Extra 300/SC - Chapter 51 Standard Practices and Structures - General

CHAPTER 51
PAGE 2
MAINTENANCE MANUAL EXTRA 300/SC
PAGE DATE: 1. August 2014
Table of Contents
Chapter/Figure Title
Chapter 51
51-00-00 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
51-00-01 Access Panel Identification . . . . . . . . . . . . . . . . . . . . . . 3
Figure 1 Access Panel Identification . . . . . . . . . . . . . . . . . . . . . 4
51-10-00 INVESTIGATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
51-10-01 Damage Classification. . . . . . . . . . . . . . . . . . . . . . . . . . 6
51-10-02 Repair Criteria and Limits . . . . . . . . . . . . . . . . . . . . . . . 7
51-30-00 MATERIALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
51-30-01 Composite Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
51-30-02 Metal Components . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
51-30-03 Aluminium Components . . . . . . . . . . . . . . . . . . . . . . . 12
51-30-04 Fabric . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
51-60-00 CONTROL SURFACE BALANCING . . . . . . . . . . . 15
51-60-01 Weighing and Determination of Control Surface Moments
15
Figure 2 Balancing Mandrels . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 3 Determination of Control Surface Moments . . . . . . . 17
Figure 4 Control Surface Weights and Moments . . . . . . . . . . . 18
51-70-00 REPAIRS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
51-70-01 Repair of Reinforced Glass and Carbon Fibre
Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
51-70-02 Repair of Sandwich Material . . . . . . . . . . . . . . . . . . . . 21
Figure 5 Minor surface damage . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 6 Curing cycle resin L20/SL . . . . . . . . . . . . . . . . . . . . . 23
Figure 7 Level Sanding of Surrounding Area. . . . . . . . . . . . . . 23
Figure 8 Damage of Complete Sandwich . . . . . . . . . . . . . . . . . 25
51-70-03 Repair of Laminates . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 9 Repair of minor damage. . . . . . . . . . . . . . . . . . . . . . . 28
51-70-04 Repair of Spars . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
51-70-05 Structural Repair of Steel Components . . . . . . . . . . . . 31
51-70-06 Repair of Fabric. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
51-70-07 Painting of Composite Parts . . . . . . . . . . . . . . . . . . . . 32
51-70-08 Aluminium and Steel Components Refinishing . . . . . . 33
51-70-09 Re-Bonding of Bushings . . . . . . . . . . . . . . . . . . . . . . . 36
Figure 10 Empennage attachment bushings . . . . . . . . . . . . . . . 36
Figure 11 Wing main spar attachment flange bushings . . . . . . . 39