"Air Comm strives ceaselessly to design and produce products that
provide optimal comfort, safety, reliability and value for our customers." - Keith Steiner

Service Bulletins

May be mandatory or at the discretion of the operator. Service bulletins contain information regarding upgrades and improvements.

AgustaWestland AW109 Heater
AgustaWestland AW119 Air Conditioning
  • SB A119-306-REV D
    Removal and Replacement of A119 Air Conditioner Compressor Drive Belt Design Change
  • SB A119-502_RevNC
    Replacement of Binary Switch ES57010-1 with ES57178-1
  • SB A119-604_RevNC
    Replacement of Forward Evaporator Assembly A119-6002, with the new S-6118EC-1
  • SB A119-620_RevNC
    Inspection of the Aft Evaporator mounting brackets, and the addition of spacers between the Evaporator Assembly and the Upper Deck area
  • SB A119-622_RevNC
    Aft Evaporator Drain Improvements
  • SB A119-3010_RevNC
    Removal and Replacement of A119 Air Conditioner Compressor Temperature Sensor
  • SB A119-3024 REV E
    Installation of A119 Air Conditioner Oil Cooler Inlet Screen Assembly, Engine Governor Control Cable Guard and Compressor Drive Belt
  • SB A119-7002_RevNC
    Removal and Replacement of A119 Air Conditioner Condenser Scoop Bellcrank / Up-grade
  • SB A119-8422_RevNC
    Removal and Replacement of A119 Air Conditioner Timer Logic Modification
  • SB A119-682-1 REV NC
    SB A119-682-1; A119 Air Conditioner Cabin Air Conditioner Outlet Assembly Change
  • SB A119-111014_RevA
    Agusta A119 Air Conditioner Aft Evaporator Blower Motor Connector
  • SB A119-7004_RevA
    Agusta A119 Air Conditioner Condenser Blower Motor Connector
  • SB A119-3502 Rev A
    Agusta A119 Engine Governor Control Cable Guard
  • SB A119-3054 Rev B
    Agusta A119 Air Conditioner Compressor Belt Guard Improvements
  • SB A119-208_RevNC
    Air conditioner performance up-grades and improvements
  • SB A119-302_RevNC
    Supplemental inspection requirements for the A119 Compressor Mount
  • SB A119-303-REV A
    Supplemental one-time inspection and modification requirements for the A119 Compressor Mount Installation
Air Conditioning
Airbus AS350 Air Conditioning
Airbus EC120 Air Conditioning
Airbus EC130 Air Conditioning
Airbus EC135 Air Conditioning
Airbus EC145 Air Conditioning
Bell 206 (Keith Products/Meggitt Addison) Air Conditioning
Bell 206 Air Conditioning
Bell 222 Air Conditioning
Bell 407 Air Conditioning
Bell 412 Air Conditioning
Bell 427 Air Conditioning
Bell 429 Air Conditioning
  • SB 429-201-1 Rev NC
    Service Bulletin for condenser fan motor
  • SB 429-204_Rev_N/C
    Bell 429 Conversion of the 429EC-200-3, -5, or -6 Dual Evaporator System equipped with Allied motors to the 429EC-202-3, or -4 Single Evaporator System equipped with Allied motors
  • SB_429-622_Rev_F
    Improved 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_A
    Conversion 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_A
    Conversion of the Bell 429EC Air Conditioner Electrical Provisions to accommodate the Allied Blower Motors.
  • SB 429-205 Rev C
    Bell 429 Condenser Fan Motor Mount Fastener Inspection and Alternate Means of Compliance
  • SB 429-200-5_Rev_N/C
    Conversion of 429EC-202-1/-3 Single Evaporator System to 429EC-200-5 Dual Evaporator System.
Bell 429 Heating System
  • SB 429-928_Rev_NC
    Bell Helicopter Model 429 Windshield Defroster Product Improvement
Cessna 206H & T206H Air Conditioning
Cessna 402B, 402C Air Conditioning
Cessna 404 Air Conditioning
Cessna 414 / 421 Air Conditioning
  • SB124-1A_RevB
    Conversion to R134a 402B, 414, 414A, 421B, & 421C (York Compressor)
  • SB124-1_RevD
    Conversion to R134a 402B, 414, 414A, 421B, & 421C
Learjet 31, 31A, 35, 35A, 36, 36A, 45, 60 and 70/75 Air Conditioning
  • SB174_RevNC
    Belt Guard Replacement Installation Assembly Modification
Learjet 55 Air Conditioning
  • SB155_RevA
    Maintenance Access panel Installation
  • SB174_RevNC
    Belt Guard Replacement Installation Assembly Modification