Service Documentation
These documents are provided to support the continued airworthiness of Air Comm systems in the field. Please review each category carefully. There could be several documents applicable to your airframe.
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Service Bulletins
May be mandatory or at the discretion of the operator. Service bulletins contain information regarding upgrades and improvements.
Agusta A109
- Heater (SB A109H-500) Replacement of S-9740EC-2 Check Valve with S-9740EC-3
Agusta A119
Air Conditioning
- SB A119-208Air conditioner performance up-grades and improvements
- SB A119-302Supplemental inspection requirements for the A119 Compressor Mount
- SB A119-303-REV ASupplemental one-time inspection and modification requirements for the A119 Compressor Mount Installation
- SB A119-306-REV DRemoval and Replacement of A119 Air Conditioner Compressor Drive Belt Design Change
- SB A119-502Replacement of Binary Switch ES57010-1 with ES57178-1
- SB A119-604Replacement of Forward Evaporator Assembly A119-6002, with the new S-6118EC-1
- SB A119-620Inspection of the Aft Evaporator mounting brackets, and the addition of spacers between the Evaporator Assembly and the Upper Deck area
- SB A119-622Aft Evaporator Drain Improvements
- SB A119-3010Removal and Replacement of A119 Air Conditioner Compressor Temperature Sensor
- SB A119-3024 REV EInstallation of A119 Air Conditioner Oil Cooler Inlet Screen Assembly, Engine Governor Control Cable Guard and Compressor Drive Belt
Bell 206
- Air Conditioning (SB 206-3010) Removal and replacement of the belt tensioning collar
Bell 222
- Air Conditioning (SB 222-200) Air conditioning system condenser blower and motor assembly change
Bell 407
Air Conditioning
- SB 407-101 Rev AInspection and torquing procedure for the air conditioner compressor drive pulley installation.
- SB 407-300Tail rotor driveshaft bevel washer replacement
- SB 407-301Upgrade of air conditioning compressor drive ring and pulley
- SB 407-3010Removal and replacement of the compressor belt tensioning collar
- SB 407-3526 Rev BTail rotor driveshaft bevel washer replacement
Bell 412
Air Conditioning
- SB 412-200Replacement of compressor mount pivot bolts
- SB 412-201412 Air Conditioner Drive Belt replacement procedure, Compressor installation requirements, Refrigerant charging procedures, and Refrigerant Oil verification procedures.
- SB 412-204Installation of Compressor Anti Cycle Module
- SB 412-304Installation of Speed Reducer Sheave Retainer Plate
- SB 412-203Bell 412 Air Conditioner Aft Evaporator Circuit Breaker Replacement
- SB 412-304-BGInstallation of Belt Guard & Improved Idler Bearing - M412 Cabin Air Conditioning System
- SB 412-306 Rev AInstallation of Compressor Safety Strap
- SB 412-707Air Conditioner Condenser Frame Modification
- SB 412-6004Installation of Forward Drain in 412 Air Conditioner Aft Evaporator
- SB 412-7042 Rev ACondenser Frame Modification
Bell 427
Air Conditioning
- SB 427-302 - Rev AUp-grade and replacement of the Air Conditioner Compressor Drive Belt and Pulleys
Bell 429
Air Conditioning
- SB_429-622_Rev_CImproved drain system for the Bell 429 Helicopter Air Conditioning System Aft Evaporator installations 429EC-622-1 & -2 and 429EC-624-1.
- SB_429-202-1_Rev_AConversion of the 429EC-200-1 Dual Evaporator System equipped with Fasco motors to the 429EC-202-1 Single Evaporator System equipped with Allied motors.
- SB_429-203-1_Rev_AConversion of the Bell 429EC Air Conditioner Electrical Provisions to accommodate the Allied Blower Motors.
- SB 429-928 Rev NCBell Helicopter Model 429 Windshield Defroster Product Improvement
Eurocopter EC135
Air Conditioning
- SB EC135-300Compressor bearing inspection & installation of the EC135-3008-1 Bearing Cover
- SB EC135-302Removal and replacement of the compressor bearing, pulley, and spline shaft
- SB EC135-500Forward Evaporator Plumbing Condensation Prevention Modification
- SB EC135-502Air Conditioner Hi/Lo Pressure Switch Change
- SB EC135-700Condenser Air Inlet & Hi/Lo pressure Switch Up-grade
- SB EC135-8010 rev ncEurocopter EC135 Air Conditioner Aft Evaporator Wiring Harness Blower Motor Connector Upgrade
Eurocopter EC145
Air Conditioning
- SB EC145-624Up-grade of existing Eurocopter EC145 Air Conditioners equipped with the EC145-6028-2 Aft Evaporator Assembly, due to condensation issues in the main cabin overhead & air outlets
- SB EC145-702Up-grade of existing condenser installation, Aircraft S/N 9089
Service Kits
Contain a Bill of Materials and intructions needed to implement a Service Bulletin or Service Letter.
Agusta A119
Air Conditioning
- SK-A119-00Agusta Model A119 Cabin Air Conditioning System Forward Evaporator Additional Insulation Modification
- SK-A119-01Agusta Model A119 Cabin Air Conditioning System Forward Evaporator Freeze Switch and Electrical Bypass Valve Installation Modification
- SK-ES10505-10Replacement of 24 Volt Air Conditioner Compressor Clutch Coil
- SK-A119-02Agusta Model A119 Cabin Air Conditioning System Aft Evaporator Blower Assembly Replacement
- SK-ES10505-11Replacement of Compressor Shaft Seal
Bell 206
Air Conditioning
- SK-ES10505-10Replacement of 24 Volt Air Conditioner Compressor Clutch Coil
- SK-ES10505-11Replacement of Compressor Shaft Seal
- SK-206EC-1Installation of Dual Forward Evaporator
- SK-206EC-2Installation of Temperature Control and High Output Rear Evaporator Blower Assembly
- SK-206EC-682-1Installation of return air duct assy. with existing equipment installed
- SK-S-8022EC-4Bell Helicopters 206 Air Conditioner Evaporator Blower Motor Noise Filter Installation
- SK-206H-501-1Up-grade S-9212EC-9 Hose
- SK-206H-501-2Up-grade S-9212EC-4 Hose Assy.
- SK-9202ECReplacement of Acoustical Foam for S-9202EC -1, -2, -3 Ejector assemblies
- SK-206H-501-3
Bell 407
Air Conditioning
- SK-ES10505-10Replacement of 24 Volt Air Conditioner Compressor Clutch Coil
- SK-407EC-500-1Hardware necessary to return ACC/BEll 407 air conditioner to service once the Airspeed Actuated Pedal Stop (AAPS) 704-004-101/103 is installed on the Bell 407 helicopter
- SK-407EC-502-1Conversion of the Air Comm Corporation 407EC-202-1 Single LH Fwd Evap or 407EC-202-3 Single RH Fwd Evap Air Conditioning System to 407EC-202-2 Dual Fwd Evap Air Conditioning System
Bell 412
Bell 427
Air Conditioning
- SK-ES10505-10Replacement of 24 Volt Air Conditioner Compressor Clutch Coil
- SK-ES10505-11Replacement of Compressor Shaft Seal
- SK-427EC-800-1Replacement of Model 427 Air Conditioner Evaporator & Condenser Blower Motors to eliminate HF radio RF interference
- SK-427EC-800-2Replacement of Model 427 Air Conditioner Brush Type Evaporator & Condenser Blower Motors, with Brushless Motors
- SK-427H-200-1Bell 427 Heater System Improvement Up-grade
- SK-427H-510-F-1Change of Heater Bleed Air Shutoff Valve Orientation
- SK-427H-1000-F-1Change of Heater Bleed Air Particle Separator Valve Orientation
Bell 430
Eurocopter EC120
Air Conditioning
- SK-ES10505-10Replacement of 24 Volt Air Conditioner Compressor Clutch Coil
- SK-ES10505-11Replacement of Compressor Shaft Seal
- SK-S-8022ECEurocopter EC120 Air Conditioner Condenser Motor Noise & Filter Installation
Eurocopter EC130
Air Conditioning
- SK-ES10505-10Replacement of 24 Volt Air Conditioner Compressor Clutch Coil
- SK-ES10505-11Replacement of Compressor Shaft Seal
- SK-EC130-202-1Eurocopter EC130 Air Conditioner Condenser Relocation Instructions
Eurocopter EC135
Air Conditioning
- SK-ES10505-10Replacement of 24 Volt Air Conditioner Compressor Clutch Coil
- SK-ES10505-11Replacement of Compressor Shaft Seal
- SK-S-8022EC-3Eurocopter EC135 Air Conditioner Evaporator Blower Motor Noise Filter Installation
Eurocopter EC145
Air Conditioning
- SK-EC145-622Eurocopter EC145 (BK117 C1 & C2) Aft Evaporator Brushless Blower Motor Up-grade Kit
- SK-EC145-704Eurocopter EC145 (BK117 C1 & C2) Condenser Air Inlet & Pressure Switch Up-grade Kit
MD900
Air Conditioning
- SK-ES10505-10Replacement of 24 Volt Air Conditioner Compressor Clutch Coil
- SK-ES10505-11Replacement of Compressor Shaft Seal
Service Letters
May be mandatory or at the discretion of the operator. Service Letters give guidance and inspection criteria on known service conditions.
Agusta A119
Bell 206
Air Conditioning
- SL310Air conditioning system Condenser Blower Motor Assembly change
- SL304Air Conditioning System Performance Improvement Kit
- SL311 - REV CAir Conditioning System Electrical Change
- SL313 - REV AAir conditioning system charging procedures change R134a
- SL317Air conditioning system. Temperature Control electrical circuit change
- SL316 - REV AReplacement of Forward Evaporator Blower Wheel & Motor Assy.
- SL317AAir conditioning system, Temperature Control Electrical Circuit change
- SL323Replacement of Hi-Output Blower Motor Support Bracket
- SL325Installation of additional R/H forward evaporator in Bell 206 A/B helicopter
- SL330Forward Evaporator Air Outlet Louver Up-grade & Replacement Procedure
- SL206-303Upgrade Kit - Bell 206 Cabin Heater Aft Heater Outlet Flow Control
- SL305Upgrade Kit, Heater Ejector Installations
- SL306Cabin Exhaust Vent Blower Modification
- SL322Engine Bleed Port Gasket - Engine Compartment Bleed Air System
- SL328 - REV ARepair or Replacement of ES26185-1 (4712-7) Firewall shutoff valve
- SL339Test procedures for ES26185-1 / -2 (4712-7) solenoid valves
- SL341Modification of S-9266EC-30 Particle Separator bleed air port
- SL332Hydraulic System Pump change
Bell 407
Air Conditioning
- SL313 - REV AAir conditioning system charging procedures change R134a
- SL316 - REV AReplacement of Forward Evaporator Blower Wheel & Motor Assy.
- SL323Replacement of Hi-Output Blower Motor Support Bracket
- SL330Forward Evaporator Air Outlet Louver Up-grade & Replacement Procedure
- SL329 - REV BCondenser Scoop Bellcrank Replacement & Adjustment Procedure
- SL348Condenser Scoop Actuator Replacement Procedure
- SL312Air conditioning system Condenser Blower Motor Assembly change
- SL314 - REV AAir conditioning system. Temperature Control electrical circuit change
- SL343Modification to Bell 407 Air Conditioner Belt Tensioning Collar in conjunction with Bell Helicopter Technical Bulletin No. 407-0
- SL349Inspection of the Bell 407 Air Conditioner Driveshaft Mounted Pulley and Drive Ring assembly
- SL328 - REV ARepair or Replacement of ES26185-1 (4712-7) Firewall shutoff valve
Bell 412
Air Conditioning
- SL313 - REV AAir conditioning system charging procedures change R134a
- SL328 - REV ARepair or Replacement of ES26185-1 (4712-7) Firewall shutoff valve
- SL307Air conditioning system compressor change
- SL315Air conditioning system Compressor Inspection Procedures
- SL318
- SL319Relocation of Air Conditioning System Charging/Service Parts
- SL320Removal and Replacement of Air Conditioning System Compressor
- SL324Replacement of AFT Evaporator Blower Wheel & Motor Assy.
- SL326Inspection of 412AC-5040-3 Accumulator, when installed with Aeronautical Accessories Hoist Kit (P/N 412-150-400)
- SL333Main Transmission Breather Vent Cap Relocation
Bell 427
Air Conditioning
- SL348Condenser Scoop Actuator Replacement Procedure
- SL335 - REV ABell 427 Air Conditioner Compressor Drive Belt Replacement
- SL346Bell 427 Air Conditioner Alternate Compressor Belt
- SL342Change of Heater Bleed Air Shutoff Valve Orientation
Eurocopter EC130
Eurocopter EC135
MD900
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