Work process: troubleshooting on an aircraft system
A systematic path from symptom to documented solution
Use this order when a system is not working as it should. It saves parts and time and ensures the solution can be verified.
1. Understand the symptom
- 01Describe precisely what happens and when
- 02Look up in the documentation what the symptom could be caused by
- 03Note the starting point before you change anything
2. Narrow down the fault
- 01Understand how the system fits together
- 02Test according to procedure to rule out possible causes
- 03Don't change parts blindly — find the cause first
3. Remedy
- 01Use approved parts and prescribed tools and torques
- 02Follow the procedure step by step
- 03Note which parts are used
4. Check and document
- 01Test that the system now works as it should
- 02Count tools and parts so nothing is forgotten
- 03Write down what has been done and have it checked/released