Statistical Analysis

Predictive Modeling

"What If" ... Scenarios

Short Connections Tool

117/121/135 Legality Tools


Monitoring crew legalities is the primary role of the scheduling department. However, monitoring is not enough. Knowing that a crew member has gone illegal when it is too late to solve critical issues has an adverse effect on the carrier’s revenue and reputation, and often causing government agency disclosures and fines.

During the day-day, the Operations Department must make moment-by-moment decisions as flights and crews are affected by weather, sick calls, airport delays, mechanical delays, etc. Typically those decisions are made without being able to anticipate the outcome.

Schedulers are often tasked with a reactive role to crew changes, instead of being able to be proactive and plan ahead for potential legality issues related to delays or cancellations.

For example, during Irregular Operations, Schedulers struggle to get ahead of the IROPS and have no way to put a plan in place ahead of the critical issues. The current Legacy Systems do not have a way for Scheduling Departments to enter ground delays or flight time delays for specific airports at specific times, to identify how many and which flights and crews will be affected by the irregular operations.


With “What If…” capabilities our legality tools can now be used as predictive modeling tools. ELP’s Predictive Modeling Tools are designed to give your Schedulers time to solve critical issues before it’s too late.

Our tools provide crews, management, and schedulers increased visibility of legality limits through our 117 Notify App, Dashboards, ACARS, and Predictive Modeling Web-based Tools. Increased visibility by crew members, means they are always aware of their limits, which helps avoid illegal departures.

Unlike the core legacy systems, ELP offers a full Legality Suite that enables our Customers to manage all aspects of flight, duty, and rest requirements. The ELP Legality Suite assures legal compliance for pilots and flight attendants, while giving Schedulers and Management the tools required to improve their visibility and reaction times, thereby minimizing critical and IROPS situations.


Our legality tool was initially built to accommodate the US 117 rule change.  However, our management team had the foresight to recognize the need for other rule sets in the future, nationally and globally.  Therefore, from the start the foundation of our legality tool was built with the unique ability to change the rule set without affecting the engine of the product.  This has allowed us to accommodate different rule sets in different countries (i.e., US 121 and 135 FARs, Israel 117, CARs, and other countries regulations), as well as multiple legacy systems and core databases, such as Sabre, Lufthansa, AIMS, etc. 


With the ELP Aviation Legality Suite you get access to a multitude of different Apps and resources custom designed and optimized for your Airline.  Every carrier has a legality tool of some sort. However, most legacy software approaches legalities as a reporting tool. ELP offers a full suite of legality tools and peripherals that serve to ease the burden of the Scheduling Dept and provides schedulers, management, and the crew with the ability to foresee and solve critical issues ahead of potential delays or cancellations. ELP’s Legality Suite Includes: Web-based Predictive Modeling, ACARS Notification Tool, Mobile Limit Notifications App, Dashboards, Statistical Analysis and, Historical Tracking Tools.

International Legality Predictive Modeling

ELP’s Legality software engine was specifically designed with the ability to alter the rule set to accommodate multiple countries and a variety of core software databases. ELP’s tools interface with the airline’s core scheduling system and uses the live data to feed our software engine.  Our predicative modelling tool calculates the Pilot and FA legalities (as well as contractual limits) on a continuous basis providing clear visibility of the crews that are coming close their legal limits.

As with any software tool, you want to have a solution in place that solves critical issues before those issues lead to costly cancellations and delays.  Our predicative modeling tools have valuable “What If” capabilities enabling our customers to foresee the flights impacted during IROPS, decreasing the length of the irregular operations thereby decreasing the number of cancellations and delays. 

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CARs Predictive Modeling Tool

Canadian airlines are now faced with the important transition of migrating their operation from one set of regulations they have been using for years to a new unfamiliar set of rules. As the core systems work to prepare for the rule changes, the airlines are left with the insecurity of the unknown and must wait to prepare for possible crew shortages and large-scale operational changes.  

ELP Aviation has successfully travelled this journey with our US customers in 2014 and in Israel in 2018.  We have the experience to guide you through this massive transition and provide you with the expert knowledge and experience required for this enormous undertaking. 

ELP’s legality tool went live with 10 Carriers in January of 2014, and over the last 5 years we have grown to servicing over 18 carriers, domestically and internationally, with a full suite of legality products.  Our legality software is currently built, proven, and has been successfully adapted to multiple rule sets and core databases. Our engine was uniquely designed to quickly adapt to new rules and therefore, can be rapidly migrated into your test environment, which enables the Canadian airlines to have their legality tool in place and testing a year before the rules go in to affect giving you ample time to prepare for the coming transition.

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117/121/135 3.0 Predictive Modeling Tools

Our 117/121/135 predictive modeling tools have valuable “What If” capabilities. This enables the user to enter a specific scenario without going into the carrier’s Crew Scheduling System. For example, “What If” a specific airport shuts down for 2 hours, ELP’s “What If” tool can calculate the number of crews affected by the shut down. For our customers who already own the 117 Predictive Modeling Tool – you now have an option to purchase the 117 3.0 browser based front-end that displays information on a flight by flight basis instead of a whole FDP. You can enter ground delays for certain airports during certain times and see how every flight impacted is affected.

Our legality tools are displayed through your Web browser either hosted or non-hosted solutions. ELP can set up with selective viewing only by approved airline personnel. Information may be displayed, sorted & filtered with unlimited options. 117-3.0 tracks Ground & Taxi delay FDP Impact, flight-by-flight legality limit information, and 121 Regs for FA and Cargo Carriers, such as 24/7 rest, min rest at end of a duty period, max duty periods, minimum connections producing possible delays.

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Our legality tools can be viewed in graphical form with drill-down capability on our Dashboards. Everything can be customized based on your company rules or unique needs.  You can choose the format, all colors, and buffers based on how you do business.  

A statistical analysis dashboard can be customized to display all of the past actual data, as well as upcoming scheduled data in custom graphs. You choose the time span (week, month, or quarter) and the software produces 117 duty, flight, and rest charts that show you how your operation fared against what the planning department produced. All of our graphs are fully customized and will show exactly what you ordered.

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The Pilot 117 ACARS Tool will send your 117 limits to all of your flights via ACARS minutes before departure showing the Captain (CA) and First Officer (FO) limits as they pertain strictly for their flight. The ACARS Tool feeds information to the crews when they initialize the flight. This is the perfect way for crews to stay on top of their legality limits without calling scheduling.  ARINC and SITA are both familiar with our products and can assist with the setup.

117 Limits Apps

ELP Notify 117 Limits app provides pilots an efficient method of checking their limits on duty days.​  This app ensures pilots are always aware of their limits, which helps avoid illegal departures. This app increases communications with Scheduling while removing the burden of phone calls to Scheduling.

Late Extensions Report

This tool will provide the extensions that were applied  to the FDP for each crew member and show the reasons. This is the report that the FAA requires per 117 Regulations. Its extremely accurate and no cleanup work is needed. Just run and print – or schedule to run on a timer by itself. The report can be emailed to you or directly to the FAA.

Monitoring Tools

Through an added column on your 117/121/135 Summary Reports and a buffer that you fully control, the Short Connections tool will display all crews that have shorter connections than your buffer allows. The tool will display the length of the connection in minutes, as well as details on the arrival and departure flights creating the long connection. This feature can be fully customized to ignore scenarios where you wish to disregard connection times.

Through an added column on your 117/121/135 Summary Reports and a buffer that you fully control, The Late Report tool will display all crews where the first flight of their FDP is delayed longer than your buffer allows. This will show situations where your Duty limits can be caught ahead of time and adjusted. The late report crews will disappear when it comes close to report time as to always show the valid ones.

We take pride in our products seamless integration with one another and encourage you to get in touch with us first if you need any additional functionality or services!

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