The first flight after maintenance __________________________ Civil Air Patrol The “Test” Flight www.squadron188.org The first flight after maintenance __________________________

The Risk “Arguably, among the most challenging and potentially hazardous missions a pilot undertakes are post-maintenance test flights”, Richard N. Aarons | Business & Commercial Aviation

Regulations What’s the rule? . § 91.407 Operation after maintenance, preventive maintenance, rebuilding, or alteration. (a) No person may operate any aircraft that has undergone maintenance, preventive maintenance, rebuilding, or alteration unless - (1) It has been approved for return to service by a person authorized under § 43.7 of this chapter; and (2) The maintenance record entry required by § 43.9 or § 43.11, as applicable, of this chapter has been made. .

Know what work was done Annual/100hr inspection Cowling removed All panels and inspection plates removed All seats removed Oil changed Spark plugs removed and cleaned Timing checked and adjusted Wheel bearings repacked Prop spinner removed Check discrepancies in WMIRS

Aircraft during inspection

Check the paperwork Logbook Entries (14 CFR 43.9, or 43.11) Ensure all work performed is logged in the appropriate logbook (airframe, engine, propeller, avionics). Weight & Balance If any equipment was removed or installed, ensure an updated weight & balance is provided. Form 337 (14 CFR Appendix B to Part 43) If any minor or major repairs or modifications were made ensure a from 337 was provided and submitted to the FAA

The Preflight Inspection Follow the checklist! Pay extra close attention to areas that were worked on. Ensure seats and seat belts are properly installed. All inspection covers installed and secure. Cowling and other removable panels secure. Flight controls free and CORRECT!

The “Test” flight Preform a comprehensive run-up. Never at night or in IFR conditions. Stay close to the airport if possible. Avoid mountainous terrain and large bodies of water. Depart from longest runway.

Post flight inspection After the “Test” flight perform a post flight inspection Loose parts Oil leaks, etc…

Real world occurrences Aileron cables rigged in reverse. Rudder control cable hooked under bracket. Defrost hose disconnected. Incorrect timing. Wrench left in engine compartment. Pitot heat wiring mixed up with stall warning.

References https://www.planeandpilotmag.com/article/the-post-maintenance-check-flight AC 20-106 14 CFR Part 43 14 CFR Part 91 http://aviationweek.com/business-aviation/two-chances-lost-pilot-and-mechanic-both-miss-aileron-hook-error

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