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recently, air china (hereinafter referred to as "air china") received its first c919 aircraft, marking the start of a new phase of multi-user operation for china's domestic large aircraft. transinfo has helped air china complete all the work of decoding the c919 model qar (quick access recorder) data, which will soon be put into use.

according to information, transinfo was founded in 2002 and is located at no. 501, building b, no. 27, phase i, zhongguancun software park, no. 8, dongbeiwang west road, haidian district, beijing. it is an enterprise mainly engaged in smart transportation and smart internet of things business. the registered capital of the enterprise is rmb 1.58 billion, and the legal representative is xia shudong.

air china's first c919 made its debut (photo source: air china's official account)

01what is qar decoding?

as a standard aircraft configuration component, qar truly records a large number of operating parameters such as crew operations, aircraft status, engine operation, fuel consumption, etc. only by professionally processing these unreadable raw data and "translating" them into data that can be used by the system can the business applications, analysis and decision-making of airlines be empowered.

for a long time, the qar decoding field has been plagued by problems such as closed foreign products, no support for secondary development, closed decoding results, and a focus on individual application scenarios, and low efficiency, poor scalability, and inflexibility of domestic products. to achieve complete qar decoding, it is often necessary to purchase multiple decoding software, resulting in inconsistent data standards and forming data barriers. the duplication of decoding systems also brings huge system maintenance and management costs.

what are the difficulties in qar decoding of 02c919?

c919 is a trunk civil aircraft independently developed by china, designed for medium and short-haul routes. it is similar in positioning to boeing 737 and airbus a320, but compared with them, it has more than 4,000 parameters. the same type of parameters has multiple similar names, and parameters often occupy two bits for storage. not only does it take longer to parse the data, but it also has higher technical requirements for data smoothing and stage division.

yuanhangtong, a subsidiary of transinfo, owns the only flight data decoding platform with independent intellectual property rights in china. by continuously conquering the qar decoding of new aircraft models, it has gradually formed a full-configuration qar decoding capability covering boeing, airbus and all domestic aircraft models. in this cooperation with air china, transinfo configured parameters according to the c919 configuration manual provided by the customer, completed a series of professional tests such as the accuracy of parameter values, business data analysis, and domestic apm analysis, and successfully built a c919 passenger aircraft flight information database, providing comprehensive, complete and accurate data support for air china's future optimization of flight plans, monitoring of aircraft health status, and improvement of pilot training and other refined management.

03what are the characteristics of qianfang flight data decoding platform?

qianfang's new generation of big data decoding platform realizes data processing for all aircraft models, all parameters, all links, all time series, and all events, and is at the industry-leading level in terms of computing efficiency, scalability, data cleaning, and ease of use. the platform innovatively adopts big data technologies such as hadoop and spark to realize full-parameter decoding, storage and analysis of qar data, and supports a variety of data smoothing algorithms. on the premise of ensuring full-parameter decoding and consistent accuracy, the decoding platform has greatly improved its efficiency compared with foreign products, and the decoding rate far exceeds 1000+ flights/minute. it has functions such as frame splicing and automatic completion of lost frames. it not only supports disc and wqar file decoding, but also supports real-time decoding, automatic and comprehensive new decoding, no delay, and supports real-time ground monitoring of aircraft operations.

04what are the applications of qianfang flight data decoding platform?

qianfang flight data decoding platform can help airlines realize a series of qar follow-up applications such as flight operation risk control, fuel saving management, flight quality analysis, operation quality analysis, preventive maintenance, etc. taking qianfang flight quality analysis product as an example, after the flight lands, it can quickly restore the real flight process based on qar data, identify the flight operation problems of the crew, assist in formulating targeted training plans, improve the pilot's operation ability and level, and deeply explore the root causes of unsafe incidents, predict safety trends in the future, and realize three-dimensional operation monitoring in combination with air-ground data interconnection to assist airlines in emergency management.

at present, qianfang technology's smart aviation-related products have been adopted by more than 30 airlines including air china, china eastern airlines, hainan airlines, shenzhen airlines, shandong airlines, and juneyao airlines, helping to improve safety levels, improve operational efficiency, reduce corporate costs, and support airlines to achieve comprehensive digital transformation.