Avionics & Electrical System
SONEX Onex · Checklist
Overview
This document serves as a checklist for the Sonex Onex aircraft, focusing on the avionics and electrical systems. It includes recommendations for wiring, circuit design, and installation of electrical components.
- Custom electrical schematics are not provided due to the nature of amateur-built aircraft.
- Recommended wire type is MIL-W-22759/16.
- All wire sizes must be properly sized for load and length.
- Consult manufacturer's recommendations for avionics installation.
- Refer to Advisory Circular AC 43.13 for additional guidance.
- AeroVee engines require specific wiring per their assembly manual.
- Consult regulatory agencies for minimum equipment requirements.
- A flight manual is available for recording equipment lists.
Document
Source
Originally published by sonexaircraft.com. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.
Document details
- Type ·
- Checklist
- File size ·
- 83 KB
- Publisher ·
- sonexaircraft.com
- Language ·
- en
Specifications & performance
Extracted from this document.
Specifications
- Fuel tank depth (in) ·
- 6 3/4
- Instrument depth (in) ·
- 3/4
- Instrument panel width (in) ·
- 24 13/16
Performance
- Max cruise speed mph ·
- 151
- Stall speed flaps mph ·
- 40
- Never exceed speed mph ·
- 217
- Stall speed no flaps mph ·
- 50
V-speeds
- VA_MPH ·
- 151
- VFE_MPH ·
- 110
- VNE_MPH ·
- 217
What is the Avionics & Electrical System?
The Avionics & Electrical System is a checklist for the SONEX Onex.
Where does the Avionics & Electrical System come from?
This copy of the Avionics & Electrical System was originally published by sonexaircraft.com and is hosted on Sprinkle as a free, searchable reference copy.
Most owners only have the POH. Here's the essential set for the SONEX Onex.
- Pilot's Operating Handbook / AFM
- Checklist
- Maintenance Manual
- Parts Catalog (IPC)
- Systems & Wiring
- Service Bulletins on file
- Type Certificate (TCDS)
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In this document
Electrical System Design Recommendations
This section outlines the custom nature of electrical systems in amateur-built aircraft and provides guidelines for wire types and sizes.
Engine Related Wiring
Details the wiring requirements for AeroVee engines, referencing the assembly and installation manual.
Pitot / Static System Diagram
Illustrates the connections for the pitot and static systems, including various instruments.
Airspeed Indicator Markings
Describes the airspeed indicator markings, including stall speeds and maximum speeds.
Master Electrical & Avionics Equipment and Load List
Provides a framework for documenting the electrical load and equipment used in the aircraft.
Instrument Panel Flat Pattern
Offers a pattern for planning the layout of instruments on the panel.
Safety notes
- Consult the documentation for each electrical component for specific installation requirements.
- Ensure all electrical accessories are installed per manufacturer's recommendations.
- The circuit design must include overload protection.
- The bottom edge of the instrument cannot be lower than specified dimensions to avoid interference.
Full document text
None Avionics & Electrical System ONX-E01 N/C ONX-B04 -01 1 Avionics& Electrical System onex Revision Drawing Number Drawing Scale Dash Number Quantity Required Next Assembly Part Title The information disclosed herein is the property of the originator who reserves all patent, design, proprietary, manufacturing, use and sales rights thereto, except for the rights expressly granted to others. This document shall not be reproduced nor shall the information contained within be used by or disclosed to others except as expressly authorized by the originator. Revision Letter Change Discription Power Distribution Wiring Diagram MAIN POWER BUS (Fuse Block or Circuit Breakers) Master Relay Master Switch + - 12V Battery 4 gauge 4 gauge Circuits to Avionics / Electronics Panel Switches Consult the documentation provided with each electrical component you are installing to determine the switch, wire size, circuit design and fusing requirements for each component. Airframe Ground This circuit is a basic power feed circuit from the battery to a fuse block or circuit breakers. Suggested wire sizes are shown but may need to be changed to suit your particular installation. 8 gauge 20 gauge Electrical System Design Recommendations: Because of the custom nature of Amateur built aircraft, it is beyond the scope of Sonex Aircraft, LLC to provide an all-encompassing electrical schematic. 1. Recommended wire type is MIL-W-22759/16 2. All wire sizes to be properly sized for load and wire length. 3. Avionics must be installed per manufacturer's recommendations. This includes circuit design, overload protection, wire size, switching, etc. 4. Electrical accesories (lights, power outlets, etc.) must be installed per manufacturer's recommendations. This includes circuit design, overload protection, wire size, switching, etc. 5. In the absence of specifc guidance, consult Advisory Circular AC 43.13. Engine Related Wiring AeroVee engines must be wired per the schematics (starter, ignition, and charging circuits) detailed in the AeroVee Assembly and Installation manual. Pitot / Static System Diagram Static Line Pitot Pressure Line Pitot Probe Static Ports Airspeed Indicator Vertical Speed Indicator Altimeter EFIS Item or Description Fuse Size Master Electrical & Avionics Equipment and Load List Total: Load (amps) Note: Consult proper regulatory agency (FAA, CAA, PFA, etc.) for minimum equipment requirements to license your aircraft. Note: Sonex Aircraft, LLC provides a Flight Manual in which you can record your aircraft's equipment list. MPH Air Speed 180 160 140 120 100 80 60 40 200 White Arc from 40 MPH to 110 MPH (Stall Speed with Flaps to Maximum Flap Extention Speed) Green Arc from 50 MPH to 151 MPH (Stall Speed with no Flaps to Maximum Structural Cruise Speed Vc ) Yellow Arc from 151 MPH to 217 MPH (Structural Cruise Speed to Never Exceed Speed) Red Arc from 217 MPH and Up (Never Exceed Speed) Airspeed Indicator Markings (Shown on Mechanical ASI) Section B-B Reference Dimensions for Instrument Installation A A Approx. Max. Instrument Depth Fuel Tank 6 3/4" [171.45mm] 3/4" [19.05mm] 7 3/4" [196.856mm] Bottom Edge of Instrument can not be lower than dimension shown in order to clear cross menber Cross member View A-A Instrument Panel Flat Pattern Use this pattern together with Section B-B to plan your instrument layout. Onex Prototype N111NX Equipment Scale: 1/2 FUEL VALVE FORWARD ON MAG IGN 12V IGN START MASTER INSTR RADIO WARNING MGL RADIO N111NX MGL G-METER VNE VA VFE 217 MPH 151 MPH 110 MPH RADIO JACKS 12V AUX ASI GS --- TAS --- ALT 104 5177 VSI MGL XTreme R 13 57/64" [R 352.893mm] 7 3/4" [196.85mm] B B 12 13/32" [315.039mm] 24 13/16" [630.06mm]