SB number : Cover Service Bulletin (EC135-34-039/01)
Applicable to version(s) : According to Service Bulletin
Flight and Navigation Management System.
Airbus Helicopters Deutschland proposes the retrofit of the dual GARMIN GTN750. It combines a VHF-AM communication transceiver, a navigation VOR/LOC/GS function, a GPS receiver and an ATC transponder control. The brilliant color map graphics display provides a touchscreen surface as main user interface. The VHF AM/COM offers a choice of 25 kHz or 8.33 kHz spacing and 10W/16W VHF COM output power in conjunction with FCDS (Meghas) architectures.
FCDS equipped aircraft additionally receive a transponder GTX 33ES.
Architectures with conventional cockpit need to be assessed case by case.
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  • Large touchscreen display (display size 6.9 inch diagonal: 600 x 708 pixels)
  • Front loading SD card for easy database updates


Compliance is optional. All EC135/635 FCDS with a type certificated avionic package installed by Airbus Helicopters Deutschland (AHD). Whether the retrofit can be accomplished or not depends on the helicopter's configuration and will be determined by means of the reply form sheet. SBAS capability is not available for - SMD68 (currently) - Conventional cockpit architecture - A/C without DAFCS installed SMD45 units have to be SBAS compatible and to be checked via the customer. If there is not enough space for the installation of the dual GTN750, a bigger center console is needed. Airbus Helicopters Deutschland offers a XL or XXL center console with SB EC135-31-068.

Airframe, Systems On Request
Avionic On Request
Avionic, Electrical On Request

ADDITIONAL INFORMATION : Optional: - Satellite Based Augmentation System (SBAS) for SMD45 architecture only, SBAS capability - Automatic Dependent Surveillance – Broadcast output (ADS-B out), available after certification,ADS-B out capability - Helicopter Terrain Awareness and Warning System (HTAWS),HTWAS capability - Satellite communication unit GSR56H, available after certification,Satellite communication module

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