GB/T 29076-2021Execution requirements of quality problem closed loop for aerospace product (English PDF)

3.1 Quality problem zero

For quality problems that have occurred, analyze the causes and mechanisms of technology and management, and take corrective and preventive measures to fundamentally

Eliminate problems and avoid recurring activities.

Note 1.The zeroing of quality problems is divided into technical zeroing and management zeroing, sometimes referred to as "double five points" zeroing.

Note 2.Quality problems include malfunctions, defects, accidents and other undesirable situations.

3.2 Technologyclosedloop

In response to the quality problems that occur, technically follow the five requirements of "accurate positioning, clear mechanism, recurring problems, effective measures, and inferences from one another".

Seek to implement item by item, and form the activity of technical zeroing report, related technical documents and certification materials.

3.3 Accurate location

Determine the exact location where the quality problem occurred.

Note. Accurate positioning is to find out which link, which product, which component, which part, which electronic component or which component the problem occurs in, and confirm

Determine the abnormal status and basic reasons of the lowest-level faulty products that occur in the quality problems.

3.4

The mechanism is clear clearlocation

Determine the root cause of quality problems by means of analysis, calculation or experiment.

Note. A clear mechanism is the key to ensure that the quality problem is completely zeroed out, sort out the causal relationship between the problem and the cause, support and prove the correctness of the cause of the problem,

Provide a basis for formulating measures.

3.5 Problemrepetition

Through experiments or other verification methods, the quality problems that have occurred are reproduced, and the accuracy of the positioning and the correctness of the mechanism analysis are confirmed. […]