Double Zero, a Spectre was requested during mission planning, but was denied:
"A lack of political support for the Task Force Ranger mission, reflected in denial or removal of military support assets that would have aided the force, such as
M1 Abrams tanks ,
AC-130 Spectre gunships, and
M2 Bradley APCs."
Battle of Mogadishu (1993) - Wikipedia, the free encyclopedia
As OA mentioned, I'm not sure how much more help a carrier would have been as they were hardly short of air and ground assets - just not allowed to use them during planning.
BTW, the film 'Black Hawk Down' is not bad by Hollywood standards as Ridley Scott (the British director who also did Bladerunner and Alien) tried not to stray too far from what actually happened.