Final answer:
To operate with an inoperative Flight Data Recorder (FDR) or Cockpit Voice Recorder (CVR), aviation regulations such as those from the FAA must be followed. This often involves referring to the airline's Minimum Equipment List (MEL) for specific conditions and repair timelines, and flying with such inoperative equipment can only be done under strictly regulated conditions.
Step-by-step explanation:
Rules for Operating with Inoperative FDR and CVR
The operation of an aircraft with an inoperative Flight Data Recorder (FDR) or Cockpit Voice Recorder (CVR) is governed by specific aviation regulations, which vary depending on the jurisdiction. Generally, these devices are critical to aircraft operation and cannot be deferred indefinitely. An aircraft may be allowed to operate under specific circumstances without a functional FDR or CVR, but this is typically only for a limited time and under strict conditions specified by the aviation authority, such as the Federal Aviation Administration (FAA) in the United States.
For an inoperative FDR, the operator may need to follow an approved maintenance program which includes a minimum equipment list (MEL) that allows the aircraft to operate for a certain period without the device fully operational. This usually requires specific maintenance actions and perhaps restrictions in operations, such as not flying into certain airspace.
Regarding an inoperative CVR, similar rules apply. The airline or operator must consult their MEL to determine the conditions under which the aircraft can continue to operate. The MEL might specify procedures for recording flight information alternatively, requirements for repair timelines, and possible limitations on the type of operations the aircraft can perform without a functional CVR.
In both cases, it's essential for the airlines to comply with all the operating conditions and repair requirements stated in the MEL and by the aviation authority to ensure safety and legality of flight operations. It is also important to note that these rules may differ for international flights and under the regulations of different countries. Consulting the relevant aviation regulatory body is crucial for the correct and legal operation of an aircraft with an inoperative FDR or CVR.