Page
23
Section 1 Boom Tube
Section 1
Section 1
Maintenance & Inspection
Pitman Air
BOOM TUBE
Assemble the internal and external parts in the following manner. Take care that each bolt that passes through the 5” boom or
fuselage tube also passes through an internal tube or sleeve, so that the boom tube will not be squeezed out of round when bolts
are tensioned.
An internal steel truss is fitted centrally. The release cable should be fitted now if the Dragonfly is to have a tow system.
Take care that it remains in the position that it is fitted.
STEP
INSTRUCTIONS for Assembly, for Disassembly reverse the order!
PART NO. STAGE CERT.
1
Bolt AN4-21A, 1/4" washer,
tail plate mount block,
boom tube truss assembly,
tail plate load tube.
Very tight.
DFP 014
DFW 041
DFC 024
2
Bolt AN4-56A through
aft root supp brkt lower 912,
saddle aft root supp brkt 912,
boom tube, 1/4" washer, AN4 full nut.
Very tight.
DFO-047
DFP 019
3
Bolt AN4-65A through aft root supp brkt lower 582 / aft root supp brkt lower 912, saddle
aft root supp brkt 582 / saddle aft root supp brkt 912, boom tube,
spacer main boom-wire .875” x .75” x .25”,
tang three hole,
AN4 full nut.
Very tight.
DFP 026
DFO 032
4
100 hr
Two bolt AN3-6A through 3/16" washer in each of two
push rod guide,
boom tube.
Very tight Maximum 0.090” space around Push Rod..
Note:
Apply dry lube to pushrod where it passes through guide every 100 hrs or Annual
DFP 005
5
100 hr
Eye bolt AN42 - 4A
through boom tube. Flat end of eye bolt is at right angle with boom tube when tight.
Tight.
DFT 201
6
Replacement Insructions
release cable
Using old cable to pull new cable through, tape the new
release cable
to the old cable
and pull through. Bring the aft end of the release through the 1/2” hole to align with the
release boom.
DFQ 010
(1)
Recommended Special Tools:
None
(2)
The parts needed to perform the task:
Replace worn/damaged parts as needed, listed above. Max. Wear (defined 1.1.8.1)
(3)
Type of maintenance:
Inspection=Line & Replacement=Heavy
(when it involves replacement of structural components.)
(4)
Certification needed to accomplish the task:
LSRI Inspection or above,
see:
3 Level of Certification in this manual
(5)
Detailed instructions and diagrams as needed to perform the task, listed above and adjacent page.
Every Annual or 100 Hrs., Inspect for Cracks, Corrosion, Elongation of holes & Fasteners for Wear & Security.
#4 Pushrod Guides, maximum of 0.090 slop, use 0.040 safety wire on each side as feeler gauge.
#5 Check for loose Rivnuts. Repair as needed by using 10-32 Rivnut or Threaded Insert tool to tighten or replace.
#4
Apply dry lube to pushrod where it passes through guide every 100 hrs or Annual
(6)
Method to test/inspect to verify the task was accomplished properly.
Insure that all procedures were followed correctly
and there is proper non-binding movement to moving parts and that fasteners were tightened as instructed. When flight
controls are involved, assure that they are operating properly.
Summary of Contents for 912 Dragonfly
Page 3: ...Page 2 ...
Page 4: ...Page 3 ...
Page 5: ...Page 4 ...
Page 25: ...Page 24 Drawing 1 ...
Page 27: ...Page 26 Drawing 2 ...
Page 29: ...Page 28 Drawing 3 ...
Page 31: ...Page 30 Drawing 4 ...
Page 33: ...Page 32 Drawing 5 ...
Page 35: ...Page 34 Drawing 6 ...
Page 37: ...Page 36 Note for Hydraulic Brakes see Appendix B Drawing 7 ...
Page 39: ...Page 38 Drawing 8 ...
Page 41: ...Page 40 Drawing 9 ...
Page 43: ...Page 42 Drawing 10 ...
Page 45: ...Page 44 Drawing 11 ...
Page 47: ...Page 46 Drawings 12A 12B ...
Page 49: ...Page 48 Drawing 13 ...
Page 51: ...Page 50 Drawing 14 ...
Page 53: ...Page 52 Drawing 15 ...
Page 55: ...Page 54 Drawing 16 ...
Page 57: ...Page 56 Drawing 17 ...
Page 59: ...Page 58 Drawing 18 ...
Page 61: ...Page 60 Drawing 19 ...
Page 63: ...Page 62 Drawing 20 ...
Page 65: ...Page 64 Drawing 21 ...
Page 67: ...Page 66 Drawing 22 ...
Page 69: ...Page 68 Drawing 23 ...
Page 71: ...Page 70 Drawing 24 ...
Page 73: ...Page 72 Drawing 25 ...
Page 75: ...Page 74 Drawing 26 ...
Page 77: ...Page 76 Drawing 27 ...
Page 79: ...Page 78 Wiring1 jpg Drawing 28a ...
Page 80: ...Page 79 Wiring2 jpg Drawing 28b ...
Page 81: ...Page 80 elecLights jpg Drawing 28c ...
Page 83: ...Page 82 Drawing 29 ...
Page 85: ...Page 84 Drawing 30 ...
Page 92: ...Page 91 Appendix B Brakes Manual for BX1320 BX1000 Appendix B Page 1 ...
Page 93: ...Page 92 Appendix B Page 2 ...
Page 94: ...Page 93 Appendix B Page 3 ...
Page 96: ...Page 95 Appendix B Page 5 ...
Page 97: ...Page 96 Appendix B Page 6 ...
Page 98: ...Page 97 Appendix B Page 7 ...
Page 104: ...Page 103 Figure 1a Description of Display Pages ...
Page 105: ...Page 104 Figure 1b Description of Display Pages ...
Page 138: ...Page 137 Appendix C EIS 4000 912 914 ...
Page 139: ...Page 138 Appendix C EIS 4000 912 914 ...
Page 140: ...Page 139 Appendix C EIS 4000 912 914 ...
Page 141: ...Page 140 Appendix C EIS 4000 912 914 End Appendix C ...
Page 155: ...Page 154 Appendix E2 Powerfin Prop Page 2 ...
Page 156: ...Page 155 Appendix E2 Powerfin Prop Page 3 ...
Page 157: ...Page 156 Appendix E2 Powerfin Prop Page 4 ...
Page 158: ...Page 157 Appendix E2 Powerfin Prop Page 5 ...
Page 159: ...Page 158 Appendix E2 Powerfin Prop Page 6 ...
Page 160: ...Page 159 Appendix E2 Powerfin Prop Page 7 ...
Page 161: ...Page 160 Appendix E2 Powerfin Prop Page 8 ...
Page 162: ...Page 161 Appendix E2 Powerfin Prop Page 9 ...
Page 163: ...Page 162 Appendix E2 Powerfin Prop Page 10 ...
Page 164: ...Page 163 Appendix E2 Powerfin Prop Page 11 End of Appendix E2 ...
Page 187: ...Page 186 By Memphis Soaring FIGURE 3 Common Signals ...