SONEX CONDITION INSPECTION CHECKLIST
SONEX Sonex A · Checklist
Overview
The Sonex Condition Inspection Checklist provides a comprehensive guide for conducting annual inspections on the Sonex A aircraft. It includes detailed inspection items for various aircraft components such as the engine, propeller, electrical systems, fuel system, fuselage, landing gear, wings, and empennage.
- Checklist includes inspection items for airframe, engine, and propeller.
- Specific torque values for various components are provided.
- Maintenance data includes oil types and capacities.
- Visual inspections are required for all major systems.
- Engine operational data includes maximum RPM and oil pressure ranges.
- Safety checks for fuel system and electrical components are emphasized.
- Logbook entry and signoff are required after inspection.
- Regular maintenance intervals for parts like propeller bolts and flywheel bolts are specified.
Summary written by AI from the source document. Check the original before relying on it. See which parts of Sprinkle are written by AI.
Reference only, not for flight. Use the current approved manual for your aircraft. See terms, section 5.
Document
Source
Copy found at sonexflight.com. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.
Document details
- Type ·
- Checklist
- File size ·
- 169 KB
- Copy found at ·
- sonexflight.com
- Language ·
- en
Specifications & performance
Extracted from this document.
Specifications
- Oil capacity qts ·
- 3.0 - 3.5
- Spark plug gap (in) ·
- 0.022 - 0.024
Performance
- Max rpm ·
- 3300
- Idle rpm ·
- 800-1000
- Oil pressure psi ·
- 33-76
Common. More common than 93% of the aircraft models we track.
Most owners only have the POH. Here's the essential set for the SONEX Sonex A.
- Pilot's Operating Handbook / AFM
- Checklist
- Maintenance Manual
- Parts Catalog (IPC)
- Systems & Wiring
- Service Bulletins on file
- Type Certificate (TCDS)
Free — save the SONEX to your watchlist and track it in one place.
More SONEX Sonex Amanuals & documents
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In this document
General Inspection
Includes checks for registration, airworthiness, cockpit placards, and overall cleanliness of the aircraft.
Engine Inspection
Covers periodic maintenance, oil changes, leak checks, and inspection of various engine components.
Electrical Inspection
Focuses on battery security, wiring harness condition, and the functionality of electrical components.
Fuel System Inspection
Involves checking fuel lines, caps, and the overall integrity of the fuel system.
Landing Gear Inspection
Details checks for wheel alignment, brake system, and overall condition of landing gear components.
Operational Inspection
Includes visual checks of the engine and propeller, as well as RPM checks during run-up.
Summary written by AI from the source document. Check the original before relying on it. See which parts of Sprinkle are written by AI.
Safety notes
- Re-torque prop bolts to specified values to ensure security.
- Inspect for leaks at all seals and gaskets to prevent engine failure.
- Check for cracks and security in the fuel system to avoid fuel leaks.
- Ensure all inspection panels and fairings are secure before flight.
- Replace flywheel bolts every 500 hours to maintain engine integrity.
- Log all findings and repairs in the aircraft log books.
Summary written by AI from the source document. Check the original before relying on it. See which parts of Sprinkle are written by AI.
Full document text
SONEX CONDITION INSPECTION CHECKLIST AIRCRAFT: Make_________________ SN_________________ REGISTRATION: N________________ ENGINE: Model_________________ SN_________________ PROPELLER: Model_________________ SN_________________ (This Annual) (Last Annual) DATE: _________________ ________________ TT AIRFRAME: _________________ ________________ TT ENGINE: _________________ ________________ TT PROPELLER: _________________ ________________ Inspection Item S A T U N S A T Notes General: Registration/Airworthiness/Operation Limitations Aircraft Identification Plates Installed All Cockpit Placards and Labels are Installed and Legible Experimental & Passenger Warning Placards Installed Weight and Balance/Equipment List Dynon Updated with Latest Software and Maps Remove covers, fairings, inspection panels Wash airplane exterior, degrease and clean belly, clean and vacuum interior Propeller: Check Spinner for Condition and Security Inspect Prop for Cracks/Stone Damage/Nicks Check Prop for Delamination or Burning on Hub Re-torque Prop Bolts to 17 +/-3 ft-lbs (200 +/-20 in-lbs) Check Prop Tracking (Max 1/8” off at tips) Rebalance Prop After Making Any Repairs Replace Prop Flange Cap Screws every 500 hrs; Torque Cap Screws to 30 ft-lbs. Page 1 of 8 Sonex Condition Inspection Checklist Inspection Item S U Notes Engine: Perform Periodic Maintenance per Jabiru Maintenance Manual Warm Engine until Oil Temp is 90-100 deg F Perform Compression Test (engine warm) #1______ #2_______ #3______ #4______#5______ #6______ Drain and Replace Oil (3-3.5 qts, + Optional 3-4 oz Cam Guard) Replace Oil Filter (Cut Open and Check for Metal); Torque Filter Hand Tight Inspect Engine for Leaks at all Seals, Sensors, and Gaskets Inspect Cylinders for Cracks/Broken Fins/Exhaust Stains Check Exhaust Pipes/Flanges/System for Security, Attachment and Condition; Torque Attachment Screws to 8 ft-lbs Inspect Front Crankcase Seal for Damage or Leaks Inspect Engine Case, Accessory, and Mounting Bolt Torque Inspect Engine Mount/Bushings Inspect Oil Recovery Bottle and Engine Breather Line Inspect Intake Manifold and Manifold-Intake Tube Seals for Security/Leaks Check Rubber Intake Tube Couplers for Heat Damage, Cracking, and Security Inspect Ignition and Wiring Harness, Cap and Boots for Condition and Continuity Clean and Gap Spark Plugs (NGK D9EA) to 0.022-0.024”, Apply Anti-seize Lube and Torque to 8 ft-lbs (72 in-lbs) Remove Rocker Chamber Covers; Inspect Rocker Arms, Pushrods, Valve Stems, Valve Springs; Note Oil Color, Quantity, and Evidence of Carbon Blow-by in Valve Guides Inspect Engine Baffles and Gull Wing Inter-cylinder Baffles for Cracks/Condition Inspect Oil Cooler, Cooler Flanges and Mounting Brackets, Oil Filter Adapter (Donut), Oil Lines, and Oil Pressure Sensor Inspect Carburetor, Rubber Boot, and Clamps for Condition and Security Inspect Throttle & Mixture Controls for Proper Travel, Cable for Cracks or Kinks, Loose Hardware, and Overall Security Clean and Re-oil K&N Air Filter (K&N Recharge Kit) Check Cowling for Cracks, Chaffing, Heat Damage and Security; Remove All Oil and Residue Page 2 of 8 Sonex Condition Inspection Checklist Inspection Item S U Notes Inspect Cowling SouthCo, Receptacles and Mounting Plates Replace Flywheel Bolts every 500 hrs Electrical: --Firewall Side-- Battery (Security, Mount, Cables, Free of Corrosion) Battery Box (Security, Mounts and Corrosion) Relays (Battery Contactor, Alternator Disconnect, Starter Relay, all Diodes) Filter Capacitor (Wires, Screws, Mount, Condition of Capacitor) Wiring Harness Loom, Sensor Wire Bundles, and Firewall Pass Thru Points Rectifier/Regulator (Condition, Corrosion, Heat Damage, Connector, Terminals, Wires, Mounts); Re-grease with Dow DP4 dielectric grease Fuses, Fuse Blocks, and Wiring for Condition and Security Grounding System (Cables, Grounding Block, Terminals) for Condition and Security --Cabin Side-- Visually Inspect Under Panel for Loose Wires, Chaffing or Damage Switches for Security, Arcing and Proper Operation 12v Accessory Sockets for Security and Proper Operation Seat Warmer Switches, Wiring, and Heating Pads for Chaffing, Overheating and Proper Operation Fuel System: --Firewall Side-- Fuel Cap and Rubber Plug for Condition and Security Fuel Tank Vent System (Obstructions, Damaged Rubber Coupler, Secure Clamps, Kinked Drain Tube) Filler Neck Drip Pan (Sealant Degradation, Leaks, Alignment) Fuel Placard Properly Legible and Affixed to Fuel Cover Door Fuel Line for Chafing/Leaks/Security/Condition Page 3 of 8 Sonex Condition Inspection Checklist Inspection Item S U Notes Inspect Quick Drain Valve (Mounting Security, Leaks or Damage) Draw Fuel Sample to Check for Water and Contaminants (4-8 oz); Test for Ethanol Content: Ethanol = ________ % Disassemble and Clean Fuel Filter Fuel Line Heat Shielding, Reflective Tape, and Insulation --Cabin Side-- Leaks/Weeping Fittings, Corrosion, Contamination Under Panel Shutoff Valve, Bowden Cable Pull Lever, Cable Clamp and Cable Attachment Bracket Flow Sender for Leaks or Damaged Wiring Fuel Line Under Panel for Chafing/Leaks/Security/Condition Aux Fuel Intake Hose, Molded-in Tank Fitting, Check Valve, and Fuel Hose Pigtail for Leaks, Damage, and Security Low Fuel Monitoring Camera for Mounting Security, Alignment, Tank Markings, Tank LED Lights Fuselage: --Outside-- Fire Wall for Distortion, Cracks, Missing RTV Sealant at Edges, or Degraded Firewall Penetrations Cowl Mounting Hinges (Excessive Wear or Damage) Lose/Smoking Rivets, Lose Bolts, Cracked Skin --Inside-- Canopy Latching Mechanism Instruments, Pitot/Static/AoA Lines, Labels and Marking for Condition and Security Remove Seat (Cushions and Seat Pan) and Inspection Covers Wing Attach Bolts, Mounting Angles, and Adjacent Skin for Deformation, Cracks, Missing Hardware, Security Seats, Seat Belts/Shoulder Harness for Security and Attachment Upholstery (Condition, Velcro Security, Cleanliness, Seat Warmers and Wiring)
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Inspect and Service ELT (Clean/Replace Batteries, Antenna Cable, Mounting Tray) (Bat Exp Date:__________________) COMM, ELT and Transponder Antennas (Security, Corrosion, Proper Grounding); Re-lube with DP4 Page 4 of 8 Sonex Condition Inspection Checklist Inspection Item S U Notes Rudder Pedals for Cracks, Operation and Security of Bolts/Cotter Pins Flap Control Operation and Bolts for Security Control Stick for Wear, Freedom of Movement, and Security of Bolts/Cotter Pins Lube Control Triangle Bushings and Elevator Pushrod Link and Bellcrank Bushings (LPS1) Baggage Compartment Sides and Floor for Cleanliness, Condition and Security Rear Spar Carry Thru for Condition, Wear, and Security of Bolts Remote Transponder, Connector, Antenna and Mounting Tray Elevator Pushrod Support Snap Bushings for Wear, Security and Condition; Lube Bushings with White Lithium Grease Landing Gear: Remove Wheel Pants and Gear Fairings Wheel Pants for Cracks, Damaged or Elongated Holes, Stripped Nutplates Gear Leg and Intersection Fairings for Cracks or Excessive Wear Gear Leg Stiffeners for Delamination, Cracked Fiberglass and Broken Wood Inserts Wheel Pant Mounting Plate (Cracks, Loose Bolts, Alignment) Inspect Wheel Alignment and Tire Wear Pattern Wheels/Tires for Cracks, Tread Depth and Serviceability Jack up Fuselage and Remove Wheels; Inspect Gear Leg Upper Bolts (AN4-33A) and Axel Socket Lower Bolts (AN4-16A); Replace every 500 hrs Inspect Brake System for Air Bubbles or Loss of Fluid Pressure Remove Brake Calipers, Wheels and Bearings Verify Brake Pucks are within Limits Brake Discs for Wear, Rust, Warping, Damaged/Missing Hardware Brake Lines for Chaffing or Cracking Axle Weldments and Mounting Tabs for Cracks, Corrosion, Elongated Holes Page 5 of 8 Sonex Condition Inspection Checklist Inspection Item S U Notes Wheel Bearings, Remove Old Grease, Repack with Automotive Wheel Bearing Grease Replenish Fluid in Brake Master Cylinder; Bleed as Needed using Dexron VI ATF (Alternate ATF Fluid: Type A, Dexron II/III, Mercon V) Check Tire Pressure; Fill to 40 psi Re-install Wheel Pants and Fairings; Loctite (blue) All Fasteners; Use New MS24693C273 (aka AN507C1032R10) 1032 x 5/8” Flush Stainless Steel Machine Screws (12 Total) and AN525-10R11 Screws (2 Total) Wings: Remove Inspection Plates/Fairings General Inspection of the Exterior/Interior of Wing Popped Rivets/Cracked/Deformed Skin Wingtips for Lose Rivets, Cracked Fiberglass Flap/Aileron Attachment (No Play or Slop) Aileron Bellcrank for Wear, Security Flight Control Hinges/Rod End Bearings/Bellcranks (Check for Binding and Excessive Wear) Corrosion (Internal Skins, Front and Rear Spars) Flight Control Bolts/Pins for Safety and Condition Lube Rod Ends, Hinges and Bushings (LPS1) Pitot/Static Probe for Obstructions, Security, Tubing Connections; AoA Port Rivet for Obstruction, Security, and Tube Connection Empennage: Remove Inspection Plates and Tail Fairing Inspect Vertical Fin and Stabilizer Attach Points (Under Fairing Bolts, Tail Post Bolts, Horizontal Stab Bolts) Inspect Elevator Trim Tab (Cable Wire, Hinge, Attachment Hole, Free Play) Page 6 of 8 Sonex Condition Inspection Checklist Inspection Item S U Notes Inspect Rudder Control Cables (Fraying, Ends, Attachment Bolts) Inspect and Lube Elevator Pushrod Rod End (LPS1) Inspect Fiberglass Tail Tips (Cracks, Scuffs, Security) Inspect Fiberglass Tail Fairing (Cracks, Stripped Screw Holes) Inspect Tail Wheel Pushrod (Cracks, Damaged Rod Ends or Threads) Clean and Lube Tail Wheel Bearings and Pivot Arm Inspect Tail Wheel for Tire Wear, Rotate Orientation in Needed Operational Inspection: Visual Inspection of the Engine/Propeller/Cowling All Inspection Panels and Fairings Secure Proper Fuel In Tanks Idle Rpm/Mixture Check Static RPM (Run-up) Check: Idle RPM____________ WOT RPM_________ Oil Temp ________ Oil Press ________ Logbook Entry and Signoff: Record All Findings, Repairs and/or Work Performed and Sign off Inspection and Maintenance In Aircraft Log Books. “I certify that this aircraft has been inspected on ________ in accordance with the scope and detail of appendix D to part 43, and was found to be in a condition for safe operation. Signed _______________, Repairman # ______________ “ I hereby certify that all requirements in this annual condition inspection report have been met, and I have determined the aircraft to by airworthy. Signature _______________________________________________ Certificate # (A&P or Repairman) . Notes: Page 7 of 8 Sonex Condition Inspection Checklist Inspection Item S U Notes Maintenance Data Oil 20W-50 or 15W-50 Multigrade, (Phillips XC 20W-50, AeroShell 15W-50) W100 Ashless, Dispersant Oil Capacity 3.0 – 3.5 qts Oil Filter Fram Extended Guard XG4967 Napa Gold 1394 Bosch 3311 Purolator L14476 (or PER4476) Royal Purple 10-2840 Baldwin B33 K&N HP-1003 Mobile 1 M1-103 Air Cleaner K&N RU-0630 Coil Gap 0.010” - 0.012” Spark Plugs 12mm NGK D9EA Spark Plug Gap 0.022” - 0.024” Torque Data Prop Bolts AN6 17 ft-lbs (+/- 2) Rocker Cover Cap Screws 1/4" 6 ft-lbs Valve Chamber 1/8 NPT Plug 5 ft-lbs Cylinder Head 5/16” 20 ft-lbs, 24 ft-lbs (new) Intake / Exhaust Cap Screws 1/4" 8 ft-lbs Spark Plugs 11/16” 8-10 ft-lbs Flywheel Bolts 5/16” 32 ft-lbs 3/8” 36 ft-lbs Alternator / Coil Bolts 1/4” 8 ft-lbs Crankcase Cap Screws 1/4" 10 ft-lbs Crankcase Main Studs3/8” 30 ft-lbs 7/16” 35 ft-lbs Oil Drain Plug 1/2” 14 ft-lbs Starter Motor Bolts 1/4” 8 ft-lbs Engine Operational Data Max RPM 3300 rpm (3200 rpm static) Idle RPM 800-1000 rpm CHT Range 250-350º F (396º F Max) EGT Range 1200-1375º F (1450º F Max) Oil Pressure 33-76 psi (40-60 psi cruise) Oil Temp 160-220º F (175-195º F Cruise) Page 8 of 8 Sonex Condition Inspection Checklist