+1 (559)-686-1794

Johnston Aircraft Service
Johnston Aircraft Service

+1 (559)-686-1794

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  • Piston Engines
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  • EMCO Wheaton

Piston Engine Shop

Overhaul

Non-Destructive Testing (NDT) services

Engine Test Cell

 We perform complete engine overhauls in-house using factory-approved procedures and quality components. Our services include new and overhauled cylinders, magnetos, carburetors, fuel system components, ignition systems, and a full range of engine accessories. Every overhaul is completed with meticulous attention to detail to ensure reliability, performance, and long service life. 

Engine Test Cell

Non-Destructive Testing (NDT) services

Engine Test Cell

 To verify engine performance before it returns to service, our facility features a fully equipped on-site engine test cell. Each engine is properly run, inspected, and evaluated to confirm oil pressure, temperatures, power output, and overall operational performance prior to installation. 

Non-Destructive Testing (NDT) services

Non-Destructive Testing (NDT) services

Non-Destructive Testing (NDT) services

 Our shop also offers in-house Non-Destructive Testing (NDT) services, including magnetic particle inspection (Magnaflux), allowing us to identify cracks and defects in critical ferrous engine components without causing damage. Having these capabilities under one roof helps reduce downtime while maintaining the highest standards of quality and safety. 

Engine Models Serviced

Lycoming

  • O-320 Series
  • O-360 Series
  • VO-435 Series
  • O-540 Series
  • TIO/LTIO-540 Series
  • IO/LIO-320 Series
  • IO/LIO-360 Series (Bendix Fuel Inj. Only)
  • VO-540 Series
  • IO-540 Series (Bendix Fuel Inj. Only)
  • IO-720 Series

Continental

  • O-200 Series
  • IO-360
  • O-470 K,L,R,S,U
  • IO-470 Series
  • TSIO-520 Series
  • O-300
  • TSIO/LTSIO-360 (All but MB)
  • E-185,205,225
  • IO-520 Series
  • IO-550 Series

Copyright © 2026 Johnston Aircraft Service - All Rights Reserved.

  • Agricultural Aviation
  • General Aviation
  • Piston Engines
  • Parts
  • EMCO Wheaton

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