Lois Larson
Flight delays are often classified as reactionary or knock-on delays, which are caused by previous late departures or arrivals. According to a study by Eurocontrol, nearly half of all flight delays in Europe are reactionary delays, caused by the late arrival of the incoming aircraft or connecting flight/crew/cargo. While airlines could reduce these delays by allowing more time between flights, this would increase costs and reduce efficiency.
| Characteristics | Values |
|---|---|
| Definition | Reactionary delays refer to the late arrival of an incoming aircraft (or connecting flight/crew/cargo) |
| Causes | Previous late departures or arrivals; aircraft maintenance; baggage loading; crew problems; aircraft cleaning; extreme weather conditions |
| Impact | Reactionary delays account for about 44% of total delays in Europe or five minutes per flight on average in 2017 |
| Solutions | Airlines could reduce reactionary delays by allowing more turnaround time between flights; improving the quality of delay data capture |
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What You'll Learn
- Reactionary delays are caused by the late arrival of incoming aircraft, accounting for 44% of delays in Europe
- Delays are also caused by the late arrival of connecting flights, crew, or cargo
- Airlines could reduce delays by increasing turnaround time between flights, but this would increase costs
- Reactionary delays are knock-on delays caused by previous late departures or arrivals
- The delay cost can be attributed to the original causer of the delay, which may still be within the airline
Reactionary delays are caused by the late arrival of incoming aircraft, accounting for 44% of delays in Europe
Reactionary delays, also known as "knock-on" delays, are caused by the late arrival of incoming aircraft and are responsible for nearly half of all flight delays in Europe, according to a Eurocontrol study. This issue is not limited to Europe, as data from the US Department of Transportation shows that late-arriving aircraft is a significant cause of delays there as well. Reactionary delays occur when an aircraft arrives late at an airport due to a previous delay, causing a ripple effect of delays for subsequent flights. This can be caused by a variety of factors, including maintenance issues, crew problems, or connecting flight delays.
The impact of reactionary delays is significant, with an average of five minutes per flight delay attributed to this issue in 2017. The problem is not isolated to a single airline or airport but is a widespread challenge across the aviation industry. While airlines could reduce reactionary delays by allowing more time between flights, this would increase costs and impact their efficiency. Additionally, airports aim for quick turnarounds to maximise the utilisation of their gates and stands.
The likelihood of experiencing a reactionary delay also depends on the time of day, with a higher probability of delays occurring later in the day compared to morning flights. This may be due to the accumulation of delays throughout the day, resulting in a higher chance of knock-on delays. Furthermore, certain factors, such as wind conditions and the availability of direct routes, can impact the gate-to-gate time for flights, potentially exacerbating reactionary delays.
While the Eurocontrol study provides valuable insights into the prevalence of reactionary delays, it does not offer solutions to address this issue. However, some airports and airlines have taken initiatives to mitigate the impact of these delays. For example, improving the quality of delay data captures and adjusting the framework for reporting delays can help identify the original cause of the delay and hold the responsible party accountable. Additionally, finding solutions to reduce the impact of delays, such as improving baggage delivery processes, can help minimise the inconvenience caused by reactionary delays.
As air traffic continues to increase, the management of reactionary delays becomes even more critical. By understanding the causes and impacts of these delays, airports, airlines, and regulatory bodies can collaborate to develop strategies that minimise their occurrence and improve the overall efficiency of flight operations. This may include exploring options beyond quick turnarounds and finding innovative ways to manage costs while reducing the likelihood of reactionary delays.
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Delays are also caused by the late arrival of connecting flights, crew, or cargo
Delays in the aviation industry are often caused by factors beyond an airline's control. One such factor is the late arrival of connecting flights, crew, or cargo. When a previous flight is delayed, it can cause a domino effect, leading to subsequent flights departing late as they wait for connecting passengers, crew, or cargo. This delay propagation, as it is referred to, can impact multiple flights throughout the day and across different airports.
The late arrival of connecting flights is a significant contributor to delays. When an incoming flight is delayed, the outbound flight cannot depart on time, especially if passengers from the incoming flight are connecting to the outbound one. This scenario is common during busy travel periods, like holidays, when there is a higher volume of travellers with connecting flights. In such cases, the airline is responsible for compensating affected passengers, as per the automatic refund rule. Passengers are entitled to refunds or alternative arrangements if their flight is cancelled or significantly changed, and they do not accept the changes.
Similarly, delays can occur when essential crew members, such as pilots or flight attendants, are held up due to factors like traffic or previous flight delays. Airlines must ensure compliance with crew legality, which includes regulations around rest periods for crew members. As a result, a late-arriving crew member can cause a delay to ensure these regulations are met.
Cargo delays can also contribute to flight delays. Airlines must manage the loading and unloading of cargo, and any delays in this process can impact the departure time. This is especially true for cargo airlines, where the timely arrival of cargo is critical to maintaining their schedule.
To mitigate the impact of these delays, airlines often have protocols in place, such as allocating a certain buffer time between connections or having backup crew and efficient cargo handling procedures. However, when these delays occur, they can have a cascading effect, leading to further delays down the line.
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Airlines could reduce delays by increasing turnaround time between flights, but this would increase costs
Reactionary delays, also known as knock-on delays, are caused by previous late departures or arrivals, resulting in nearly half of all flight delays in Europe. While there are strategies to mitigate these delays, they often come with increased costs. One approach to reduce reactionary delays is to increase turnaround times between flights. Turnaround time refers to the time interval between an aircraft's arrival and its next departure, encompassing both arrival and departure time differences with respect to the schedule.
Airlines could potentially reduce delays by increasing this turnaround time, allowing more buffer time to accommodate potential delays and ensuring that subsequent flights are not impacted. However, this approach comes with increased costs and may lead to lower efficiency. Longer turnaround times mean that aircraft and crew utilization decreases, as they spend more time on the ground between flights. This strategy can be particularly challenging during peak hours at larger airports, where higher traffic volume and a greater number of flights can lead to increased costs and complexities.
To optimize ground operations and minimize turnaround times, airlines must address specific factors. These factors include the variability of gate positions, limited resources for ground operations, potential delays in obtaining ATC clearance for take-off, and the possibility of missing airway slots. By effectively managing these aspects, airlines can reduce the likelihood of unexpected extensions to ground time, which often contribute to overall delays.
While increasing turnaround time can help mitigate delays, it is not the only strategy available to airlines. Other approaches, such as increasing cruising speeds, rebookings, and cancellations, can also be employed. Additionally, predictive models, such as linear discriminant analysis, can aid in forecasting and reducing the impact of delays by considering factors like international flight status, temperature and wind speed at destination airports, and air traffic congestion.
Although increasing turnaround time can be effective in reducing delays, it is a delicate balance between mitigating delays and managing costs. Airlines must carefully evaluate their operations, considering factors like flight frequency, aircraft utilization, and crew efficiency, to determine the optimal approach that minimizes delays while maintaining operational efficiency and controlling costs. Ultimately, the decision to increase turnaround time comes with financial implications and requires careful consideration of the trade-offs involved.
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Reactionary delays are knock-on delays caused by previous late departures or arrivals
Reactionary delays, also known as knock-on delays, are caused by previous late departures or arrivals. They are the most common cause of flight delays, accounting for about 44% of all delays in Europe or an average of five minutes per flight in 2017. This means that if you're flying later in the day, you're more likely to experience a delay. Reactionary delays can be caused by a variety of factors, such as the late arrival of the incoming aircraft, connecting flights, crew, or cargo.
While airlines could potentially reduce reactionary delays by allowing more time between flights, this would increase costs and reduce efficiency. Additionally, airports prefer quick turnarounds to maximise the utilisation of their gates and stands. Another challenge is that when a flight is delayed, it can be difficult for the airline to estimate the duration of the delay, especially in the early stages. This can lead to "creeping delays", where unexpected issues prolong the delay beyond the initial estimate.
Several factors contribute to reactionary delays. One significant factor is the challenge of managing hundreds of passengers and their baggage within tight timeframes while adhering to strict security and safety regulations. Delays caused by factors within the airline's control, such as maintenance, crew problems, aircraft cleaning, baggage loading, or fueling, are classified as "Air Carrier" delays. These delays can have a ripple effect, impacting not only the delayed flight but also subsequent flights.
External factors also play a role in reactionary delays. Extreme weather conditions, such as tornadoes, blizzards, or hurricanes, can cause significant delays or even cancellations. Delays coded as "NAS" (National Aviation System) refer to delays attributable to the national aviation system, including non-extreme weather conditions, airport operations, heavy traffic volume, and air traffic control. In 2020, 45.8% of NAS delays were weather-related.
While historical data suggests that delays are relatively low, air traffic is projected to increase significantly by 2035, raising concerns about the potential rise in delays. To address reactionary delays, it is essential to attribute the delay cost to the original cause, whether it is the airline, the airport, or another responsible party. By holding accountable the parties responsible for causing delays, improvements can be made to reduce their occurrence.
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The delay cost can be attributed to the original causer of the delay, which may still be within the airline
Reactionary delays, also known as knock-on delays, are caused by previous late departures or arrivals. They account for nearly half of all flight delays in Europe, or five minutes per flight on average in 2017. This is because an aircraft arriving early would not be able to take off on its next flight any earlier than the scheduled time of departure. As a result, the delay cost can be attributed to the original causer of the delay, which may still be within the airline.
Airlines are required to provide passengers with timely information about changes in flight status. For flights scheduled to depart within seven days, airlines must provide status updates 30 minutes or sooner after becoming aware of a change. This information must be available on the airline's website and telephone reservation system, as well as at all flight status displays under the airline's control.
Controllable flight delays or cancellations are caused by the airline, such as maintenance or crew issues, cabin cleaning, baggage loading, or fueling. In these cases, the airline is held accountable and must adhere to their customer service plan commitments. Passengers may be entitled to a refund or compensation beyond a refund, depending on the airline's policies.
When a flight delay unexpectedly becomes longer, it is called a "creeping delay". This can be due to unforeseen circumstances such as worsening weather conditions or more complex mechanical problems. Airlines could potentially reduce reactionary delays by allowing more time between flights, but this would increase costs and affect airport gate and stand availability.
By identifying the original causer of the delay, whether it is the airline or external factors, appropriate measures can be taken to minimise reactionary delays and improve overall airport operations. This approach promotes accountability and helps to allocate resources effectively to prevent further disruptions.
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Frequently asked questions
A reactionary delay is a delay caused by the late arrival of an incoming aircraft, connecting flight, crew, or cargo.
Reactionary delays are often caused by previous late departures or arrivals.
Reactionary delays accounted for about 44% of the total amount of delays in Europe in 2017, or five minutes per flight on average.
Airlines could reduce reactionary delays by allowing more time between flights. However, this would increase costs for airlines and airports due to the maximization of gate and stand space.
Other causes of flight delays include aircraft maintenance, crew problems, baggage loading, and extreme weather conditions.
