Aircraft Performance - ToDc Quality FAQs

FAQSafety and quality are fundamental drivers in Navtech’s solutions and support. This is especially important in the field of Aircraft Performance, where detail and accuracy have a direct impact on the safety of our customers’ operations and the individuals who use their services.

Recently, Navtech’s Aircraft Performance production manager, Geneth Daley, answered some frequently asked questions regarding Quality and our Aircraft Performance product, ToDc.

Q:    From where is the performance information sourced?
A:    The performance applications are based on the manufacturer’s SCAP data. The customer can also supply additional tables and/or operational data and corrections to be implemented. Airport obstacle data is compiled and referenced according defined output standards.

Q:    To which authority standard is the performance information referenced?
A:    The performance data used in the applications are based on the certification of the specific individual aircraft operated by the customer, e.g., if the customer supplies a JAA approved SCAP the data will be referenced accordingly. The airport obstacle database is based on FAA or JAA requirements.

Q:    Who is responsible for supplying the aircraft performance information?
A:    The customer supplies the manufacturer SCAP data and all other data required for the system (e.g. AFM tables, operational data, etc).

Q:    Is there a process to ensure the information is correctly loaded onto the systems used for calculation?
A:    Test procedures are a vital part of the production process. ISO 9001:2000 processes are implemented in all areas of production and test procedures consisting of batch calculations, random checks, reasonability checks, etc., are performed and documented when releasing the performance applications. Airport obstacle data is always cross-checked at least one time before it is released operationally.

Q:    From where is the airport obstacle information sourced?
A:    Airport data is primarily sourced from a worldwide set of AIPs. Obstacle information is sourced from AIP Obstacle Charts, survey maps, and digital terrain data. NOTAM information is read and updated on a daily basis. The best obtainable data will always be used. If there are any uncertainties about the data conservative procedures and data will be used.

Q:    What quality checks are done to verify the airport obstacle information?
A:    Surveyed and updated information will always be cross check by a colleague before it is released operationally. Obstacle data is cross checked both when it is calculated and when it is released in the system. Reasonability checks are available for parts of the data in the system. All contradicting/questionable data origin from the authorities will be questioned and reported/followed up as part of our quality system. Data will be used conservatively until confirmation is received from the concerned authority.

Q:    How frequently is the airport obstacle information updated?
A: 
   The airport obstacle databases are updated regularly every 28th day, following the AIRAC cycle. In addition data is released in case of temporary information affecting the airports/runways operated by thecustomer. Performance applications are updated in case of release of amended SCAP data (the customer is responsible for providing the updated SCAP data) or when customer requests amendments.

Q:    Is there a sampling procedure to cross check a sample of the airport obstacle information produced?
A:
    Test procedures are a vital part of the production process. ISO 9001:2000 processes are implemented in all areas of the production. Airport obstacle data is always cross-checked at least one time before it is released operationally. Spot checks are performed on the data in the production database system.

To learn more about Navtech’s Aircraft Performance products, contact your account manager.

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