ENSTROM F-28F/280FX RFM SUPPLEMENT INTRO-1
FAA Approved: Mar 28/19
Report No. 28-AC-081
Jan 15/19
GTX 345 TRANSPONDER
INTRODUCTION
Intro-1. General
This supplement contains the operating instructions,
procedures, and limitations for the Garmin GTX 345
Transponder with Automatic Dependent Surveillance-
Broadcast (ADS-B) functionality.
The supplement is divided into two basic parts, the FAA
approved RFM Supplement and Supplemental Data
provided by the Enstrom Helicopter Corporation (Enstrom).
Chapters 1, 2, 3, and 4 make up the FAA approved RFM
Supplement. It is required by Federal Regulations that this
supplement be carried in the helicopter at all times if the
Garmin GTX 345 is installed.
Intro-2. List of Abbreviations
Abbreviations noted in this supplement are listed in Intro-1.
Intro-1. List of Abbreviations
ADS-B
Automatic Dependent Surveillance - Broadcast
ADS-R Automatic
Dependent
Surveillance - Rebroadcast
ATC
Air Traffic Control
CFR
Code of Federal Regulations
ES Extended
Squitter
FAA
Federal Aviation Administration
FIS-B
Flight Information Service - Broadcast
GPS Global
Positioning
System
ICS Intercom
System
MHz Megahertz
PABI
Pressure Altitude Broadcast Inhibit
PED
Portable Electronic Device
RFM
Rotorcraft Flight Manual
SBAS Satellite-Based
Augmentation
System
SW Software
TAS Traffic
This electronic document is not linked to a subscription for revision control or distribution. Refer to the Optional
Equipment Supplement Publications Status link under the Technical Support Page of the Enstrom Helicopter website
for the current revision level of the Rotorcraft Flight Manual Supplement.
UNCONTROLLED COPY WHEN DOWNOADED OR PRINTED
