皇冠体育app

This document relates to the publication of quarterly and annual data from civilian Search and Rescue Helicopter (SARH) operations in the UK. 皇冠体育app purpose of this document is to provide users of the statistics with information about the variables that are included in the statistics.

础濒濒听SARH听蝉迟补迟颈蝉迟颈肠蝉 are published on the Department for Transport鈥檚 (DfT)听SARH聽collection web page.

1. Publication information

皇冠体育app Search and Rescue Helicopter (SARH) statistics uses data originating from the Aeronautical Rescue Coordination Centre (ARCC).听ARCC聽are responsible for the co-ordination of the search and rescue helicopters, from answering the initial request through to the conclusion of the tasking. Previously, data was derived from the helicopter operators recording system, and provided to聽DfT聽by the Maritime and Coastguard Agency (MCA). Further information about these 2 data sources can be found in the聽Search and Rescue Helicopter Statistics - Forthcoming changes to data series聽from 2017.

A separate聽background quality report for聽SARH听蝉迟补迟颈蝉迟颈肠蝉聽has been produced by the聽DfT, with the purpose of providing users of the statistics with detailed information about the quality of the outputs, measured against different dimensions of statistical quality. As a result, this document helps to demonstrate how the department complies with the聽聽principle on quality.

2. Variables

Following a tasking, the聽ARCC聽records incident data which gets validated and verified by the聽MCA听补苍诲听DfT聽on a regular basis and signed off at the end of each month. It is unlikely that data would be revised at a later date therefore figures published in the聽SARH聽release will be carried forward for use in future publications. If there are any revisions, they will be clearly signposted to users. Variables in the current data source include:

• tasking count
• tasking category
• tasking location
• location type

2.1 Tasking count

A tasking is defined as the response of a UK聽SARH聽helicopter to an emergency as notified by the聽ARCC. If an emergency occurs where a helicopter is called out more than once, this is usually counted as one tasking. If helicopters from different bases are called out to the same emergency, this is counted separately - once for each base.

This means that the definition of 鈥渢askings鈥� is slightly different to the definitions of 鈥渃allouts鈥� and 鈥渋ncidents鈥� used by the Ministry of Defence. 皇冠体育app statistics also include those taskings which have been stood down before lift-off. This is due to a lot of activity taking place prior to the actual lift-off whereby time and resources are being used.

Currently, the聽ARCC聽data can be compared to the old data source used by the helicopter operators to validate the number of聽SARH聽taskings every month. 皇冠体育apprefore, the number of taskings is believed to be accurately recorded.

2.2 Tasking category

皇冠体育app tasking category (rescue or recovery, pre-arranged transfer, search only and support) is derived from a free text field completed by the聽ARCC聽and coded by database administrators at the聽MCA聽using the description of the tasking. In addition, the tasking narrative derives information which the聽DfT聽use to cross check information received by the聽ARCC.

2.3 Tasking location and location type

If a rescue or recovery takes place then the location is recorded based on the coordinates of where the persons were found. If a pre-arranged transfer occurs, some operators may record the midpoint of the tasking in the database, which could mean the tasking will have been recorded to take place over maritime when in fact, should be classed as coast or land. 皇冠体育appre are checks in place to make sure all taskings involving pre-arranged transfers are consistent and uses the final location of the tasking. For other tasking types, the initial location (for example, where a search will take place) is recorded, as supplied by the tasking authority such as the police force. It is not possible to assess whether the original coordinates provided to the tasking authority for a search were accurate.

皇冠体育app coordinates of the tasking location are also used to define the location type (land, coast and maritime). 皇冠体育app latitude and longitude of the tasking location are overlaid onto a map of the UK, and distances between the taskings and the outline of the map are used to categorise the data.

皇冠体育app definitions of the boundaries between land, coast and maritime were chosen based on other widely used definitions, what was sensible given the nature of the topic and what was possible using the data. This breakdown is only as accurate as the coordinate data. If latitude or longitude are recorded inaccurately then this may also impact upon the location, although the risk of such inaccuracies is perceived as low.

皇冠体育app location type of a tasking (meaning whether the tasking took place, for example, on a beach/cliff, mountain, or vessel) is based on the tasking narrative and standard definitions used by the聽ARCC. This gets validated by the聽DfT聽whereby the co-ordinates of each tasking are overlaid onto a map of the UK to ensure the location type is recorded as accurately as possible (for example, we would expect most beach/cliff rescues to take place around coastal/land areas of the UK).

3. Confidentiality

皇冠体育app published statistics does not reveal any private information about any individual or organisation and confidential information will be kept securely where access to data is controlled in accordance to departmental policy.

4. Contact us:

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