Spare Parts and Condition Codes

Condition codes are probably the first and most important information a Buyer checks when getting a quote from a Supplier.

These codes, or abbreviations, give immediate evidence of the airworthiness status of an item, since to a specific condition code should apply also a specific set of documents tracing back to OEM or to a Part145 where the parts has been repaired, removed in serviceable condition or overhauled due to time limit.

Condition Codes are commonly used, for example, on online selling platforms, quotes and purchase orders.

We will now go through each of the condition codes, giving a short description of their meanings and specifying the proper applicable documents.

NE - NEW: New, unused (zero hours or cycles, when applicable) item manufactured in conformity with approved data; this is usually accompanied by the Manufacturer certificate of conformity or an Authorized Release Certificate.


NS - NEW SURPLUS: Check out this post “New Surplus VS Certifications: Certificate of Conformity and ATA106”.


IN - INSPECTED: This refers to a component or material visually or technically inspected and released by a certified repair station; this condition implies the issuance of an Authorized Release Certificate.


TST - TESTED: This refers to a component or material tested by a certified repair station under specific OEM procedures and found compliant with approved manufacturing data and tolerances; this conditions implies the issuance of an Authorized Release Certificate and a Shop/Test Report.

RB - REBUILT/REFURBISHED: Applies to a defective or removed component, rebuilt to original OEM specifications under PMA (Parts Manufacturer Approval) by a certified repair station; this conditions implies the issuance of an Authorized Release Certificate.


SV - SERVICEABLE: This is a general code, as it means everything and nothing; any item compliant with OEM specifications and tolerances is considered serviceable, so the final verdict on the real conditions of a serviceable item is given by the Authorized Release Certificate.


MO - MODIFIED: Common for Avionics and Instruments, this applies to equipments modified to improve their function or performance, always in accordance with OEM approved data; this conditions implies the issuance of an Authorized Release Certificate and a Shop/Test Report.


RD - REPAIRED: Applies to a defective component, repaired by a certified repair station under OEM specifications and procedures; this conditions implies the issuance of an Authorized Release Certificate and a Shop/Test Report.


AR - AS REMOVED: A component removed from an Aircraft or higher assembly due to defects or convenience; these parts are not certified for installation and are sold without evaluation or warranty on repairability and are not accompanied by an Authorized Release Certificate. The only document required is the Red Unserviceable Tag compiled with trace to Aircraft and unit squawk.


BER - BEYOND ECONOMICAL REPAIR: A component removed from an Aircraft or higher assembly due to defects; after evaluation by a certified repair station, a part is deemed BER when the estimated repair cost is 75% or more than the cost to obtain the same unit in SV conditions. Parts in this conditions are not accompanied by an Authorized Release Certificate but must have a Shop/Test Report.


BPR - BEYOND PHYSICAL REPAIR: A component that will not be returned to service due to excessive damage or obsolescence; parts in this conditions are not accompanied by an Authorized Release Certificate but must have a Shop/Test Report.



If you need a quick reminder for above codes, download our free SquareCard today!


Horix Aerospace: Easy, Trusted Process.

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