### Clue: Single operator supported by staff and airline in aim (3-3,4)
### Answer: ONE-MAN BAND 
 ### Explanation: Definition: Single operator
 ON(supported by something underneath) + {[MAN(to staff/to put employees into an organisation, say) **plus**(and) BA(abbrev. for British Airways)] **contained in**(in) END(an aim/an objective)}.
…or the gender-neutral one-person band: