Sandel sn3500 ehsi 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
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ENSTROM 480B RFM SUPPLEMENT i
Rev. 1
Report No. 28-AC-049 Nov 12/14
LOG OF REVISIONS
Rev.
No.
Date FAA Approved
1
APPROVED FOR THE MANAGER
CHICAGO AIRCRAFT CERTIFICATION OFFICE
CENTRAL REGION
FEDERAL AVIATION ADMINISTRATION
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ii ENSTROM 480B RFM SUPPLEMENT
Report No. 28-AC-049 May 8/12
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ENSTROM 480B RFM SUPPLEMENT iii
Report No. 28-AC-049 May 8/12
ROTORCRAFT FLIGHT MANUAL SUPPLEMENT
SN3500 EHSI
TABLE OF CONTENTS
CHAPTER DESCRIPTION PAGE
Supplement Cover Page
Log of Revisions ........................................ i
Table of Contents .....................................iii
List of Figures .......................................... iv
List of Tables ........................................... iv
List of Effective Pages ...............................v
INTRODUCTION ........................... INTRO-1
CHAPTER 1 OPERATING LIMITATIONS
General................................................. 1-1
Operational Limits ................................ 1-1
CHAPTER 2 NORMAL PROCEDURES
Starting Engine..................................... 2-1
Engine Runup ...................................... 2-1
CHAPTER 3 EMERGENCY PROCEDURES
General................................................. 3-1
Electrical System Failure....................... 3-1
CHAPTER 4 PERFORMANCE DATA
General................................................. 4-1
CHAPTER 5 RESERVED
CHAPTER 6 WEIGHT/BALANCE AND LOADING
General................................................. 6-1
CHAPTER 7 SYSTEM DESCRIPTION AND OPERATION
System Description ............................... 7-1
Basic Operation .................................... 7-6
Power-Up.............................................. 7-6
Nav Source Selection............................. 7-6
Bearing Pointer Selection and
Heading Bug Control............................. 7-6
Reversionary Mode................................ 7-7
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iv ENSTROM 480B RFM SUPPLEMENT
Rev. 1
Report No. 28-AC-049 Nov 12/14
ROTORCRAFT FLIGHT MANUAL SUPPLEMENT
SN3500 EHSI
TABLE OF CONTENTS
CHAPTER DESCRIPTION PAGE
CHAPTER 7 SYSTEM DESCRIPTION AND OPERATION
Compass Rose View ...............................7-8
Display Brightness ................................7-8
Flags and Abnormal Conditions .............7-8
Error Messages......................................7-9
Inactive Functions .................................7-9
LIST OF FIGURES
FIGURE DESCRIPTION PAGE
7-1 SN3500 System Block Diagram..............7-1
7-2 SN3500 Controls & Display Area (VOR) ..7-2
7-3 SN3500 Display Area (ILS) .....................7-3
7-4 SN3500 Reversionary Mode
Display..................................................7-4
7-5 Instrument Panel Layout
– P/N 4220609-1.................................7-10
7-6 Instrument Panel Layout
– P/N 4220609-5 .................................7-11
7-7 Instrument Panel Layout
– P/N 4220609-7.................................7-12
LIST OF TABLES
TABLE DESCRIPTION PAGE
Intro-1 List of Abbreviations ......................INTRO-1
1-1 Approved Software Versions...................1-2
6-1 Weight and Balance Information ............6-1
7-1 Sample Indicator Symbols and Color
Descriptions ..........................................7-5
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ENSTROM 480B RFM SUPPLEMENT v
LIST OF EFFECTIVE PAGES
Rev. 1
Report No. 28-AC-049 Nov 12/14
PAGE DATE
Cover Nov 12/14
i Nov 12/14
ii May 8/12
iii May 8/12
iv Nov 12/14
v Nov 12/14
vi May 8/12
INTRO-1 Nov 12/14
INTRO-2 Nov 12/14
1-1 Nov 12/14
1-2 Nov 12/14
2-1 Nov 12/14
2-2 May 8/12
3-1 Nov 12/14
3-2 Nov 12/14
4-1 May 8/12
4-2 May 8/12
6-1 May 8/12
6-2 May 8/12
7-1 Nov 12/14
7-2 Nov 12/14
7-3 Nov 12/14
7-4 Nov 12/14
7-5 Nov 12/14
7-6 Nov 12/14
7-7 Nov 12/14
7-8 May 8/12
7-9 Nov 12/14
7-10 Nov 12/14
7-11 Nov 12/14
7-12 Nov 12/14
PAGE DATE
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vi ENSTROM 480B RFM SUPPLEMENT
Report No. 28-AC-049 May 8/12
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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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INTRO-2 ENSTROM 480B RFM SUPPLEMENT
Rev. 1
Report No. 28-AC-049 Nov 12/14
DME Distance Measuring Equipment
EHSI Electronic Horizontal Situation Indicator
FAA Federal Aviation Administration
GPS Global Positioning System
GS Glide Slope
HSI Horizontal Situation Indicator
IFR Instrument Flight Rules
IN Inch
ILS Instrument Landing System
ITAR International Traffic in Arms Regulations
LBS Pounds
LCD Liquid Crystal Display
LED Light Emitting Diode
LOC Localizer
MTA Magnetic Transducer Accessory
NAV Navigation Receiver (VOR/LOC/GS)
NDB Non-Directional Beacon
RFM Rotorcraft Flight Manual
RFMS Rotorcraft Flight Manual Supplement
RMI Radio Magnetic Indicator
TFC Traffic
USB Universal Serial Bus
VDI Vertical Deviation Indicator
VHF Very High Frequency
VMC Visual Meteorological Conditions
VOR VHF Omnidirectional Range
VORTAC VHF Omnidirectional Range/Tactical Aircraft
Control
WX Weather
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ENSTROM 480B RFM SUPPLEMENT 1-1
FAA Approved: Dec 3/14 Rev. 1
Report No. 28-AC-049 Nov 12/14
CHAPTER 1. OPERATING LIMITATIONS
1-1. General
This chapter includes operating limitations and
restrictions that must be observed during ground and
flight operations.
The operating limitations set forth in this chapter are the
direct results of design analysis and flight tests.
Compliance with these limitations will allow the pilot to
derive maximum utility from the helicopter.
1-2. Operational Limits
1. Rotorcraft operation with the SN3500 is limited to
VFR only. IFR procedure training is allowed during
VFR/VMC.
2. The following publications should be referred to for
operating instructions and must be kept accessible to the
flight crew at all times:
a. Pilot’s Guide, SN3500 Primary Navigation Display
with Reversionary Attitude Mode, Document Number
82005-PG, Revision L or later revision.
b. Pilot’s Guide Supplement, SN3500 Primary
Navigation Display, Document Number 82005-
PGSUP, Revision E or later revision.
3. The SN3500 must utilize the approved software
version listed in Table 1-1.
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1-2 ENSTROM 480B RFM SUPPLEMENT
FAA Approved: Dec 3/14 Rev. 1
Report No. 28-AC-049 Nov 12/14
4. The SG102 must utilize the approved software
version listed in Table 1-1.
Table 1-1. Approved Software Versions
Configuration Component
Approved Software
Version
(or later FAA approved
version)
4220609-1 EHSI 4.05
AHRS 1.31
4220609-5
4220609-7
EHSI A4.07
AHRS 1.61
5. The “CRC Self Test Failed” message must not appear
on power-up if flight operations are predicated on the use
of the SN3500.
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ENSTROM 480B RFM SUPPLEMENT 2-1
FAA Approved: Dec 3/14 Rev. 1
Report No. 28-AC-049 Nov 12/14
CHAPTER 2. NORMAL PROCEDURES
2-1. Starting Engine
Add the following steps to para. 2-19, “Starting Engine”,
after switching the avionics master switch ON:
1. The SN3500 will perform a power-on self-test and
display an introduction screen.
a. Verify the software version as listed in Table 1-1.
b. Verify the compass card display appears a few
seconds after the introduction screen.
2. Keep aircraft stationary during the AHRS
initialization period.
CAUTION
The aircraft should be stationary during the
AHRS initialization period. The initialization
may take up to three minutes after power is
applied.
2-2. Engine Runup
Add the following Check to step 11 of para. 2-20, “Engine
Runup”:
1. Check the gyro flag (GYRO INVALID) is removed
from the SN3500 heading display and the compass rose is
white after the initialization period.
2. Check the reversionary mode capability (if equipped)
by activating the ATTD IND switch. Ensure the display
information compares identically with the primary attitude
indicator. Press the ATTD IND switch again to return to
HSI mode.
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2-2 ENSTROM 480B RFM SUPPLEMENT
FAA Approved: May 31/12
Report No. 28-AC-049 May 8/12
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ENSTROM 480B RFM SUPPLEMENT 3-1
FAA Approved: Dec 3/14 Rev. 1
Report No. 28-AC-049 Nov 12/14
CHAPTER 3. EMERGENCY PROCEDURES
3-1. General
1. If the SN3500 fails to operate or the display
indicates that the heading is invalid, use an alternate
heading source for primary heading information.
2. If the AHRS is inoperative or detects an internal
error, all SN3500 display outputs will be flagged. Use an
alternate heading source for primary heading information.
3-2. Electrical System Failure
1. A power interruption exceeding 30 seconds may
cause a loss of AHRS initialization. If a power interruption
occurs and the gyro flag appears, use an alternate heading
source for primary heading information.
2. In the event of complete electrical system failure,
use an alternate heading source for primary heading
information.
3-3. Primary Attitude Indicator Failure
CAUTION
If there is no ATTD IND switch located on the
instrument panel, the reversionary mode is
not enabled. Refer to external visual
references and other available information
for attitude information in the event the
attitude indicator fails to operate.
1. In the event the attitude indicator fails to operate,
revert to the SN3500 EHSI, Reversionary Mode, for
alternate attitude information.
a. Press the ATTD IND switch on the instrument panel
to activate the Reversionary Mode for attitude
display on the SN3500.
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3-2 ENSTROM 480B RFM SUPPLEMENT
FAA Approved: Dec 3/14 Rev. 1
Report No. 28-AC-049 Nov 12/14
NOTE
The attitude data source in Reversionary
Mode is received from the same AHRS which
supplies the HSI heading. During normal
flight, if the HSI heading is intermittent,
erroneous, or flagged, it may indicate that
Reversionary Mode may be unavailable.
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ENSTROM 480B RFM SUPPLEMENT 4-1
FAA Approved: May 31/12
Report No. 28-AC-049 May 8/12
CHAPTER 4. PERFORMANCE DATA
4-1. General
Refer to the basic RFM.
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FAA Approved: May 31/12
Report No. 28-AC-049 May 8/12
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ENSTROM 480B RFM SUPPLEMENT 6-1
Report No. 28-AC-049 May 8/12
CHAPTER 6. WEIGHT/BALANCE AND LOADING
6-1. General
If any component of the SN3500 EHSI configuration is
removed, a new weight and balance should be recalculated
per the instructions in Chapter 6 of the basic RFM using
the information provided in Table 6-1.
Table 6-1. Weight and Balance Information
Equipment Weight
(lbs)
Arm
(in)
Moment
(in-lbs)
SN3500 EHSI 3.0 68.2 204.6
SG102 AHRS 2.2 189.7 417.3
SG102 Mounting Base 0.6 189.7 113.8
MT102 MTA 0.4 241.0 96.4
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