FAA ethics

Suppose that a jet mechanic working for a major airline - we'll call the airline "AirXYZ" - finds a rather serious instrument wiring problem. The mechanic alerts management that the wiring problem is serious enough that it would cause the Federal Aviation Administration (FAA) to ground the entire fleet of AirXYZ.    

Using two ethical approaches describe the ethics of this situation in the context of the benefits - and the costs - to AirXYZ of choosing to notify the FAA and consequently, choosing to voluntarily ground its fleet of planes. 

Which of the two theories you’ve chosen above do you believe is most informative relative to how AirXYZ should respond?