Sandel SN3500 User Manual

Rev. 1
Nov 12/14
ENSTROM 480B OPERATOR’S MANUAL
AND
FAA APPROVED
ROTORCRAFT FLIGHT MANUAL
SUPPLEMENT
SANDEL® SN3500 EHSI
* * * * *
REPORT NO. 28-AC-049
HELICOPTER SERIAL NO.
HELICOPTER REGISTRATION NO.
* * * * *
THIS SUPPLEMENT MUST BE CARRIED IN THE
HELICOPTER AT ALL TIMES IF EQUIPPED WITH THE
SN3500 EHSI INSTALLATION. CHAPTERS 1, 2, 3, AND
4 ARE FAA APPROVED.
FAA APPROVED BY:
CHARLES L. SMALLEY, MANAGER
CHICAGO AIRCRAFT CERTIFICATION OFFICE
CENTRAL REGION
FEDERAL AVIATION ADMINISTRATION
FAA APPROVAL DATE: MAY 31, 2012
NOTE
This document contains technical data, export of which is restricted by
ITAR. Disclosure to foreign persons without prior U.S. Government
approval is prohibited. Violations of these export laws and regulations
are subject to severe civil and criminal penalties.
PROPRIETARY
The information contained herein is proprietary to The Enstrom
Helicopter Corporation and shall not be reproduced or disclosed in whole
or in part for any PURPOSE except when such user possesses direct,
written authorization from Enstrom Helicopter Corporation
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 this Rotorcraft Flight Manual Supplement.
UNCONTROLLED COPY WHEN DOWNLOADED OR PRINTED

Sandel SN3500 Specifications

General

Brand	Sandel
Model	SN3500
Category	Monitor
Language	English

Summary

Operating Limitations

Specific Operational Limits for SN3500

Details restrictions like VFR-only operation and required supporting publications for the SN3500.

Normal Procedures

SN3500 Engine Starting Procedure

Outlines the steps for powering up the SN3500 and verifying its introduction screen and compass card.

SN3500 Engine Runup Checks

Emergency Procedures

SN3500 Electrical System Failure Handling

SN3500 Attitude Indicator Failure Response

Explains how to use the SN3500's Reversionary Mode for attitude information when the primary indicator fails.

System Description and Operation

SN3500 EHSI System Overview

SN3500 System Power-Up Sequence

SN3500 Navigation Source Selection

Details how to cycle through and annunciate primary NAV sources like VOR and ILS.

SN3500 Bearing Pointer and Heading Bug Control

Describes how to select bearing pointers and control the heading bug position on the SN3500 display.

SN3500 Reversionary Mode Activation

Explains how to activate and use the Reversionary Mode for backup attitude information via the ATTD IND switch.

SN3500 Flags and Abnormal Conditions

SN3500 Error Message Handling