Might I politely draw the attention of our colonial chums to Para 1c (1)(a) of Section A-2 of the DoD Flight Information Handbook?
c. DISTRESS or URGENCY CALL and MESSAGE
(1) Transmit as many of the following elements as necessary:
(a) *Distress, MAYDAY (3 times) or **Urgency, PAN PAN (3 times).
Anyhoo, all aircrew survived what could well have been a catastrophic event - some sound flying skills from that Marine aviator who saved his C-130 crew with multiple engine and system failures.