Is a 45 degree flaring tool suitable for use with aircraft tubing?

• A. True
• B. False
• C. Only for maintenance purposes
• D. Only for non-metallic tubing

Answer: (B)

A 45 degree flaring tool is not suitable for use with aircraft tubing because aircraft tubing typically requires a 37 degree flaring angle for proper sealing and functionality. The 37 degree flare provides a more precise fit when connecting with AN (Aerospace Standard) fittings, ensuring a reliable, leak-free connection that is critical for the safety and efficiency of aircraft systems. Using a 45 degree flare would not produce the necessary seal and could lead to failures in the connection, compromising the integrity of the system. Thus, the assertion that a 45 degree flaring tool is appropriate for aircraft tubing is incorrect.