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Shockload Inspection

Following a propeller strike with damage to the propeller, it is imperative that checks are carried out to ensure that engine internal component damage has not occurred. If the engine is run after a propeller strike without these checks having been carried out, further catastrophic damage can destroy the engine, sometimes several hours later.

Shockload Inspection

The following checks are made during a shock load check:

  • 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

When a slipper clutch is fitted to the engine the crankshaft and flywheel are protected. However, damage may still occur within the gearbox and the first 5 checks in the list are necessary.

Lycoming

Series Supported:

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

The engine spectrum includes:

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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