I've wondered for years about one-way reliability. You know what I mean: all defects occur on the inbound sector, usually the last of the day.
That dreaded phrase, uttered by a tired pilot talking to OPS: "Is this aircraft down for the night?" Loud groans from the Line Maintenance office.
On a related matter, I've audited several GA commercial operations. The audit of their technical logs often reveal no defects for weeks.
