Engine Status

What happens when your engine is brought to G&N?
How does it become G&N Certified?

When your engine leaves the G&N Aircraft FAA Certified Repair Station you can be sure that all repair work is produced to factory new fits and tolerances for long-term durability.

Each overhaul is in compliance with all FAA Airworthiness Directives and Manufacturer Service Bulletins and we insist on using genuine original equipment manufacturer replacement parts.

Step 1: (If Aircraft is brought to G&N)

We create a work order for your aircraft. Once the scope of work is discussed work will begin. You will be notified via email, if requested, as your engine completes each stage of the repair.

Step 2: (If Aircraft is brought to G&N)

The engine removed from the aircraft, moved to engine department for overhaul or repair. If the engine is shipped by itself, it is sent to the engine department for disassembly. Prior to disassembly pictures will be taken to verify accessories, fitting location and direction.

Step 3: (If Aircraft is brought to G&N)

Your aircraft will be inspected for any discrepancies. You will be notified if any are found, along with corrective action required and pricing estimate.

Step 4:

A work order for the engine is created. This will show engine model and serial number, along with the work to be accomplished and any special customer instructions. A check list is completed to indicate all parts sent with the engine. At this time a 100% replacement part list is submitted to our parts department.

Step 5:

Prior to engine disassembly a series of pictures will be taken to verify accessories, fitting location and direction and any additional parts that were sent with the engine. The engine is then dismantled and the parts are placed on it’s own cart for cleaning, inspection and rebuilding. Each part is returned to the cart every step of the way.

Step 6:

After the engine disassembly all of the accessories will be moved to the appropriate department (fuel, electrical, etc.) tagged with the work order number so that they may be returned to the engine when it is ready to be assembled. Accessories that are not overhauled in house (turbochargers, prop governors, etc.) will be sent to the appropriate vendor. The engine is cleaned and prepped for the preliminary NDT inspection.

Step 7:

The preliminary NDT Inspection consists of dimensional checks of major components (crankcase and crankshaft). We will also perform a Magnaflux inspection all of the steel components, and a heat and dye penetrant check on all non steel parts. Failing an inspection may require that a part be sent to an outside vendor for repair.

Step 8:

After the preliminary inspection is completed the engine is sent to the full inspection department. Here all remaining parts will be inspected for applicability for the engine, dimension, and a complete additional replacement parts listing will be made. At this point if the engine is being repaired versus overhauled a listing of discrepancies and pricing will be submitted to the customer.

Step 9:

Paint Department- After the engine inspection and rework is completed the engine is sent to our paint department. All of the engines are painted with a water based paint prior to engine assembly to ensure complete coverage on all of the parts.

Step 10:

Build Up Department Once all of the parts have arrived from the OEM, we are ready to assemble the engine. We use a two man approach and various checklists to ensure all safety items are accomplished.

Step 11:

Dynomometer Test Department – After assembly the engine will be thoroughly tested on one of our two water brake dynomometers. Here we insure a leak and trouble free operation of the engine, any required adjustments are made to manufacturers specifications. It will run for three to four hours before we release back to you.

Step 12:

Final Inspection/Work Order Sign – Test run has now been completed and it time for the paperwork. All of the associated paperwork (sign off for overhaul or repair, Airworthiness Directives, and parts list) will now be completed.

Step 13:

Engine Ready for Shipping/Installation/Delivery – The same checklist used upon receiving the engine will be used to verify that we are sending the engine out with everything that came with the engine when received by G&N. If we are delivering or shipping, the engine these arrangements will be made at this time.

Step 14: (If Aircraft is brought to G&N)

Engine Installation – The engine will be reinstalled onto the aircraft.

Step 15: (If Aircraft is brought to G&N)

Test run/flown after installation – The engine is test run on the aircraft on the ground to check for installation issues. If none are found the aircraft is test flown. Any needed adjustments will be made at this time.

Step 16: (If Aircraft is brought to G&N)

Aircraft Final Inspection/work order sign off – Once the aircraft has passed all of its tests the paperwork for it will be completed. Logbook stickers will be generated and supplied to the customer. The aircraft will be washed awaiting pick up or delivery.

Step 17: (If Aircraft is brought to G&N)

Aircraft ready for pick-up/delivery – We can in most cases deliver the aircraft back to you. Arrangements will need to be made for the return of our pilot. As the customer you may elect to pick up the aircraft from us.