Are there any correctives or countermeasures against the rare irony, that objects essential to a flight accident (eg recovered flight data recorder and cockpit voice recorders) are damaged or destroyed on a subsequent flight carrying them? The worst case is if this freight flight crashes.
Context: As in many other Air Crash Investigation episodes, Season 14 Episode 4 (available on Youtube) concerns Copa Airlines Flight 201. Due to a lack of facilities in Panama or Colombia, the recovered FDR and CVR and other parts (including the cockpit instruments) had to be transported to the NTSB's labs in Washington, DC, USA. I presume that for want of expediency, they were freighted by air?