What does concessional code 0, 1, and 2 mean?

• A. 0 - OEM standard
• B. 1 - FAA/EASA repair
• C. 2 - OEM/customer special repair
• D. 0 - OEM standard; 1 - FAA/EASA repair; 2 - OEM/customer special repair

Answer: (D)

Concessional codes indicate how a repair is approved and what kind of data governs it. One category represents the standard repairs defined by the original equipment manufacturer, the baseline method that doesn’t require extra regulatory approval beyond normal maintenance data. Another category covers repairs that have been reviewed and approved by aviation authorities such as FAA or EASA, meaning the repair meets specific airworthiness requirements. The third category accounts for special repairs that are authorized either by the OEM or in agreement with the customer, often involving engineering justification and defined limitations beyond standard procedures. The option that describes all three categories—OEM standard, FAA/EASA repair, and OEM/customer special repair—captures the full meaning of these concessional codes. These codes help teams quickly understand what approvals and data apply to a given repair.