Dual Inspection

When maintenance performed on your airplane disturbes engine or flight controls a Dual Inspection has to be performed. It includes things like a carburetor change, propellor governor change, elevator change, adjusting cable tension, trim indicator, trim system work and so on. CARs STD 571 - Types of Work (d) The purpose of the Dual Inspection or Independent Check is to have at least 2 sets of eyes verify the following: That the system has been inspected for correct assembly and correct locking of any parts disturbed by the maintenance performed, including an operational check for proper sense and range of motion of the engine or flight controls has been accomplished, by at least two persons, and the technical record contains the signatures of both persons. Technical Tips I’m a pilot, not a mechanic. I can’t sign a dual inspection? AEROSISU enjoys teaching the pilot owner about their airplane. Yes you are able to sign when we teach you about safety techniques and correct locking procedures. We prefer to show you the system so you can see how safe the controls are. We will go with you on the next flight! We like flying also! Airworthiness Notice - C010 Aviation Safety Letter TP-185

Repairs and Modifications

Repairs and Modifications have standards to follow. Acceptable Data (Manufacturer Manuals / Transport Canada Advisory Docs / AC4313 Manual, Approved Data (Type Certificate / STC / TSO, etc.) Specified Data (Drawings & Methods of AWDs / Manufacturer-TC Holder Mod- Engineering Orders, Service Bulletins-SB, Structural Repair Manual-SRM, Major Repair - means a repair to an aeronautical product in respect of which a type certificate has been issued, that causes the aeronautical product to deviate from the type design defined by the type certificate, where the deviation from the type design has other than a negligible effect on the weight and centre-of-gravity limits, structural strength, performance, power plant operation, flight characteristics or other qualities affecting the aeronautical product's airworthiness or environmental characteristics. Major Modification - means an alteration to the type design of an aeronautical product in respect of which a type certificate has been issued that has other than a negligible effect on the weight and centre-of-gravity limits, structural strength, performance, power plant operation, flight characteristics or other qualities affecting its airworthiness or environmental characteristics; CARs STD 571.06 Major Repairs and Modifications use Approved or Specified Data . A Report is filed with Transport Canada following the work. CARs STD 571-Appendix L-Major Repair Modification Form All other Repairs and Modifications use Acceptable Data. Technical Tips How do I know if it’s a major or not? CARs STD 571-Appendix A-Criteria for Classification

WHMIS / MSDS

Workplace Hazardous Material Information System. Did you ever stop and think about this…Products I use can be harmful? How do these chemicals affect me? Simple commercial products have hazardous properties. Super Clean, Acetone, Varsol, AVGas Material Safety Data Sheets (MSDS) are prepared by the manufacturer to help you understand their product. FREE Online WHMIS Training Technical Tips Can I use “Windex” to clean my airplane windows? No. Do not even try it! Most household window cleaners contain Amonia, which attacks Acrylic Plastic (Airplane window material). You may get away with it quickly, but regular use will cause crazing and fogging of your airplane windows. We recommend dish soap and water or Acrylic Cleaner (eg.-PRIST) to clean your windows. Where can I find MSDS information? Many MSDS information sheets can be found online. Other ways are to contact the supplier you purchased the product from or contact the product manufacturer.