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Sandel SN3500 Operator's Manual

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UNCONTROLLED COPY WHEN DOWNLOADED OR PRINTED
ENSTROM 480B OPERATOR'S MANUAL
HELICOPTER SERIAL NO.
HELICOPTER REGISTRATION NO.
THIS
HELICOPTER AT ALL TIMES IF EQUIPPED WITH THE
SN3500 EHSI INSTALLATION. CHAPTERS 1, 2, 3, AND
4 ARE FAA APPROVED.
FAA APPROVED BY:
FAA APPROVAL DATE: MAY 31, 2012
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.
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
FAA APPROVED
ROTORCRAFT FLIGHT MANUAL
SUPPLEMENT
SANDEL® SN3500 EHSI
REPORT NO. 28-AC-049
SUPPLEMENT
CHARLES L. SMALLEY, MANAGER
CHICAGO AIRCRAFT CERTIFICATION OFFICE
CENTRAL REGION
FEDERAL AVIATION ADMINISTRATION
level of this Rotorcraft Flight Manual Supplement.
AND
* * * * *
* * * * *
MUST BE
CARRIED
NOTE
PROPRIETARY
IN THE
Rev. 1
Nov 12/14

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  • Page 1 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...
  • Page 2 UNCONTROLLED COPY WHEN DOWNLOADED OR PRINTED INTENTIONALLY LEFT BLANK 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.

  • Page 3: Log Of Revisions

    UNCONTROLLED COPY WHEN DOWNLOADED OR PRINTED ENSTROM 480B RFM SUPPLEMENT LOG OF REVISIONS Rev. Date FAA Approved APPROVED FOR THE MANAGER CHICAGO AIRCRAFT CERTIFICATION OFFICE CENTRAL REGION FEDERAL AVIATION ADMINISTRATION Rev. 1 Report No. 28-AC-049 Nov 12/14 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.
  • Page 4 UNCONTROLLED COPY WHEN DOWNLOADED OR PRINTED ENSTROM 480B RFM SUPPLEMENT INTENTIONALLY LEFT BLANK Report No. 28-AC-049 May 8/12 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.

  • Page 5: Table Of Contents

    UNCONTROLLED COPY WHEN DOWNLOADED OR PRINTED ENSTROM 480B RFM SUPPLEMENT 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 ...........
  • Page 6 LIST OF FIGURES FIGURE DESCRIPTION PAGE SN3500 System Block Diagram ....7-1 SN3500 Controls & Display Area (VOR) .. 7-2 SN3500 Display Area (ILS) ..... 7-3 SN3500 Reversionary Mode Display ..........7-4 Instrument Panel Layout – P/N 4220609-1 ......... 7-10 Instrument Panel Layout –...

  • Page 7: List Of Effective Pages

    UNCONTROLLED COPY WHEN DOWNLOADED OR PRINTED ENSTROM 480B RFM SUPPLEMENT LIST OF EFFECTIVE PAGES PAGE DATE PAGE DATE Cover Nov 12/14 Nov 12/14 May 8/12 May 8/12 Nov 12/14 Nov 12/14 May 8/12 INTRO-1 Nov 12/14 INTRO-2 Nov 12/14 Nov 12/14 Nov 12/14 Nov 12/14 May 8/12...
  • Page 8 UNCONTROLLED COPY WHEN DOWNLOADED OR PRINTED ENSTROM 480B RFM SUPPLEMENT INTENTIONALLY LEFT BLANK Report No. 28-AC-049 May 8/12 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.

  • Page 9: Introduction

    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.
  • Page 10 UNCONTROLLED COPY WHEN DOWNLOADED OR PRINTED INTRO-2 ENSTROM 480B RFM SUPPLEMENT Distance Measuring Equipment EHSI Electronic Horizontal Situation Indicator Federal Aviation Administration Global Positioning System Glide Slope Horizontal Situation Indicator Instrument Flight Rules Inch Instrument Landing System ITAR International Traffic in Arms Regulations Pounds Liquid Crystal Display Light Emitting Diode...

  • Page 11: Operating Limitations

    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...

  • Page 12: Approved Software Versions

    4220609-7 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. FAA Approved: Dec 3/14 Rev. 1 Report No. 28-AC-049 Nov 12/14 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.

  • Page 13: Normal Procedures

    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.
  • Page 14 UNCONTROLLED COPY WHEN DOWNLOADED OR PRINTED ENSTROM 480B RFM SUPPLEMENT INTENTIONALLY LEFT BLANK FAA Approved: May 31/12 Report No. 28-AC-049 May 8/12 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.

  • Page 15: Emergency Procedures

    ENSTROM 480B RFM SUPPLEMENT 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.
  • Page 16 UNCONTROLLED COPY WHEN DOWNLOADED OR PRINTED ENSTROM 480B RFM SUPPLEMENT 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.

  • Page 17: Performance Data

    UNCONTROLLED COPY WHEN DOWNLOADED OR PRINTED ENSTROM 480B RFM SUPPLEMENT CHAPTER 4. PERFORMANCE DATA 4-1. General Refer to the basic RFM. FAA Approved: May 31/12 Report No. 28-AC-049 May 8/12 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.
  • Page 18 UNCONTROLLED COPY WHEN DOWNLOADED OR PRINTED ENSTROM 480B RFM SUPPLEMENT INTENTIONALLY LEFT BLANK FAA Approved: May 31/12 Report No. 28-AC-049 May 8/12 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.

  • Page 19: Weight/Balance And Loading

    ENSTROM 480B RFM SUPPLEMENT 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.
  • Page 20 UNCONTROLLED COPY WHEN DOWNLOADED OR PRINTED ENSTROM 480B RFM SUPPLEMENT INTENTIONALLY LEFT BLANK Report No. 28-AC-049 May 8/12 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.

  • Page 21: System Description And Operation

    UNCONTROLLED COPY WHEN DOWNLOADED OR PRINTED ENSTROM 480B RFM SUPPLEMENT CHAPTER 7. SYSTEM DESCRIPTION AND OPERATION 7-1. System Description 1. The Sandel SN3500 is an enhanced electronic horizontal situation indicator (EHSI) that displays compass and RMI data on a bright, high-contrast, LED backlit, LCD screen.
  • Page 22 (noted in bold font) and display features are shown in Figure 7-2 and Figure 7-3. a. The display in Figure 7-2 shows that the SN3500 is tuned to VOR signals whereas the display in Figure 7-3 shows the SN3500 is tuned to an ILS signal.
  • Page 23 VUE control is switched from full view to arc view and when operating in Reversionary Mode (if equipped). Refer to the SN3500 Pilot’s Guide for details. c. The upper display area presents data from the...

  • Page 24: Sn3500 Reversionary Mode

    MEM function as well as other display functions and features of the SN3500. 5. With the exception of P/N 4220609-7, the SN3500 is configured with Reversionary Attitude Mode (Reversionary Mode) capability, a feature that provides backup attitude in the event of loss of the primary attitude display.

  • Page 25: Sample Indicator Symbols And Color

    UNCONTROLLED COPY WHEN DOWNLOADED OR PRINTED ENSTROM 480B RFM SUPPLEMENT 6. Power to the SN3500 system is provided via the avionics master switch (AVI MSTR). Power to the SN3500 is provided via the EHSI circuit breaker (5 Amp). Power to the SG102 and MT102 is provided via the AHRS circuit breaker (5 Amp) located on the left side of the lower panel.

  • Page 26: Basic Operation

    ENSTROM 480B RFM SUPPLEMENT 7-2. Basic Operation The following content covers basic operational procedures. Refer to the applicable SN3500 pilot’s guide (para. 1-2) for additional detail regarding the SN3500 operation. 7-3. Power-Up The SN3500 system is powered on when the avionics master switch (AVI MSTR) is turned ON after engine start.

  • Page 27: Reversionary Mode

    UNCONTROLLED COPY WHEN DOWNLOADED OR PRINTED ENSTROM 480B RFM SUPPLEMENT 2. To select the NAV source for the bearing pointer: a. Press M to activate menu mode. b. Press BRG to display the BRG menu. c. Rotate the left knob to select BRG1 or BRG2. d.

  • Page 28: Compass Rose View

    UNCONTROLLED COPY WHEN DOWNLOADED OR PRINTED ENSTROM 480B RFM SUPPLEMENT 7-7. Compass Rose View 1. Press VUE to switch between the 360-degree full view and 70-degree arc views. 7-8. Display Brightness To increase the display brightness, press and hold the CLR button to steadily increase the display brightness.

  • Page 29: Error Messages

    UNCONTROLLED COPY WHEN DOWNLOADED OR PRINTED ENSTROM 480B RFM SUPPLEMENT 2. Refer to the SN3500 Pilot’s Guide for additional information regarding flags and abnormal condition displays. 7-10. Error Messages Error messages, which are considered critical, annunciated on-screen permanently until acknowledged.

  • Page 30: Instrument Panel Layout - P/N 4220609-1

    UNCONTROLLED COPY WHEN DOWNLOADED OR PRINTED 7-10 ENSTROM 480B RFM SUPPLEMENT SN3500 ATTD IND Switch Figure 7-5. Instrument Panel Layout – P/N 4220609-1 Rev. 1 Report No. 28-AC-049 Nov 12/14 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.

  • Page 31: Instrument Panel Layout - P/N 4220609-5

    UNCONTROLLED COPY WHEN DOWNLOADED OR PRINTED ENSTROM 480B RFM SUPPLEMENT 7-11 ATTD IND Switch SN3500 Figure 7-6. Instrument Panel Layout – P/N 4220609-5 Rev. 1 Report No. 28-AC-049 Nov 12/14 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.

  • Page 32: Instrument Panel Layout - P/N 4220609-7

    UNCONTROLLED COPY WHEN DOWNLOADED OR PRINTED 7-12 ENSTROM 480B RFM SUPPLEMENT SN3500 Figure 7-7. Instrument Panel Layout – P/N 4220609-7 Rev. 1 Report No. 28-AC-049 Nov 12/14 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.

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