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**Process of Daily/Transit Checks in Line Maintenance:**

Daily and transit checks are crucial routine inspections conducted on aircraft to ensure their airworthiness and safety. These checks are typically carried out before the aircraft's first flight of the day (daily checks) and during layovers between flights (transit checks). Here's a detailed outline of the process for these inspections:

**1. Timing:**

- **Daily Checks:** These are performed before the aircraft's first flight of the day. Technicians conduct a comprehensive inspection to ensure the aircraft's readiness for the day's operations.

- **Transit Checks:** Transit checks occur during layovers between flights. They are generally quicker and focus on verifying the aircraft's readiness for its next flight.

**2. Checklists:**

- **Standard Checklists:** Maintenance technicians follow detailed checklists provided by the aircraft's manufacturer, the airline, or aviation authorities. These checklists provide a systematic and comprehensive guide for the inspection process.

**3. Visual Inspection:**

- **Exterior Inspection:** Technicians conduct a thorough visual inspection of the aircraft's exterior. This includes examining the fuselage, wings, tail, landing gear, and control surfaces for any signs of damage, wear, or anomalies. They look for scratches, dents, cracks, or loose or missing parts.

- **Interior Inspection:** If applicable, they also inspect the aircraft's interior for issues such as damaged seats, loose panels, and any visible signs of damage or wear.

**4. Functional Checks:**

- Technicians perform functional tests on various aircraft systems, including but not limited to:
  - **Electrical Systems:** Verification of lighting systems, communication equipment, and power distribution.
  - **Hydraulic Systems:** Testing of hydraulic pumps, actuators, and fluid levels.
  - **Pneumatic Systems:** Verification of air pressure and functionality of pneumatic components.
  - **Avionics Systems:** Checks on navigation and communication systems, including radios, transponders, and displays.

**5. Fluid Checks:**

- Technicians verify fluid levels, including but not limited to:
  - **Engine Oil:** Checking engine oil levels and ensuring there are no visible leaks.
  - **Hydraulic Fluids:** Inspecting hydraulic fluid levels, condition, and for any signs of leaks.
  - **Fuel:** Confirming the aircraft has an adequate supply of fuel for the upcoming flight.
  - **Water and Other Fluids:** If applicable, checking the levels and condition of potable water, lavatory fluids, and other fluids used during flight.

**6. Documentation:**

- Findings from both daily and transit checks are documented in maintenance logbooks, records, or digital reporting systems.
- Technicians record any discrepancies, issues, or maintenance actions taken during the inspection.
- Documentation is crucial for traceability, regulatory compliance, and future reference.

**7. Maintenance Action:** 

- If any discrepancies or issues are identified during the inspection, technicians take appropriate maintenance actions. This may include repairing, replacing, or adjusting components or systems to ensure the aircraft's airworthiness.

The goal of daily and transit checks is to verify the aircraft's operational readiness, identify any issues that may affect safety, and address them promptly to maintain the aircraft's airworthiness. These routine inspections are essential for the overall safety and reliability of aircraft in commercial aviation.