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ENSTROM TH-28 Series Maintenance Manual

Partial wide instrument panel
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ENSTROM TH-28/480 SERIES MAINTENANCE MANUAL
SUPPLEMENT 6
PARTIAL WIDE INSTRUMENT PANEL
The Airworthiness Limitations section is FAA approved and
specifies maintenance required under 14 CFR §§ 43.16 and 91.403
unless an alternative program has been FAA approved.
Copyright 2010 by
The Enstrom Helicopter Corporation
nd
2209 22
Street
Menominee, Michigan 49858-3595
Telephone: 906-863-1200
Fax: 906-863-6821
UNCONTROLLED COPY WHEN DOWNLOADED OR PRINTED
i
Nov 15/10
Visit www.enstromhelicopter.com for instructions to order an original manual and to register for email notification of updates.

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Summary of Contents for ENSTROM TH-28 Series

  • Page 1 ENSTROM TH-28/480 SERIES MAINTENANCE MANUAL SUPPLEMENT 6 PARTIAL WIDE INSTRUMENT PANEL The Airworthiness Limitations section is FAA approved and specifies maintenance required under 14 CFR §§ 43.16 and 91.403 unless an alternative program has been FAA approved. Copyright 2010 by...
  • Page 2 ENSTROM TH-28/480 SERIES MAINTENANCE MANUAL SUPPLEMENT 6 INTENTIONALLY LEFT BLANK UNCONTROLLED COPY WHEN DOWNLOADED OR PRINTED Nov 15/10 Visit www.enstromhelicopter.com for instructions to order an original manual and to register for email notification of updates.

  • Page 3: Recommended Change Report

    TH-28, 480, and 480B helicopters. This manual is periodically revised. If, in the opinion of the user, any information has been omitted or requires clarification, please direct your comments to Enstrom via this form (duplicate) or other similar form. Send the recommended changes to:...
  • Page 4 ENSTROM TH-28/480 SERIES MAINTENANCE MANUAL SUPPLEMENT 6 INTENTIONALLY LEFT BLANK UNCONTROLLED COPY WHEN DOWNLOADED OR PRINTED Nov 15/10 Visit www.enstromhelicopter.com for instructions to order an original manual and to register for email notification of updates.

  • Page 5: Record Of Revisions

    ENSTROM TH-28/480 SERIES MAINTENANCE MANUAL SUPPLEMENT 6 RECORD OF REVISIONS ISSUE DATE REV NO. ISSUE DATE DATE INSERTED DATE INSERTED UNCONTROLLED COPY WHEN DOWNLOADED OR PRINTED Nov 15/10 Visit www.enstromhelicopter.com for instructions to order an original manual and to register for email notification of updates.
  • Page 6 ENSTROM TH-28/480 SERIES MAINTENANCE MANUAL SUPPLEMENT 6 INTENTIONALLY LEFT BLANK UNCONTROLLED COPY WHEN DOWNLOADED OR PRINTED Nov 15/10 Visit www.enstromhelicopter.com for instructions to order an original manual and to register for email notification of updates.

  • Page 7: Table Of Contents

    ENSTROM TH-28/480 SERIES MAINTENANCE MANUAL SUPPLEMENT 6 TABLE OF CONTENTS Chapter Description Page Cover Page ..................i Recommended Change Report ............iii Record of Revisions ................v Table of Contents ................vii Effective Page List ................ix Section 1 Introduction 1-1.
  • Page 8 ENSTROM TH-28/480 SERIES MAINTENANCE MANUAL SUPPLEMENT 6 INTENTIONALLY LEFT BLANK UNCONTROLLED COPY WHEN DOWNLOADED OR PRINTED viii Nov 15/10 Visit www.enstromhelicopter.com for instructions to order an original manual and to register for email notification of updates.
  • Page 9 ENSTROM TH-28/480 SERIES MAINTENANCE MANUAL SUPPLEMENT 6 EFFECTIVE PAGE LIST Page Date Page Date Nov 15/10 Nov 15/10 Nov 15/10 Nov 15/10 Nov 15/10 Nov 15/10 Nov 15/10 viii Nov 15/10 Nov 15/10 Nov 15/10 Nov 15/10 Nov 15/10 Nov 15/10...
  • Page 10 ENSTROM TH-28/480 SERIES MAINTENANCE MANUAL SUPPLEMENT 6 INTENTIONALLY LEFT BLANK UNCONTROLLED COPY WHEN DOWNLOADED OR PRINTED Nov 15/10 Visit www.enstromhelicopter.com for instructions to order an original manual and to register for email notification of updates.

  • Page 11: Introduction

    INTRODUCTION 1-1. Aircraft Effectivity A. The data presented in this TH-28/480 Series Maintenance Manual Supplement is applicable to all Enstrom 480B model helicopters equipped with the optional Partial Wide Instrument Panel, P/N 4220600-5. 1-2. Supplemental Changes and Revisions A. Subsequent to the publication of the initial issue of this supplement, changes in the Partial Wide Instrument Panel, support concepts and procedures, as well as information developed by experience may affect the contents of this supplement.
  • Page 12 ENSTROM TH-28/480 SERIES MAINTENANCE MANUAL SUPPLEMENT 6 CAUTION Calls attention to methods and procedures that must be followed to avoid damage to equipment. NOTE Calls attention to information essential to highlight for clarification of procedures or to make a task easier.

  • Page 13: General Information

    Chelton EFIS system. The configuration provides the dual flight and navigation instrument functions, allows for both traditional instrument and EFIS training, and allows the Enstrom 480B model to retain flexible cabin seating capability. UNCONTROLLED COPY WHEN DOWNLOADED OR PRINTED Nov 15/10 Visit www.enstromhelicopter.com for instructions to order an original manual and to register for email notification of updates.
  • Page 14 ENSTROM TH-28/480 SERIES MAINTENANCE MANUAL SUPPLEMENT 6 INTENTIONALLY LEFT BLANK UNCONTROLLED COPY WHEN DOWNLOADED OR PRINTED Nov 15/10 Visit www.enstromhelicopter.com for instructions to order an original manual and to register for email notification of updates.

  • Page 15: Airworthiness Limitations

    ENSTROM TH-28/480 SERIES MAINTENANCE MANUAL SUPPLEMENT 6 SECTION 3 AIRWORTHINESS LIMITATIONS 3-1. Airworthiness Limitations A. The Airworthiness Limitations section is FAA approved and specifies maintenance required under 14 CFR §§ 43.16 and 91.403 unless an alternative program has been FAA approved.
  • Page 16 ENSTROM TH-28/480 SERIES MAINTENANCE MANUAL SUPPLEMENT 6 INTENTIONALLY LEFT BLANK UNCONTROLLED COPY WHEN DOWNLOADED OR PRINTED Nov 15/10 Visit www.enstromhelicopter.com for instructions to order an original manual and to register for email notification of updates.

  • Page 17: Servicing And Periodic Inspections

    ENSTROM TH-28/480 SERIES MAINTENANCE MANUAL SUPPLEMENT 6 SECTION 4 SERVICING AND PERIODIC INSPECTIONS 4-1. Servicing A. No servicing is required other than that described as part of the required inspection in Paragraph 4-2. 4-2. Periodic Inspections A. The following inspection checklist is intended as a guide for 100 hour/annual inspections for aircraft operating under normal conditions.
  • Page 18 ENSTROM TH-28/480 SERIES MAINTENANCE MANUAL SUPPLEMENT 6 INTENTIONALLY LEFT BLANK UNCONTROLLED COPY WHEN DOWNLOADED OR PRINTED Nov 15/10 Visit www.enstromhelicopter.com for instructions to order an original manual and to register for email notification of updates.

  • Page 19: System Maintenance

    ENSTROM TH-28/480 SERIES MAINTENANCE MANUAL SUPPLEMENT 6 SECTION 5 SYSTEM MAINTENANCE NOTE Removal or installation of equipment will change the aircraft empty weight and empty weight c.g. These changes will be recorded on Form F-511-5, Basic Weight and Balance Record, as required (reference Enstrom TH-28/480 Series Maintenance Manual).

  • Page 20: Inspection

    ENSTROM TH-28/480 SERIES MAINTENANCE MANUAL SUPPLEMENT 6 G. Remove the instrument panel. 5-4. Inspection A. Inspect the instrument panel and braces for cracks, scratches, warpage, and security of installation. B. Inspect the placards and decals for legibility. C. Inspect the rheostats and switches for missing and loose knobs.
  • Page 21 ENSTROM TH-28/480 SERIES MAINTENANCE MANUAL SUPPLEMENT 6 Item Component Part Number Quantity Rotor and Power Turbine Tachometer (Dual Tach) ECD4053-6 Airspeed Indicator ECD4050-1 Altimeter 5934PD-3 A.253 Fuel Quantity Indicator ECD4038-5 Transmission Temp. Indicator ECD4044-5 Torque Indicator ECD4043-7 Engine Oil Temp./Press. Indicator...
  • Page 22 ENSTROM TH-28/480 SERIES MAINTENANCE MANUAL SUPPLEMENT 6 INTENTIONALLY LEFT BLANK UNCONTROLLED COPY WHEN DOWNLOADED OR PRINTED Nov 15/10 Visit www.enstromhelicopter.com for instructions to order an original manual and to register for email notification of updates.

This manual is also suitable for:

Th-480 series

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