CAP 670 Air Traffic Services Safety Requirements 1(96)

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5.2  The Radio Site Clearance process of safeguarding against such third party radio site development, is part of a UK wide Ofcom notification activity.
GEN 03  Safety Requirements for Operational Trials in Air Traffic Services
Part 1 Preliminary Material
1 Introduction
Changes to Air Traffic Management technologies, procedures and practices are subjected to thorough off-line testing and assessment1 prior to introduction into an operational environment. It is sometimes necessary, in addition to formal off-line testing, to operate such systems operationally for a trials period prior to complete integration into the Air Traffic Management system.
An Operational Trial implements an unproven2 (or partially proven) change to ATS technology or procedures or practices for the purpose of providing operational Air Traffic Services.
2 Scope
Where trials or testing uses and contributes to the operational Air Traffic Management function during the course of the trial or testing activity, then this trial shall be performed in accordance with the requirements detailed within this document.
This document does not apply to off-line testing, or to any proving activity which has no impact on the operational Air Traffic Management function.
1.  
Changes to 'ATC Procedures', which can include routine, minor and major changes, may or may not include off-line testing depending on the scope and complexity. Very often the former are subjected to assessment by a panel of selected individuals.

2.  
Note the term 'unproven' relates to airspace under UK jurisdiction. Technologies, practices and procedures in use elsewhere in the world are considered unproven in terms of utility within the UK’s Air Traffic Management environment.

Part 2 Safety Requirements
3  Safety Objective
To ensure that the level of safety of the Air Traffic Management function is retained or improved during instigation, operation and removal of operational trials equipment, procedures or practices (1720).
4  Requirements
4.1  Start and end dates for the Operational Trial shall be submitted and agreed between SRG and the ATS provider prior to implementation of the trial (833).
4.2  Periods of operation (i.e. part time or continuous) shall be defined for the duration of the trials period described above (834).
4.3  Outline proposals for transition from operational trial to full operation shall be submitted to SRG for review prior to commencement of the trial (835).
NOTE:  Any approval granted shall relate exclusively to the trial (836), and shall not guarantee or suggest that approval for permanent operation will be granted (837).
4.4  The applicant shall demonstrate that, in the event of short notice failure of the trial, the ability to provide a tolerably safe Air Traffic Management service is not compromised (838).
4.5  The ATS provider shall provide a Safety Assessment for the operational trial with full and complete adherence to the SMS (839).
NOTE:  The Safety Assessment shall include evidence and arguments demonstrating that the trial does not have a negative impact on the safety of participating or non-participating aircraft and Air Traffic Control Units (ATCUs) (841).
4.6  The terms of approval for an operational trial shall include an undertaking by the proposer to supply to SRG a report containing analysis of the trial’s performance, and conclusions relating to the original objectives (842). Timescales (or progress milestones if appropriate) for the issue of this information shall be agreed prior to implementation of the trial (843).
4.7  An operational trial shall be compatible with established mechanisms, processes and where appropriate, equipment, which provides operational services (844).
GEN 03 Appendix Acceptable Means of Compliance
1  A clear distinction is required as to what constitutes an operational trial as opposed to routine testing. Testing, particularly of ground based systems, may use an operational environment in which to perform the test procedures. If the activities taking place affect the method or procedures used to provide the air traffic service, then these should be treated as an Operational Trial.
　
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