Extra 300LT - Chapter 51 Standard Practices and Structures - General

CHAPTER 51
PAGE 2
PAGE DATE: 21. March 2014
MAINTENANCE MANUAL EXTRA 300LT
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
51-30-03 Aluminium Components . . . . . . . . . . . . . . . . . . . . . . . 14
51-30-04 Various Components . . . . . . . . . . . . . . . . . . . . . . . . . . 15
51-60-00 CONTROL SURFACE BALANCING . . . . . . . . . . . 18
51-60-01 Weighing and Determination of Control Surface
Moments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 2 Balancing Mandrels . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 3 Determination of Control Surface Moments . . . . . . . 20
Figure 4 Control Surface Weights and Moments . . . . . . . . . . . 21
51-70-00 REPAIRS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
51-70-01 Repair of Reinforced Glass and Carbon Fibre
Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
51-70-02 Repair of Sandwich Material . . . . . . . . . . . . . . . . . . . . 24
Figure 5 Minor surface damage . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 6 Curing cycle resin L20/SL . . . . . . . . . . . . . . . . . . . . . 26
Figure 7 Level Sanding of Surrounding Area. . . . . . . . . . . . . . 26
Figure 8 Damage of Complete Sandwich . . . . . . . . . . . . . . . . . 28
51-70-03 Repair of Laminates . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 9 Repair of minor damage. . . . . . . . . . . . . . . . . . . . . . . 31
51-70-04 Repair of Spars . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
51-70-05 Structural Repair of Steel Components . . . . . . . . . . . . 33
51-70-06 Painting of Composite Parts . . . . . . . . . . . . . . . . . . . . 34
51-70-07 Aluminium and Steel Components Refinishing . . . . . . 35
51-70-08 Re-Bonding of Bushings . . . . . . . . . . . . . . . . . . . . . . . 38
Figure 10 Empennage Attachment Bushings . . . . . . . . . . . . . . . 38
Figure 11 Wing Main Spar Attachment Flange Bushings . . . . . 41