DG Flugzeugbau LS4 - 0.4 Airworthiness Limitations; 0.4.1 Repairs; 0.4.2 Life time of the airframe; 0.4.3 Life time of equipment and components

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
0-8
Section Content……………………………………………………………..page
1.12 Oxygen system ....................................................................................... 1-10
1.12.1 LS4 and LS4-a Oxygen system ........................................................ 1-10
1.12.2 LS4-b Oxygen system ...................................................................... 1-10
1.13 Landing gear .......................................................................................... 1-11
1.14 Wheel Brake ........................................................................................... 1-12
1.15 Hint for working at the control systems ................................................ 1-13
1.16 Pressure ports ......................................................................................... 1-14
1.16.1 Pressure ports LS4, LS4-a: ............................................................... 1-14
1.16.2 Pressure ports LS4-b: ........................................................................ 1-14
1.17 Drain orifices ......................................................................................... 1-15
1.18 Colour coding of instrument lines ......................................................... 1-15
2 Mass and balance ..................................................................................... 2-1
2.1 Weighing procedure ................................................................................. 2-1
2.2 Calculation of loading limits, example .................................................... 2-3
2.2.1 Calculation of loading limits .............................................................. 2-3
2.2.2 Examples for calculation of loading limits ......................................... 2-5
2.3 Empty mass C.G. range ........................................................................... 2-6
2.4 Max. mass of non-lifting parts ............................................................... 2-17
2.4.1 Calculation of max. mass of non-lifting parts (standard water bags) .....
...................................................................................................... 2-17
2.4.2 Calculation of max. mass of non-lifting parts according to TN 4046
with water bags V112 according to TN 4047................................... 2-21
3 Inspections ............................................................................................... 3-1
3.1 Regular inspections .................................................................................. 3-1
3.1.1 Daily Inspections ................................................................................ 3-1
3.1.2 Annual Inspections ............................................................................. 3-1
3.2 Extraordinary inspections after heavy landings ....................................... 3-5
3.3 Inspection procedure for increase of service time ................................... 3-6
3.4 Lubrication schedule ................................................................................ 3-7
4 Working instructions ................................................................................ 4-1
4.1 Removal and installation of control surfaces ........................................... 4-1
4.1.1 Ailerons ............................................................................................... 4-1
4.1.2 Elevator ............................................................................................... 4-3
4.1.3 Rudder ................................................................................................. 4-4
4.2 Installation of control surface gap sealings and turbulators .................... 4-5
4.2.1 Installation of internal seals ................................................................ 4-5
4.2.2 Gap seals aileron ................................................................................. 4-6
4.2.3 Gap sealings elevator .......................................................................... 4-7
4.2.4 Gap seals rudder ................................................................................. 4-7
4.2.5 Turbulator on lower wing surface ...................................................... 4-8