Airworthiness Certification and Qualification

Airworthiness Definition

In general, when we say a civil aircraft is airworthy, or the civil aircraft maintains its airworthiness, it literally means that the aircraft is "safe" or "safe of flight." 

Airworthiness refers to inherent the overall performance and operational characteristics of a civil aircraft (including its components and subsystems) maintains safety and physical integrity under expected operating environment and usage restrictions. This characteristic requires that the civil aircraft always conforms to its type design certification and maintains usable status. 

Including aircraft manufacturers conducts development, design and testing to qualify the components, subsystems, and materials; the manufacturing process was strictly controlled to keep the products quality; airlines conduct inspection and maintenance of aircraft strictly in accordance with the standards, until aircrafts scrapped or withdrawn from operation. The design party plays a key role in the airworthiness process, because all subsequent work will be carried on based on the airworthiness establishment.

What we have achieved on airworthiness

As a supplier of conveyance system, we conduct design and testing on conveyance system and  components. We develop qualification plan, conduct qualification testing,  compile qualification test reports  and send to customer and CAAC for reviewing and approval.

We support the manufacturing conformity inspection of testing article during airworthiness certification process, including test article design drawings, manufacturing specifications, other related technical document, production process inspection to make sure the produced test article in accordance with the relevant procedures and requirements in documents.

We support engineering representative of CAAC to inspect the conformity, correctness, and completeness of the engineering technical data that including test procedure, test process, test report, and product similarity/analysis report, etc.

Qualification test of conveyance system

In general, the qualification test of conveyance system follows applicable sections in RTCA DO-160(Environmental Conditions and Test Procedures for Airborne Equipment), industry specifications and specific requirements origin from aircraft level. Typically there were four types: pressure test, environmental test, vibration test and fatigue test.

Pressure test：

Vibration test:
Operation shock and crash safety
Robust vibration
High level short duration vibration
Windmilling and Acceleration



Fatigue test
Pressure cycling;
Bending fatigue test;


Environment test：
Temperature(variation)
Humidity
Fluid susceptibility
Salt fog
Fungus Resistance
Sand and Dust
Waterproof
Icing

Airworthiness witness support for CAAC, including on-site and remote witness

Sub-system test

Other airworthiness document:

In addition to test-related documents, airworthiness support documents also include design specifications, drawings, material and process documents, FEA and analysis reports, etc.