Description
Eurocopter AS550 C3 Aircraft Maintenance Manual – Volume 1 of 7
This is Volume 1 of the seven-volume Aircraft Maintenance Manual (AMM) for the Eurocopter AS550 C3 helicopter. Published by Eurocopter and maintained through successive revisions up to the 2012 issue cycle, this volume delivers the foundational maintenance, inspection, and servicing information for the AS550 C3 platform. It covers ATA chapters 01 through 24, from general aircraft data and time limits through to electrical power generation and distribution. Whether you are performing a scheduled inspection, troubleshooting an electrical fault, servicing the air-conditioning system, or looking up structural dimensions, this Eurocopter AS550 C3 Aircraft Maintenance Manual Volume 1 provides the approved procedures and data you need.
File Details
- Manual Type: Aircraft Maintenance Manual (AMM)
- Brand: Eurocopter
- Model: AS550 C3
- Volume: Volume 1 of 7
- Language: English
- Page Count: 620 pages
- File Format: PDF
- Document Number: Temporary Revision 004a
- Issue Date: 2012.11.05
- Structural Numbering: ATA Specification No. 100
Chapters Covered in This Volume
- 01 – General: List of consumable materials, task numbering system
- 05 – Times Limits / Maintenance Checks: 144-month intervals, major inspection, Type F inspection, daily checks, unscheduled maintenance procedures including rotor overspeed, overtorque, hard landing, lightning strike, freewheel jerks, oil leaks, fuel contamination, engine health checks, contaminated oil circuits, immersion, vibration analysis
- 06 – Dimensions and Areas: Location of main structural components with coordinate reference stations
- 07 – Lifting and Shoring: General safety instructions, lifting procedures, portable crane usage, jacking-up, air transport disassembly and assembly on pallets
- 08 – Leveling and Weighing: Weighing procedures, balance correction, leveling
- 09 – Towing and Taxiing: Towing procedures with lifting and taxiing devices
- 10 – Parking, Covering and Mooring: Preservation definitions, short-term and long-term preservation and depreservation, periodic inspection of preserved assemblies, mooring procedures, blade folding and spreading
- 11 – Placards and Markings: General safety instructions referencing FLM Section 2
- 12 – Servicing: Filling and draining gearboxes, cleaning procedures, preventive measures for sandy atmosphere and severe climatic conditions, coaxial circuit continuity and insulation checks
- 21 – Air-Conditioning: Demisting and heating systems, fault isolation, removal and installation of valves and ducts, air conditioning with refrigerant including compressor, condenser, evaporators, desiccator bottle, filling and draining procedures, functional tests, detailed inspection
- 23 – Communications: General safety instructions for radio communications
- 24 – Electrical Power: Ground power supply, DC power supply system, starter/generator removal and installation, electrical master box, battery removal and installation, electrical bonding checks, circuit breaker replacement, 250VA AC generation fault isolation, battery temperature warning light tests
What This Volume Enables You to Do
This Eurocopter AS550 C3 Aircraft Maintenance Manual Volume 1 is not a generic guide. It is the manufacturer’s own publication, structured around ATA 100 chapter-section-subject numbering, with each task containing applicable documents, special tools, materials, routine replacement parts, job set-up, procedure, and close-up sections. The maintenance tasks cover operational and intermediate levels, giving line mechanics and workshop technicians the approved procedures for everything from routine daily checks to major structural inspections.
The 05 chapter alone contains unscheduled maintenance procedures that address the most critical events an AS550 C3 can experience: rotor overspeed with damage calculation tables and prescribed component replacement based on NR thresholds, overtorque procedures with MGB damage calculation formulas, hard landing inspections covering airframe distortion and component checks, lightning strike procedures including magnetization measurements and bonding braid inspection, freewheel jerk diagnosis, gearbox oil leak assessment, fuel contamination treatment, and post-immersion operations. These are the procedures that keep a helicopter airworthy after abnormal events, and they are presented with the precision you would expect from Eurocopter engineering.
The 24 chapter gives you complete DC power system fault isolation tables, functional test sequences for battery, ground power, and generator systems, starter/generator brush service life calculation, electrical bonding measurement values for every major component, and detailed battery temperature warning light test procedures. Whether you are chasing an intermittent electrical fault or performing a scheduled bonding check, the resistance limits and test steps are all here.
Complete PDF Bookmark Tree
Complete Bookmarks
The complete bookmarks in the “Eurocopter AS550 C3 Aircraft Maintenance Manual Volume 1 of 7 – AMM PDF” are as follows:
AS550 C3 – AIRCRAFT MAINTENANCE MANUALp. 1
HIGHLIGHTSp. 3
RECORD OF REVISIONSp. 5
RECORD OF TEMPORARY REVISIONSp. 7
LIST OF EFFECTIVE DOCUMENTARY UNITS COMPOSITION OF THE TEMPORARY REVISIONp. 9
LIST OF EFFECTIVE DOCUMENTARY UNITSp. 11
INTRODUCTIONp. 13
LIST OF SERVICE BULLETINp. 35
CHAPTER LISTINGp. 37
+01 – GENERALp. 39
01 – LIST OF EFFECTIVE DOCUMENTARY UNITSp. 39
+01-00-00 – Consumable Materialsp. 41
01-00-00, 2-1 – List of consumable materialsp. 41
+01-20-00 – Task new numberingp. 59
01-20-00, 2-1 – Task new numberingp. 59
+05 – TIMES LIMITS / MAINTENANCE CHECKSp. 83
05 – LIST OF EFFECTIVE DOCUMENTARY UNITSp. 83
+05-24-00 – 144 Month Intervalsp. 87
05-24-00, 6-1 – Major Inspectionp. 87
+05-32-00 – FAA Complementary Inspectionp. 95
05-32-00, 6-1 – Type F Inspectionp. 95
+05-40-00 – Daily Checksp. 97
05-40-00, 3-1 – General Safety Instructionsp. 97
05-40-00, 6-2 – Checking the optional equipmentp. 101
05-40-00, 6-3 – Additional Operation – Cold Weather or very Cold Weatherp. 109
05-40-00, 6-4 – Check before the first flight (BFF)p. 115
05-40-00, 6-5 – Turn Around Check (TA)p. 121
05-40-00, 6-6 – Checks after the last flight of the day (ALF)p. 125
+05-50-00 – Unscheduled Maintenance Checksp. 133
05-50-00, 6-1 – Procedure After Detection of Chips Illumination of "MGB P" and / or "MGB TEMP" Warning Lights – TGB / MGBp. 133
05-50-00, 6-3 – Steps to be Taken After Rotor Overspeedp. 139
05-50-00, 6-4a – Procedure After Overtorque PRE MOD 074302p. 143
05-50-00, 6-4b – Procedure After Overtorque POST MOD 074302p. 151
05-50-00, 6-5a – Procedure After a Hard Landing PRE MOD 074302p. 159
05-50-00, 6-5b – Procedure After a Hard Landing POST MOD 074302p. 165
05-50-00, 6-6 – Procedure After Impact on a Main Rotor Bladep. 171
05-50-00, 6-7 – Steps to be Taken After Impact/Unbalance on the Tail Rotor Bladep. 175
05-50-00, 6-8 – Steps to be Taken for Non-Rotating Blades in Gustsp. 181
05-50-00, 6-9 – Procedure After Flight in Strong Turbulencep. 183
05-50-00, 6-10 – Steps to be Taken on Aircraft Struck by Lightningp. 185
05-50-00, 6-11 – Procedure After Sudden Application of the Main Rotor Brakep. 193
05-50-00, 6-12 – Procedure After Jerks on the Freewheelp. 195
05-50-00, 6-14 – Procedure After Oil Leaks from the Gearboxesp. 199
05-50-00, 6-16 – Procedure After Fuel Contaminationp. 203
05-50-00, 6-17 – Procedure After an Engine-health Check – (No Torque Margin Engine)p. 205
05-50-00, 6-19 – Measures Required in Case of a Contaminated Engine Oil Circuitp. 207
05-50-00, 6-20 – Actions to be taken in the events of abnormal behaviour of helicopter on the ground, with rotor spinningp. 209
05-50-00, 6-21a – Diagnosis of anomalies through vibration analysisp. 213
05-50-00, 6-21b – Diagnosis of anomalies through vibration analysis using STEADY Control adjustment equipementp. 227
05-50-00, 6-24 – Operation to be carried out after immersionp. 245
+05-60-00 – Calendar Inspectionsp. 259
05-60-00, 6-1 – Transmission Components – Main Rotor Drive / Tail Rotor Drivep. 259
+06 – DIMENSIONS AND AREASp. 265
06 – LIST OF EFFECTIVE DOCUMENTARY UNITSp. 265
+06-00-00 – Dimensions And Areasp. 267
06-00-00, 3-1 – Location of the Main Components of the Structure – Helicopterp. 267
+07 – LIFTING AND SHORINGp. 269
07 – LIST OF EFFECTIVE DOCUMENTARY UNITSp. 269
+07-00-00 – Lifting and Shoringp. 271
07-00-00, 3-1 – General Safety Instructions – Lifting and Shoringp. 271
07-00-00, 3-2 – Lifting – Helicopterp. 273
07-00-00, 3-3a – Removal / Installation – Portable crane 350A913000.05p. 277
07-00-00, 3-3b – Removal / Installation – Portable Crane 355A91-3040-06 and PRE MOD 074302p. 283
+07-10-00 – Jacking-up – Helicopterp. 287
07-10-00, 3-1 – Jacking-up – Helicopterp. 287
+07-51-00 – Transportp. 291
07-51-00, 2-5 – Air transport on 20 Ft pallets (6.1 m) / Disassembly-Helicopterp. 291
07-51-00, 2-6 – Air transport on 20 Ft pallets (6.1 m) / Assembly-Helicopterp. 301
+08 – LEVELING AND WEIGHINGp. 307
08 – LIST OF EFFECTIVE DOCUMENTARY UNITSp. 307
+08-10-00 – Weighingp. 309
08-10-00, 3-1 – Weighing – Helicopterp. 309
08-10-00, 3-2 – Balance correction – Aircraftp. 311
+08-20-00 – Levelingp. 317
08-20-00, 3-1 – Leveling – Helicopterp. 317
+09 – TOWING AND TAXIINGp. 321
09 – LIST OF EFFECTIVE DOCUMENTARY UNITSp. 321
+09-10-00 – Towing and Taxiingp. 323
09-10-00, 3-1 – Towing – Helicopterp. 323
+10 – PARKING, COVERING AND MOORINGp. 327
10 – LIST OF EFFECTIVE DOCUMENTARY UNITSp. 327
+10-10-00 – Parking and Coveringp. 329
10-10-00, 2-1 – Preservation and protection of the complete aircraft – Definitionp. 329
10-10-00, 3-1 – Parking – Helicopterp. 333
10-10-00, 3-2 – Covering – Helicopterp. 337
10-10-00, 3-4 – Short Term Preservation – Helicopterp. 341
10-10-00, 3-5 – Short Term Depreservation – Helicoptersp. 349
10-10-00, 3-6 – Long Term Preservation – Helicopterp. 355
10-10-00, 3-7 – Long Term Depreservation – Helicopterp. 361
10-10-00, 3-8 – Periodic Inspection and Maintenance of Removed and Preserved Assembliesp. 367
+10-20-00 – Mooringp. 369
10-20-00, 3-1 – Mooring – Helicopterp. 369
10-20-00, 3-2 – Folding / Spreading – Blades (Marine type)p. 375
10-20-00, 3-3 – Folding / Spreading – Bladesp. 383
+11 – PLACARDS AND MARKINGSp. 387
11 – LIST OF EFFECTIVE DOCUMENTARY UNITSp. 387
+11-00-00 – Placards and Markingsp. 389
11-00-00, 3-1 – General Safety Instructions – Placards and Markingsp. 389
+12 – SERVICINGp. 391
12 – LIST OF EFFECTIVE DOCUMENTARY UNITSp. 391
+12-10-00 – Filling / Drainingp. 393
12-10-00, 3-1 – Filling / Draining – Gearboxesp. 393
+12-30-00 – Unscheduled Servicing Operationsp. 397
12-30-00, 3-1 – Cleaning – Helicopterp. 397
12-30-00, 3-2 – Preventive Measures for Operation in Sandy Atmosphere – Helicopterp. 401
12-30-00, 3-4a – Preventive Measures for Operation in Severe Climatic Conditions – Helicopter (PRE MOD 077207)p. 403
12-30-00, 3-4b – Preventive Measures for Operation in Severe Climatic Conditions – Helicopter (POST MOD 077207)p. 413
12-30-00, 3-5 – Method for Checking – Continuity / Insulation of Coaxial Circuitsp. 421
+21 – AIR-CONDITIONINGp. 423
21 – LIST OF EFFECTIVE DOCUMENTARY UNITSp. 423
+21-00-00 – Air conditionningp. 427
21-00-00, 3-1 – General Safety Instructions – Air Conditioningp. 427
+21-21-00 – Ventilation / Demistingp. 429
21-21-00, 1-1 – Fault Isolation – Demisting / Heatingp. 429
21-21-00, 4-1 – Removal / Installation – Demisting or Heating valves POST MOD 073332 and with long type consolep. 431
21-21-00, 4-1a – Removal / Installation – Demisting or Heating Cocks PRE MOD 073332p. 437
21-21-00, 4-1b – Removal / Installation – Demisting or Heating Cocks POST MOD 073332p. 441
21-21-00, 4-2 – Removal / Installation – Demisting or Heating Ductsp. 445
21-21-00, 6-1 – Inspection / Check – Heating Ductsp. 451
+21-51-00 – Air Conditioningp. 453
21-51-00, 3-1 – General Safety Instructions – Air Conditioning Systemp. 453
+21-51-10 – Air Conditioning With Refrigerantp. 457
21-51-10, 1-1 – Fault Isolation – Air conditioning with refrigerantp. 457
21-51-10, 3-1a – Filling / Draining – Air Conditioning System with filling bench 703A95-7200-02p. 461
21-51-10, 3-1b – Filling / Draining – Air Conditioning System with filling bench 703A95-7220-01p. 469
21-51-10, 4-1a – Removal / Installation – Air Conditioning System Compressorp. 481
21-51-10, 4-1b – Removal / Installation – Air Conditioning System Compressor with POLY-V pulley and beltp. 485
21-51-10, 4-2 – Removal / Installation – Air Conditioning System Condenserp. 489
21-51-10, 4-3 – Removal / Installation – Front Air Conditioning System Evaporatorp. 493
21-51-10, 4-4 – Removal / Installation – Rear Air Conditioning System Evaporatorp. 497
21-51-10, 4-8 – Removal / Installation – Dessicator bottlep. 501
21-51-10, 5-1 – Functional Tests – Air Conditioning System with Refrigerantp. 505
21-51-10, 6-1 – Check – Air Conditioning System with Refrigerantp. 507
21-51-10, 6-2 – Check – Detailed Inspection of the Air Conditioning System with Refrigerantp. 511
+23 – COMMUNICATIONSp. 513
23 – LIST OF EFFECTIVE DOCUMENTARY UNITSp. 513
+23-00-00 – Communication – Servicingp. 515
23-00-00, 3-1 – General Safety Instructions – Radio Communicationsp. 515
+24 – ELECTRICAL POWERp. 517
24 – LIST OF EFFECTIVE DOCUMENTARY UNITSp. 517
+24-00-00 – Electrical powerp. 521
24-00-00, 2-1a – Electrical Power Supply on the Ground PRE MOD 074280p. 521
24-00-00, 2-1b – Electrical Power Supply on the Ground POST MOD 074280p. 525
24-00-00, 3-1 – General Safety Instructions – Electrical Power Supply Systemp. 529
24-00-00, 6-1 – Check – Electrical Power Supply Systemp. 531
24-00-00, 6-2 – Check – Electrical Bonding of Helicopterp. 533
24-00-00, 8-1 – Replacement – Circuit breaker (POST MOD 073273)(POST MOD 073274)p. 541
+24-22-00 – 250VA A/C Generationp. 543
24-22-00, 1-1 – Fault Isolation – A/C Generation 250VAp. 543
+24-30-00 – DC Power Supply Systemp. 547
24-30-00, 1-1 – Fault Isolation – DC Power Systemp. 547
24-30-00, 5-1 – Functional Tests – DC Electrical Generationp. 551
24-30-00, 5-1a – Functional Tests – DC Power Supply System (PRE MOD 073273)p. 555
24-30-00, 5-1b – Functional Tests – DC Power Supply System (POST MOD 073273)p. 557
24-30-00, 5-3 – Functional Tests – Cold weather starting (POST MOD OP3828)p. 559
24-30-00, 5-4 – Fault Isolation – DC Power Systemp. 563
+24-31-00 – Starter / Generatorp. 569
24-31-00, 4-1a – Removal / Installation – Starter / Generatorp. 569
24-31-00, 4-1b – Removal / Installation – Starter / Generator POST MOD 074302p. 575
24-31-00, 6-1 – Check – Starter / Generatorp. 581
+24-31-01 – APC Stater / Generatorp. 583
24-31-01, 4-1 – Removal /Installation – Brushes on APC Starter / Generatorp. 583
24-31-01, 6-1 – Check and Determination of Remaining Brush service life – APC Starter / Generatorp. 589
+24-31-02 – AUXILEC Stater / Generatorp. 593
24-31-02, 4-1 – Removal / Installation – Brushes on AUXILEC Starter / Generatorp. 593
24-31-02, 6-1 – Dimensional Check of Brushes – AUXILEC Starter / Generatorp. 597
+24-32-00 – Electrical Master Boxp. 601
24-32-00, 4-1 – Removal / Installation – Electrical Master Boxp. 601
24-32-00, 5-1 – Adjustment of Electrical Master Box Voltage Controlp. 605
+24-33-00 – Batteryp. 609
24-33-00, 2-1 – Cleaning the battery compartmentp. 609
24-33-00, 4-1 – Removal / Installation – Batteryp. 611
24-33-00, 5-1 – Functional Tests – Battery Temperature Warning Lightp. 615
24-33-00, 5-2 – Checking the Charge Level of SERMAT Emergency Battery EE 0033p. 619
The 10 chapter’s preservation and depreservation procedures are invaluable for operators who need to put an AS550 C3 into storage or return it to service. Short-term preservation covers a 6-month maximum with 2-month inspection intervals, while long-term preservation covers removal and preservation of all mechanical assemblies. The mooring procedures include normal, bad weather, and marine mooring configurations with specified rope angles and torque values.
The 21 chapter provides everything needed to maintain the air-conditioning system, from fault isolation tables that map symptoms to probable causes and corrective actions, through component removal and installation, to the precise filling procedures using the 703A95-7200-02 or 703A95-7220-01 filling benches. The refrigerant handling safety instructions alone are worth the price of admission, covering proper procedures for R134a, oil injection quantities, leak detection, and system preservation.
Why This Manual Matters
Helicopter maintenance is not a place for guesswork. The Eurocopter AS550 C3 has specific torque values, inspection criteria, wear limits, and service intervals that must be followed exactly. Using incorrect procedures can lead to component failure, reduced aircraft availability, or worse. This manual provides the correct specifications and approved procedures directly from the manufacturer, ensuring that every task you perform meets Eurocopter’s standards.
The wiring and hydraulic diagrams, exploded views, and detailed illustrations throughout the volume help you identify components, understand system routing, and perform removal and installation correctly. The symbology tables decode the graphic symbols used in the maintenance publications, so you can read system schematics with confidence.
Instant PDF Delivery
When you purchase this Eurocopter AS550 C3 Aircraft Maintenance Manual Volume 1, you receive an instant PDF download. There is no shipping, no waiting, and no physical book to handle. The PDF can be stored on any device, printed for use in the hangar, and searched for the specific task or specification you need. Whether you are working on a single repair or performing a complete inspection, this manual gives you the information at your fingertips.
This is Volume 1 of 7, covering chapters 01 through 24. Volumes 2 through 7 cover the remaining ATA chapters including equipment and furnishings, fire protection, fuel system, hydraulic power, landing gear, lighting, navigation, doors, fuselage, stabilizer, windows, main rotor, main rotor drive, tail rotor, tail rotor drive, rotor flight controls, power plant, fuel control system, engine controls, engine indicating, engine oil, starting, and electrical harnesses.
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