[Milsurplus] YG/ZB in Bermuda Triangle?

[Unserviceable but Repairable]

A lot can go wrong with the system.  Wrong freq.s, yesterday's code
card, mistaking a L for a F, etc.

Wonder if this's a stumble on the reason why the five Grumman Avenger's
in training flt 19 vanished off FL in '45.

Have heard there were just two ZB planes per squadron.  Same flyer
vet sed his "sampan missions" were solo & had a ASB & ZB aboard.