ENSTROM TH-28 Series Guida alla configurazione
Rev. 3
i Mar 21/16
ENSTROM TH-28/480 SERIES MAINTENANCE MANUAL
SUPPLEMENT 2
EMERGENCY POP OUT FLOATS
The Airworthiness Limitations Section is FAA approved and specifies
inspections and other maintenance required under 14 CFR §§ 43.16 and
91.403 of the Federal Aviation Regulations unless an alternative program
has been FAA approved.
Copyright 2001, 2016 by
The Enstrom Helicopter Corporation
2209 22
nd
Street
Menominee, Michigan 49858-3515
Telephone: 906-863-1200
Fax: 906-863-6821
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ENSTROM TH-28/480 SERIES MAINTENANCE MANUAL SUPPLEMENT 2
Rev. 3
ii Mar 21/16
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ENSTROM TH-28/480 SERIES MAINTENANCE MANUAL SUPPLEMENT 2
Rev. 3
iii Mar 21/16
RECOMMENDED CHANGE REPORT
This maintenance manual is prepared and distributed by The Enstrom Helicopter Corporation
and is intended for use by personnel responsible for maintaining Enstrom 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:
The Enstrom Helicopter Corporation
2209 22nd Street
Menominee, MI 49858-3515
ATTN: Technical Publications
Manual Identification: Enstrom TH-28/480 Series Maintenance Manual Supplement 2
Manual Date: February 9, 2001
Revision Number and Date:
Aircraft Model:
Recommended Change:
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ENSTROM TH-28/480 SERIES MAINTENANCE MANUAL SUPPLEMENT 2
Rev. 3
iv Mar 21/16
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ENSTROM TH-28/480 SERIES MAINTENANCE MANUAL SUPPLEMENT 2
Rev. 3
v Mar 21/16
RECORD OF REVISIONS
REV
NO. ISSUE
DATE DATE
INSERTED BY REV NO. ISSUE
DATE DATE
INSERTED BY
3 Mar 21/16
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ENSTROM TH-28/480 SERIES MAINTENANCE MANUAL SUPPLEMENT 2
Rev. 3
vi Mar 21/16
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ENSTROM TH-28/480 SERIES MAINTENANCE MANUAL SUPPLEMENT 2
Rev. 3
vii Mar 21/16
TABLE OF CONTENTS
Paragraph 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. Aircraft Effectivity.............................................................................1-1
1-2. Supplemental Changes and Revisions ...........................................1-1
1-3. Application of Warnings, Cautions, and Notes................................1-1
Section 2 General Information
2-1. System Description .........................................................................2-1
2-2. Equipment and Consumables.........................................................2-2
2-3. Vendor Manuals..............................................................................2-3
Section 3 Airworthiness Limitations
3-1. Airworthiness Limitations.................................................................3-1
Section 4 Servicing, General Maintenance, Periodic Inspections, and
Recommended Overhaul Cycles
4-1. Servicing..........................................................................................4-1
4-2. Reservoir Cylinder...........................................................................4-1
4-3. General Maintenance......................................................................4-3
4-4. Testing.............................................................................................4-3
4-5. Testing Setup..................................................................................4-3
4-6. Float Pressure Test.........................................................................4-3
4-7. Topping-Off Valve Leakage Test.....................................................4-4
4-8. Pressure Relief Valve Test..............................................................4-5
4-9. Cleaning..........................................................................................4-5
4-10. Float Assembly...........................................................................4-5
4-11. Troubleshooting...............................................................................4-6
4-12. Periodic Inspections........................................................................4-6
4-13. Periodic Inspection Checklist ..........................................................4-7
4-14. Recommended Overhaul Cycles.....................................................4-8
Section 5 Component Maintenance
5-1. Float Assembly................................................................................5-1
5-2. Removal......................................................................................5-1
5-3. Inspection ...................................................................................5-1
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ENSTROM TH-28/480 SERIES MAINTENANCE MANUAL SUPPLEMENT 2
Rev. 3
viii Mar 21/16
TABLE OF CONTENTS
Paragraph Description Page
5-4. Repair.........................................................................................5-1
5-5. Valve Removal/Replacement .....................................................5-2
5-6. Cover Replacement....................................................................5-3
5-7. Installation...................................................................................5-5
5-8. Packing.......................................................................................5-5
5-9. Reservoir Cylinder...........................................................................5-6
5-10. Removal......................................................................................5-6
5-11. Inspection ...................................................................................5-6
5-12. Repair.........................................................................................5-6
5-13. Valve Overhaul...........................................................................5-7
5-14. Installation...................................................................................5-8
5-15. Activation Cable ............................................................................5-10
5-16. Removal....................................................................................5-10
5-17. Inspection .................................................................................5-10
5-18. Repair.......................................................................................5-10
5-19. Installation.................................................................................5-10
5-20. Hoses, Lines, and Fittings.............................................................5-12
5-21. Removal....................................................................................5-12
5-22. Inspection .................................................................................5-12
5-23. Repair.......................................................................................5-12
5-24. Installation.................................................................................5-12
5-25. Pylon Support Struts .....................................................................5-13
5-26. Removal....................................................................................5-13
5-27. Inspection .................................................................................5-13
5-28. Repair.......................................................................................5-14
5-29. Installation.................................................................................5-14
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ENSTROM TH-28/480 SERIES MAINTENANCE MANUAL SUPPLEMENT 2
Rev. 3
ix Mar 21/16
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ENSTROM TH-28/480 SERIES MAINTENANCE MANUAL SUPPLEMENT 2
Rev. 3
x Mar 21/16
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Altri manuali per TH-28 Series
1
Questo manuale è adatto per i seguenti modelli
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