New for 2013 is a breakdown of the rate in terms of the operational safety component, covering accidents involving damage to aircraft and the medical/injury component pertaining to accidents with serious or fatal injuries to persons but little or no damage to the aircraft itself.ew for 2013 is a breakdown of the rate in terms of the operational safety component, covering accidents involving damage to aircraft and the medical/injury component pertaining to accidents with serious or fatal injuries to persons but little or no damage to the aircraft itself.
In general, a lockbox is a post-office box (PO box) that is accessible by a bank. A company may set up a lockbox service with its bank for receiving customers' payments. The company's customers send their payments to the PO box. Then the bank collects and processes these payments directly and deposits them to the company's account.
A black box is any device whose workings are not understood by or accessible to its user. According to Edward Tenner, writing in The Washington Post, the first black box was a gun sight carried on World War II Flying Fortresses, with hidden components that corrected for environmental variables, such as wind speed.