The definition can be found in the CBA 2.53 “Emergency.”
“Beyond the Company's Control” can include: (1) an act of God, (2) a
strike by any other Company employee group, (3) a national emergency,
(4) revocation of the Company's operating certificate(s), (5) unexpected
grounding of the Company's aircraft, or (6) a governmental or commercial
action imposed on the Company which substantially reduces or inhibits the
Company's operation or ability to operate its air fleet, or portion thereof.