main menu

Pages

when Should One Activate the Secondary Seal of an Airbus A320 Main Landing Gear (MLG) Strut ?

 when Should One Activate the Secondary Seal of an Airbus A320 Main Landing Gear (MLG) Strut?

  • Aircraft Leakages can be Tricky & Costly at times When Leakage is Linked to the Shock Strut Hydraulic Fluid, it’s a headache for Maintenance Control Centre and higher management.
  • How does An Engineer/Mechanic Confirm the Leakage is Error-free and not Affecting the Primary seal of the MLG Strut?
  • Breathe, Don’t Rush to a Conclusion at First The sight of MLG Hydraulic Fluid (MIL-H-5606) Leakage, the experience can help.
  • Follow the Troubleshooting Steps Chronologically as the Leakage can be dubious many times.
  • Sometimes, the Red color of residual Grease can resemble a Hydraulic leak on the Sliding Tube.


  •  Activate the Secondary Seal Only when you encounter the Below Conditions.
  • Only “Major leak” from “Static seals interface” (the interface between the lower bearing gland housing & the main Fitting).
  • Any “Confirmed Leak” from the ‘Dynamic seals interface’ (the interface between the sliding tube & the lower bearing gland housing).
  • Static seal Interface minor leakage is acceptable, Only Go for a “Leak Rate Confirmation Check” based on the number of leaked drops per certain time.

reactions :

Comments