-25-23-15-01A01-
610A-A
AMM RRJ-A-25-23-15-01A01-
257A-В		 Door lining repair
Door lining painting
  С6 A704116-025/A;
A704116-027/A;
A704116-028/A;
A704116-029/A
A704116-030/A;
A704116-033/A
A704116-035/A;
A704116-039;
A704116-041/A
A704116-042/A;
A704116-043/A
A704116-044/A;
A704116-045/A A704116-
047/A; A704116-048/A;
A704116-051/A;
A704116-053/A;
A704116-054/A;
A704116-061/A;
A704116-063/A;
A704116-065/A
A704116-066/A
B112115-001;
B112115-003
B112115-007;
B112116-011
B112116-019;
B112116-027
B112116-028
p/n K1542528769-009,
K1542528769-015;
K1542528769-021;
K1542528769-022		 Door lining
for aircraft type RRJ-95		 AMM RRJ-A-25-23-15-01A01-
610A-A
AMM RRJ-A-25-23-15-01A01-
257A-В		 Door lining repair
Door lining painting
48 С6 4311500-00-55-00,
4311501-00-55-00,
4310000-00-55		 High Speed Oven
DF110/115		 CMM 25-32-11
Rev no. 17
Issue date Jul 31/19		 Очистка (Cleaning)
49 С6 A336111-011;
A336111-011/E
A336111-013;
A336111-013/E
A336111-015;
A336111-015/E
A704111-011;
A704111-013;
A704111-015;
A704111-017;
A704111-035;
A704111-043;
A704111-045;
A704111-047;
A704111-049;
B009111-011;
B009111-013;
B112111-035;
B112111-047;
B112111-049		 Panel cladding
of the passenger cabin
for aircraft RRJ-95		 AMM RRJ-A-25-23-00-01A01-
662A-A;		 Repair of passenger
cabin panels
50 С6 C406-1 Series Emergency Locator
Transmitter		 CMM 25-62-10
REV. K
ISSUE DATE Feb 7/20		 Replacing the battery
  C6 453-6611 Emergency Locator
Transmitter		 CMM 25-62-31 Replacing the battery
Engine and APU systems
  С7 HATS0021-12-26
HATS0021-16-39		 Болт SPM PowerJet 70-32-13-230-
011		 FLUORESCENT INSPECTION
51   0780870040;
1565474;
320146;
340079А;
340129А;
340146;
758.049-1;
758.089-1;
798049;
798089		   Instruction 63  
52 С7 760-Б-415 (агр. 760Б);
760-Б-415 (агр. 934);		 Filter Instruction 63;
TU Yak-40, issue 6, TC No. 17		 Flushing on UZU
53   8Д2.966.0221;
8Д2.966.236;
8Д2.966.660;
8Д2.966.675;
8Д2.966.697-09;
8Д2.966.967-08;
8Д5.886.045		   Instruction 63;
(8D2.966.675 (“RTE GP-21”,
GP21.000 RE (Yak-42)		  
54 С7 2704554-2 Honeywell APU Starter
RE-220 GX		 AMM 49−42−01−110−801
Aug 17/2020		 Cleaning
Aircraft control systems
55 С8 УС-52-01 Amplifier
of the servo drive		 RE Yak-42, section 27.20.00.
RTE US-52
6S2.002.052 RE		 Maintenance.
Checking the NTP.
Adjustment
56 С8 RAU-108 var.2 Steering unit
control		 RE Yak-42, section 27.20.00.
RTE RAU-108
6S1.600.553-RE		 Lubrication
Maintenance.
Checking NTP. Adjustment
57 С8 ДУСУ-1-6 Unified angular
velocity sensor		 Yak-42 RE, section 27.20.00
RTE DUSU-1-6
6S1.600.553-RE		 Maintenance.
NTP check.
58 С9 365-604-903-0;
366-604-905-0		 Filter Bulletin #73-0100 R02
Bulletin #73-0103 R01		  
59 С9 8Д2.966.656;
8Д5.886.528-1
(350.003В);
8Д2.966.660;
8Д2.966.697-08;
798089;
ИМ-3;
8Д2.966.697-07;
Н8Т360;
Н8Т361;
8Д2.966.713;
8Д5.886.152;
656521		 Filter Instruction 63 Cleaning the fuel filter element.
Flushing on the UZU.
Cleaning the fuel filter element.
Flushing on the UZU.
Гидросистемы
60 С12 8Д2.966.022-2, (-3, -4, -6);
340044А;
2.20.5535.020000;
2.20.5535.020001;
2.20.5535.020002;
340098А;
2.20.5535.020003;
340127; 340043А;
340042А;
2.20.5586.090.000;
8Д2.966.034-18;
8Д2.966.034-2;
8Д2.966.034-4;		 Filter Instruction 63 Flushing on the UZU.
Indication and recording systems
61 C13 MLP-14-5 Yak-42
Recorder		 RTE of the onboard
flight mode
recording system
MSRP-64 142.20.08		 Maintenance.
Cleaning. Replacement of magnetic tape and belts
C14: Chassis
62 C14 KT 140D (basic), Wheel TU Yak-40, issue. 25, part 1,
TC No. 2		 Replacing a tire. Inspection of the drum and
half flange.
Drum repair.
63 С14 K327A (front) Yak-40 TU Yak-40.
issue 25, part 2, TC No. 1.
RE-4		 Replacing the tire.
Inspection of the drum, spacer sleeve
64 С14 KT 141E (main), Wheel Yak-42 RE, Sec. 32.41.00.
RTE KT141E.000 RE2
Sec. 032.41.00.		 Tire replacement. Adjustment of spacer sleeve.
Drum and flange eddy current testing.
65 С14 KT 151 (front) Yak-42 Yak-42 RE, section 32.42.00.
RTE KT151.000 RE,
section 032.41.00		 Replacement of retaining ring and internal blocks of
ball bearings. Paintwork restoration.
67 С14 З-1560, Tire change,
З-1563,
З-1563-1,
З-1599, OVH Tire change		   CMM
32-48-23;
32-48-22;
32-48-30		 Tire Change Examination
Wheel NDT Examination
68 С14 Main landing gear wheels
chassis:
5010571 (Bombardier PN
601R85123−1),
5010571−1 (Bombardier
PN 601R85123−3),
5010571−2 (Bombardier
PN 601R85123−5),		   CMM
32-46-27
32-42-28
32-40-98		 Check
Repair
69 С14 5012373   CMM 32-42-28
Rev 6 May 15/08		  
70 С14 Main landing gear wheels
chassis:
5010598 (Bombardier
PN 601R85003−1),
5010598-1,
5010598АВ,
5010598-1AB
(Bombardier PN
601R85003−3)		   CMM 32-46-27
Rev 6 Jan 15/13		 Check
Repair
71 С14 З-1609-1,
З-1610,
З-1610-1		   CMM
32-48-28;
32-48-29;
32-41-13;		  
        32-41-20 Check
72 С14 3-1531-1, OVH
3-1531-3		   CMM
32-41-13 rev 6
30 oct 2012		 Repair
73 С14 3-1530   CMM
32-41-20 rev 4 data 11 feb
2011		  
Oxygen equipment
76 C15 BKP-4-3-210 Yak-42 RTE BKP-4-3-210
TK-7859-800-01 RE,
Sec. 35.14.01		 O2 bleeding.
Degreasing.
Leak testing.
77 С15 БКП-2-2-210 Oxygen
equipment		 RTE BKP-2-2-210.
TK-7859-800 RE,
section 35.31.01		 Replacing UZR-2.
Disassembling and washing the filter of the charging
nipple.
Blowing out the safety valve.
78 С15 КМ-114,
БКО-5		   RTE BKO-5, KM-114,
9B2.931258 RE,
section 35.14.03		 Checking tightness, resistance,
pressure.
Cleaning, disinfection.
Replacing the mask headband.
Pneumatic and vacuum systems
79   398-21(Cleaning)   CMM 36-10-09  
80   3179746-1, Cleaning   CMM 36-10-09  
81 С17 А5856Н
337-459-901,
4022535FLO1		 Filter CMM 36-11-69
CMM 36-10-33		 Flushing on UZU.
Anti-icing and fire-fighting systems
82 С18 УБШ-3-2 Yak-40 Fire Extinguisher   Discharging/charging.
83 C18 2-10-4(modifications),
UBSh-3-2		 Yak-42 Fire Extinguisher RTE fire extinguishers types 1 and 2
APS-1685 RE		 Activation of the fire extinguisher and checking
the pressure gauge.
Replacing the extinguishing agent.
Troubleshooting.
84 С18 p/n 3501-1 Toilet smoke sensor
and cover		 CMM 26-14-01
Oct 15/09		 Cleaning
85 С18 p/n 2156-55 BGO smoke sensor CMM 26-16-19
Sep 25/98		 Очистка (Cleaning)
86 С18 473597-18,
473597-19		 Smoke detector
assemblies		 CMM 26-10-73
Rev 9 Jun 28/10		 Очистка (Cleaning)
  C18 PU90-471WR1, PU90-
471WR2, PU90-471WR3,
PU90-471WR4, PU90-
471WS, PU481WR1,
PU481WR2, PU481WR3,
PU481WR4, PU481WS		 Smoke Detector
Assembly		 CMM 26-10-05 Очистка (Cleaning)
Конструкция планера ВС
87 С20 YAK-40, YAK-42, BD-700-
1A11/1А10 (Global-
5000/6000), BD-100-
1A10 (Challenger
300/350), CL-600-2B19
(CRJ-100/200, Challenger
850), RRJ-95		 Airframe design (RTE, RO, TU) Yak-42, Yak-40
AMM BD-700-1A11/1A10
(Global-5000/6000)
AMM BD-100-1A10 (Challenger
300/350)
AMM CL-600-2B19 (CRJ-
100/200, Challenger 850), AMM
RRJ-95		 Maintenance.
Routine repairs.
88 С20 T7.92.0247.000.000.70/D
T7.92.0247.000.000.70/E
T7.92.0247.000.000.70/F
T7.92.0247.000.000.70/H
T7.92.0247.000.000.70/I		 Nose fairing SRM RRJ-A-53-13-24-01A01-
661A-A
SRM RRJ-A-53-13-24-07A01-
664A-A
SRM RRJ-A-53-13-24-08A01-
664A-A
SRM RRJ-A-51-75-02-01A01-
028A-A
SRM RRJ-A-51-71-01-01A01-
663A-A		 Definition of acceptable damage
Repair of through holes.
Paintwork repair
Dent repair