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MRO Diagnostics

SHOCKLOAD INSPECTION

CRITICAL
EVALUATION

Following a propeller strike resulting in damage to the propeller, it is absolutely imperative that rigorous diagnostic checks are executed to ensure that internal engine component damage has not occurred.

Warning: If an engine is operated after a propeller strike without these certified checks having been carried out, further catastrophic failure can destroy the engine entirely—often manifesting several hours post-incident.

Engine Evaluation Process

MANDATORY SHOCKLOAD PROTOCOL

  • Propeller shaft, hub and gears NDT tested for cracks and run out
  • Gearbox casing in testing for cracks around the main bearing
  • Propeller shaft bearings are replaced
  • Crankshaft PTO end journal is tested for run out
  • Crankshaft magneto flywheel end journal is tested for run out
  • Crankshaft phasing checks are carried out
  • Woodruff key is checked for distortion and cracks
  • Crankshaft woodruff keyway is checked for cracks
  • Magneto flywheel is checked for cracks around the hub
  • Slipper clutch is checked for correct slipping torque
  • All bearings journals replacement and testing
  • Crankshaft and camshaft NDT testing and alignment check
  • Magneto overhaul execution
ENGINEERING NOTE: When a slipper clutch is fitted to the engine, the crankshaft and flywheel are generally protected. However, significant damage may still occur within the gearbox architecture, making the first five (5) checks in this protocol absolutely necessary.

SUPPORTED SERIES

  • O-235 series
  • O-320 series
  • O-360 / IO-360 series
  • IO/TIO-540 series
  • All Lycoming Aerobatic engines

ENGINE SPECTRUM DATABASE

O-235-L2C
O-320-B2C
O-320-D2A
O-320-D2G
O-320-D2J
O-320-D3G
O-320-E2A
O-320-E2D (150hp)
O-320-E2D (160hp)
O-320-E3D
O-320-H2AD
IO-320-B1A
O-360-A1H6
LO-360-A1H6
O-360-A1G6D
LO-360-A1G6D
O-360-A1B6
O-360-A4K
O-360-A4M
O-360-E1A6D
LO-360- E1A6D
IO-360-L2A
IO-360-M1A
IO-360-C1E6
LIO-360-C1E6
HIO-360-D1A
HIO-360-E1AD
O-540-J3C5D
IO-540-K1B5
TIO-540-A2C
TIO-540-AE2A
TIO-540-AJ1A
TIO-540-C1A
TIO-540-F2BD
LTIO-540-F2BD
TIO-540-J2BD
LTIO-540-J2BD
IO-580-A1A
IO-580-B1A
AEIO-580-B1A

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