ɪnˈɪʃəli sˈɜːvd baɪ ˈɛɹbʌs ˌeɪ θɹˈiːhˈʌndɹɪd nˈaɪntiːn ˈɛɹkɹæft, ɪt hɐz sˈɪns bˌɪn ʌpɡɹˈeɪdᵻd tə ðɪ ˌeɪ θɹˈiːhˈʌndɹɪd twˈɛnti, ˌeɪ θɹˈiːhˈʌndɹɪd twˈɛnti wˈʌn, ænd ˌeɪ θɹˈiːhˈʌndɹɪd θˈɜːɾi ˈɛɹkɹæft.
Initially served by Airbus A319 aircraft, it has since been upgraded to the A320, A321, and A330 aircraft.