ANSPs in turbulent times - uncovering the impact of demand shocks on efficiency using the Malmquist Index

Research output: Contribution to journalResearch articleContributedpeer-review



Global and local shocks such as COVID-19 or the Russian attack on Ukraine have influenced European air transport, and other shocks will appear in the future. The subsequent traffic shifts affect one bottleneck candidate of the system: the Air Navigation Service Providers (ANSP). In this paper, we apply productivity metrics and Malmquist Data Envelopment Analysis to examine how the ANSP related performance of the air transport system has changed between 2008 and 2020. By considering different levels of granularity we demonstrate the tremendous influence that shocks may have on demand figures and, subsequently, on performance metrics. As an example we show that the Corona pandemic had disparate impacts on various units, resulting in notable efficiency losses in 2020, however, with a strong variation between ANSPs. The findings of our study can be utilized in a subsequent root-cause analysis to quantify the impacts of both endogenous and exogenous factors on performance. This in turn will provide valuable insights for policymakers and industry stakeholders in managing air transport during and after such shocks, and to create a more resilient air traffic management system.


Original languageEnglish
Pages (from-to)101-116
Number of pages16
JournalJournal of the Air Transport Research Society
Issue number1
Publication statusPublished - Jun 2023

External IDs

ORCID /0000-0002-9937-8753/work/149439014
Mendeley 01dabbc9-56af-3c31-b47e-58ee3e503742


Research priority areas of TU Dresden


  • Air Traffic Management, Aviation Economics