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DG Flugzeugbau LS4-b User Manual

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Maintenance Manual LS4
Issued: May 2011
Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited
Manual valid with the up-to-date cover page only
0-1
Recommendations to order spare parts
Please try to determine the exact designations of the spare parts for your order
using the maintenance manual. This is to guarantee a fast and correct delivery of
the parts.
The designations are to find in the sections system description, instructions for
assembly and servicing work and especially in the diagrams of the maintenance
manual.
Yours sincerely
DG FLUGZEUGBAU GMBH
Dipl.- Ing. W. Dirks

Table of Contents

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DG Flugzeugbau LS4-b Specifications

General IconGeneral
BrandDG Flugzeugbau
ModelLS4-b
CategoryPlaner
LanguageEnglish

Summary

Airworthiness Limitations

Repairs

Guidelines for repairing airframe parts and requirements for major repairs.

Life Time of the Airframe

Specifies the maximum operating time and inspection intervals for the airframe.

Life Time of Equipment and Components

Defines lifespan limitations for safety harness and other components.

Service Time, Maintenance Documents of Equipment and Components

Outlines requirements for manufacturer's documentation for equipment.

Description of Systems

Mass and Balance

Weighing Procedure

Step-by-step guide for weighing the sailplane and determining CG.

Calculation of Loading Limits

Provides examples for calculating loading limits and cockpit load.

Empty Mass C.G. Range

Tables showing CG ranges based on empty mass for different cockpit loads.

Max. Mass of Non-lifting Parts

Defines maximum non-lifting parts mass, considering water ballast and TNs.

Inspections

Regular Inspections

Outlines regular inspection procedures, including daily and annual checks.

Extraordinary Inspections After Heavy Landings

Specifies components requiring extraordinary inspection after rough landings.

Inspection Procedure for Increase of Service Time

Details the procedure for extending the glider's service time through inspections.

Working Instructions

Removal and Installation of Control Surfaces

Instructions for removing and installing wing, elevator, and rudder control surfaces.

Removal and Installation of the Wing Water Ballast Bags

Guides on removing and installing wing water ballast bags.

Tail Fin Water Ballast Tank Removal

Details the removal of the tail fin water ballast tank.

Removal and Installation of the C.G. Hook

Explains the removal and installation process for the C.G. hook.

Removal and Installation of the Nose Hook (Option)

Provides instructions for removing and installing the optional nose hook.

Canopy Emergency Release

Details the procedure for checking and operating the canopy emergency release.

Control Surfaces

Control Surface Weight and Mass Balance

Details the weight and mass balance requirements for control surfaces.

Placards and Markings

Permanent Installation of Fixed Ballast and Equipment

Fixed Ballast Under Instrument Panel

Details the installation of fixed ballast under the instrument panel for CG adjustment.

Fixed Ballast at Rear Fuselage End

Explains the installation of rear ballast for CG adjustment.

Materials for Repair

Repairs

Repairs of Composite Structures, General

Provides general guidelines and definitions for minor damage in composite structures.

Instructions for FRP Repairs

Basic principles for FRP repairs, including material use and postcuring.

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