Roll monitoring unit BKK-18

Roll monitoring unit BKK-18 compares roll signals from different sources and warns the crew of a discrepancy. As a safety-related unit it should come with a bench test record, its passport and remaining life.

Part number

BKK-18

Condition

AR

AR refers to parts or units that were removed from an aircraft and are now listed for sale. These could state a reason or occasionally be unrepairable after the product’s life.

FN

FN indicates the condition of a product that is brand new from the factory. For it to be FN, the product should not be more than two years old since manufacturing.

IN

IN code is used for parts that have been inspected for basic requirements along with different checklists of maintenance inspection if stated alongside.

MD

MD code is used to define the condition of a product or unit that has been modified or altered in minor or major ways. In some cases, the details of the modification might be stated.

NE

NE refers to a piece of new equipment or part that has no operation time and zero working cycles on it. A resold item can also have an NE tag as long as it was never used. The manufacturing date on NE items is not considered to assign this code, and only the operation of the new part is indicated.

NR

NR is also used for non-repairable items or units. While these could be sold in perfect working condition, NR goods are not repairable after any malfunctions are detected. In some cases, these might be AR products as well.

NS

NS code is for new parts that were sold from one or more sellers but still have no operation time or cycles. These are parts that might go through the channel of sales from airlines to distributors and are then given the tag of New Surplus.

OH

OH condition refers to the possible overhauling of the product or equipment. This could involve completely or partially disassembling the product and restoring it to an optimum/maximum level of functionality.

RP

RP refers to a product that has been repaired and might need some more work for optimum functionality. These parts are commonly used for functional tests compliance to use repaired parts and bring the unit to a serviceable stage.

SV

SV indicated a serviceable part. This means that the part is repaired and passed the functional tests. The exact specifications of the condition might also be stated at times.

Category

Flight instrumentation systems (avionics)