ENSTROM 480B RFM SUPPLEMENT
INTRO-1
Rev. 1
Report No. 28-AC-049
Nov 12/14
INTRODUCTION
Intro-1. General
This supplement contains the operating instructions,
procedures, and limitations for the Sandel SN3500
Electronic Horizontal Situation Indicator (EHSI) configured
with the Sandel SG102 Attitude Heading Reference
System (AHRS), the Sandel MT102 Magnetic Transducer
Accessory (MTA), and navigation receivers.
The Sandel SN3500 configurations applicable to this
supplement are part numbers 4220609-1, 4220609-5,
and 4220609-7. Differences in system installation or
operation between the configurations are noted where
applicable.
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 SN3500 EHSI is installed.
In this document, the term
SN3500
may be used
interchangeably in reference to the complete EHSI system
or in reference to the panel mounted EHSI unit.
For additional information regarding the supplement
format and text emphasis or definitions, refer to the Basic
Flight Manual.
Abbreviations noted in this supplement are listed in Table
Intro-1.
Table Intro-1. List of Abbreviations
ACK
Acknowledge
AHRS
Attitude Heading Reference System
CDI
Course Deviation Indicator
CRC
Cyclic Redundancy Check
DG
Directional Gyro
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Supplement Publications Status link under the Technical Support Page of the Enstrom Helicopter website for the current revision
level of this Rotorcraft Flight Manual Supplement.
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