Operational Availability (Ao) Sample Clauses

Operational Availability (Ao). Ao is availability during all segments of time when the equipment is intended to be operational. Ao provides the most realistic measure of availability of equipment deployed and functioning in a combat environment. However, one significant problem associated with determining Ao is the calculation of ALDT and PMT. Defining ALDT and PMT under combat conditions is not feasible in most instances and data collected during a test may not provide a good estimate. Either the discrete model (for on-demand equipment) or the continuous model of operational availability may be used, as appropriate. Discrete Model. Ao = Continuous Model. Ao = UpT UpT + DnT = OT + ST OT + ST + TCM + TPM + TALDT Where: OT = The operating time during OMS/MP ST = Standby time (not operating, but assumed operable) during OMS/MP TCM = The total corrective maintenance downtime in clock hours during OMS/MP TPM = The total preventive maintenance downtime in clock hours during OMS/MP TALDT = Total administrative and logistics downtime (caused by OMFs) spent waiting for parts, maintenance personnel, or transportation during OMS/MP. (Note that events attributed to downtime may consist of Operational Mission Failures and Essential Maintenance Actions; and, are system specific dependent on that system’s formally defined Failure Definition/Scoring Criteria.)
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Operational Availability (Ao). The probability that an item will be mission capable when it is required. Xx is defined mathematically as the ratio between uptime and total time. It is the quantitative link between readiness objectives and supportability. (DAU Glossary) For on- demand systems, it can also be defined as the ratio of ready systems to the number of available systems. See the various Service appendices to this annex for Service-specific Ao formulas.
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Operational Availability (Ao). The degree (expressed as a decimal between 0 and 1, or the percentage equivalent) to which one can expect a piece of equipment or weapon system to work properly when it is required. Operational Availability is calculated by dividing uptime by the sum of uptime and downtime. It is the quantitative link between readiness objectives and supportability. (DAU Glossary) It can also be calculated by the number of systems that are ready, divided by the number possessed (e.g., the number of times the system was available, divided by the number of times the system was required) for on-demand systems. See the various Service appendices to this annex for Service specific Ao formulas.
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Operational Availability (Ao). Ao is availability during all segments of time when the equipment is intended to be operational. Ao provides the most realistic measure of availability of equipment deployed and functioning in a combat environment. However, one significant problem associated with determining Ao is the calculation of ALDT and PMT. Defining ALDT and PMT under combat conditions is not feasible in most instances and data collected during a test may not provide a good estimate. Either the discrete model (for on-demand equipment) or the continuous model of operational availability may be used, as appropriate. Discrete Model. Based on the binomial distribution: Ao = Continuous Model. Based on the exponential distribution: A = UpT o UpT + DnT Where UpT and DnT are determined by totaling their subcomponent times (Refer to Figure 3-1).
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Related to Operational Availability (Ao)

  • General Availability The commitment to availability specified in the letter of appointment shall be subject to mutually acceptable revision. Such revision will occur once per year, or, if mutually agreed between the Employer and the employee, on a more frequent basis. The Employer will issue a revised letter of appointment to reflect approved changes to employee’s general availability.

  • Service Availability You understand that Service availability is at all times conditioned upon the corresponding operation and availability of the communication systems used in communicating your instructions and requests to the Credit Union. We will not be liable or have any responsibility of any kind for any loss or damage thereby incurred by you in the event of any failure or interruption of such communication systems or services resulting from the act or omission of any third party, or from any other cause not reasonably within the control of the Credit Union.

  • EPP service availability Refers to the ability of the TLD EPP servers as a group, to respond to commands from the Registry accredited Registrars, who already have credentials to the servers. The response shall include appropriate data from the Registry System. An EPP command with “EPP command RTT” 5 times higher than the corresponding SLR will be considered as unanswered. If 51% or more of the EPP testing probes see the EPP service as unavailable during a given time, the EPP service will be considered unavailable.

  • High Availability Registry Operator will conduct its operations using network and geographically diverse, redundant servers (including network-­‐level redundancy, end-­‐node level redundancy and the implementation of a load balancing scheme where applicable) to ensure continued operation in the case of technical failure (widespread or local), or an extraordinary occurrence or circumstance beyond the control of the Registry Operator. Registry Operator’s emergency operations department shall be available at all times to respond to extraordinary occurrences.

  • System Availability Although we will try to provide continuous access to the Service, we cannot and do not guarantee that the Service will be available 100% of the time and will not be liable in the event Service is unavailable. Actual service or network performance is dependent on a variety of factors outside of our control. If you notify us within twenty-four (24) hours and we confirm an outage consisting of a period of two (2) hours in any calendar month, and not due to any service, act, or omission of you, a third party, your applications, equipment or facilities, or reasons outside of our control, you shall be eligible for a service credit. A service credit shall be computed as a pro-rated charge for one day of the regular monthly fees for the Service in the next monthly statement. Intermittent service outages for periods of less than two (2) hours are not considered service outages. Outages caused by routine scheduled maintenance are also not considered an outage. You shall receive advance notice no less than forty-eight (48) hours in advance of our scheduled maintenance. Scheduled maintenance will be performed between 12:00 a.m. and 6:00 a.m. CST.

  • RDDS availability Refers to the ability of all the RDDS services for the TLD, to respond to queries from an Internet user with appropriate data from the relevant Registry System. If 51% or more of the RDDS testing probes see any of the RDDS services as unavailable during a given time, the RDDS will be considered unavailable.

  • Product Availability Under no circumstances shall Company be responsible to Representative or anyone else for its failure to fill accepted orders, or for its delay in filling accepted orders, when such failure or delay is due to strike, accident, labor trouble, acts of nature, freight embargo, war, civil disturbance, vendor problems or any cause beyond Company's reasonable control.

  • FUNDING AVAILABILITY This Contract is contingent upon the continued availability of funding. If funds become unavailable through the lack of appropriations, legislative or executive budget cuts, amendment of the Appropriations Act, state agency consolidation or any other disruptions of current appropriations, DFPS will reduce or terminate this Contract.

  • Minimum Availability Borrower shall have minimum availability immediately following the initial funding in the amount set forth on the Schedule.

  • DNS service availability Refers to the ability of the group of listed-­‐as-­‐authoritative name servers of a particular domain name (e.g., a TLD), to answer DNS queries from DNS probes. For the service to be considered available at a particular moment, at least, two of the delegated name servers registered in the DNS must have successful results from “DNS tests” to each of their public-­‐DNS registered “IP addresses” to which the name server resolves. If 51% or more of the DNS testing probes see the service as unavailable during a given time, the DNS service will be considered unavailable.

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