Garmin GTX 33 Installation Manual - Page 26

Installation Approval Considerations for Pressurized Aircraft, 2.6 Cooling Air - antenna spacing

Get Garmin GTX 33 PDF manuals and user guides View all Garmin GTX 33 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 26 highlights

2.4.1 Cable Routing Considerations When routing antenna cables, observe the following precautions: • All cable routing should be kept as short and as direct as possible • Avoid sharp bends • Avoid routing cables near power sources (e.g., 400 Hz generators, trim motors, etc.) or near power for fluorescent lighting • Avoid routing antenna cables near ADF antenna cable (allow at least a 12-inch separation) 2.5 Installation Approval Considerations for Pressurized Aircraft Antenna and cable installations on pressurized cabin aircraft require FAA approved installation design and engineering substantiation data whenever such installations incorporate alteration (penetration) of the cabin pressure vessel by connector holes and/or mounting arrangements. Use of existing bulkhead connectors previously approved by other means is permissible without additional approval. For needed engineering support pertaining to the design and approval of such pressurized aircraft antenna installations, it is recommended that the installer proceed according to any of the following listed options: 1. Obtain approved antenna installation design data from the aircraft manufacturer. 2. Obtain an FAA approved Supplemental Type Certificate (STC) pertaining to and valid for the subject antenna installation. 3. Contact the FAA Aircraft Certification Office in the appropriate Region and request identification of FAA Designated Engineering Representatives (DERs) who are authorized to prepare and approve the required antenna installation engineering data. 4. Obtain FAA Advisory Circular AC-183C and select (and contact) a DER from the roster of individuals identified thereunder. 5. Contact an aviation industry organization such as the Aircraft Electronics Association and request their assistance. 2.6 Cooling Air Refer to the G1000 System Installation manual, Garmin part number 190-00303-00, for information on cooling requirements. For remote mounted units, forced air cooling is not required. However, the application of forced air cooling is recommended to provide beneficial cooling if the unit is located in a confined space or near a source of heat. A 5/8 inch air fitting is provided on the rear of the backplate for the purpose of admitting cooling air under such conditions. If a form of forced air cooling is installed, make certain that rainwater or condensation cannot enter and be sprayed on the equipment. GTX 33 Installation Manual Page 2-6 190-00906-00 Rev. F

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
GTX 33 Installation Manual
190-00906-00
Page 2-6
Rev. F
2.4.1
Cable Routing Considerations
When routing antenna cables, observe the following precautions:
•
All cable routing should be kept as short and as direct as possible
•
Avoid sharp bends
•
Avoid routing cables near power sources (e.g., 400 Hz generators, trim motors, etc.) or near power
for fluorescent lighting
•
Avoid routing antenna cables near ADF antenna cable (allow at least a 12-inch separation)
2.5
Installation Approval Considerations for Pressurized Aircraft
Antenna and cable installations on pressurized cabin aircraft require FAA approved installation design and
engineering substantiation data whenever such installations incorporate alteration (penetration) of the
cabin pressure vessel by connector holes and/or mounting arrangements. Use of existing bulkhead
connectors previously approved by other means is permissible without additional approval.
For needed engineering support pertaining to the design and approval of such pressurized aircraft antenna
installations, it is recommended that the installer proceed according to any of the following listed options:
1.
Obtain approved antenna installation design data from the aircraft manufacturer.
2.
Obtain an FAA approved Supplemental Type Certificate (STC) pertaining to and valid for the
subject antenna installation.
3.
Contact the FAA Aircraft Certification Office in the appropriate Region and request
identification of FAA Designated Engineering Representatives (DERs) who are authorized to pre-
pare and approve the required antenna installation engineering data.
4.
Obtain FAA Advisory Circular AC-183C and select (and contact) a DER from the roster of indi-
viduals identified thereunder.
5.
Contact an aviation industry organization such as the Aircraft Electronics Association and request
their assistance.
2.6
Cooling Air
Refer to the G1000 System Installation manual, Garmin part number 190-00303-00, for information on
cooling requirements. For remote mounted units, forced air cooling is not required. However, the
application of forced air cooling is recommended to provide beneficial cooling if the unit is located in a
confined space or near a source of heat.
A 5/8 inch air fitting is provided on the rear of the backplate for the purpose of admitting cooling air under
such conditions. If a form of forced air cooling is installed, make certain that rainwater or condensation
cannot enter and be sprayed on the equipment.