The Sierra Leone Civil Aviation Authority (SLCAA) was established by an Act of Parliament (the Civil Aviation Act, 2008) in April 2008 to provide for an independent professional oversight of international and domestic air transport and cargo services in compliance with international agreements and obligations relating to Civil Aviation.

The establishment of the SLCAA came about after the mandatory Universal Safety Oversight Audit Programme(USOAP) conducted by the International Civil Aviation Organization (ICAO) in May 8 – 12, 2006 and discovered that Sierra Leone was completely deficient in all eight critical elements that were audited.