Cyclic, Back in the day when Eastern Airlines flew NYC-MIA....the FAA decided in its infinite wisdom that 727’s being three engined were statistically immune from a need to ditch on that route.
About three weeks later a bumbled fingered FE managed to flameout all three engines.
The crew got them all running again before any one got their feet wet.
The FAA then ordered the re-installation of rafts and jackets for those flights having approved their removal just weeks before!