Final answer:
The technical order deficiency report that identifies a deficiency affecting safety and the unit mission is called an urgent deficiency report (UDR).
Step-by-step explanation:
The technical order (TO) deficiency report that identifies a deficiency affecting safety and the unit mission is known as an urgent deficiency report (UDR).
An UDR is used when a deficiency in a technical order, such as missing or incorrect information, poses a safety risk or hinders the unit's ability to carry out its mission.
For example, if a technical order for aircraft maintenance does not provide proper guidance on inspecting a critical component, it could endanger the safety of the crew and the aircraft's ability to perform its mission. In such cases, an UDR would be submitted to address the safety and mission-critical deficiency.