According to an article by Insurance Business, the issue centres on long-standing war liability provisions that automatically terminate cover following a hostile nuclear detonation anywhere in the world. While originally designed during the Cold War, when such an event was assumed to signal global catastrophe, the clause now looks dated in a more complex and unpredictable geopolitical landscape.
The risk is that airlines would lose the mandatory insurance required to operate. Without war liability cover, needed to protect against third-party claims linked to conflict, aircraft cannot legally fly, effectively grounding fleets regardless of where the incident occurs.
The clause reflects assumptions from another era. When it was introduced in the 1950s, nuclear conflict was widely seen as synonymous with total global destruction, meaning the immediate cancellation of cover was considered largely academic. Fast forward to the current era and the possibility of more limited or localised nuclear events has become more plausible, highlighting a mismatch between legacy policy wording and modern risk scenarios.
According to the article, this disconnect has prompted growing concern within the aviation insurance market. A contained nuclear detonation in one region could still trigger a global withdrawal of cover, despite limited direct impact on aviation operations elsewhere.
The core challenge to coming up with a market-wide solution boils down to distinguishing between large-scale and limited nuclear events in real time. The wide variation in potential weapon sizes and impacts makes it difficult for insurers to agree on revised wording that would allow for more nuanced responses.
Small concession
Nonetheless, the industry did manage to make one adjustment. The termination of cover is no longer immediate but delayed by 48 hours. As the article notes, this change provides airlines with a short window to manage operations and prepare for disruption. However, beyond that period, the fundamental issue remains unresolved.
The operational consequences of a full grounding would be severe. Airlines would be forced to halt departures, reposition aircraft and manage widespread passenger disruption across multiple jurisdictions. Restarting operations would likely prove complex and time-consuming, given the layered nature of aviation insurance programmes, which typically involve numerous insurers and reinsurers.
Even if there were consensus to reinstate cover, aligning all parties could take weeks or longer. Government intervention is often seen as a potential backstop, but the article suggests responses may be inconsistent, as authorities may view the issue as a commercial rather than systemic risk.
In response, parts of the market are exploring contingency solutions. These include pre-arranged frameworks designed to provide interim war liability cover following a nuclear event, allowing for a phased resumption of operations. One such model, developed by Gallagher, brings together a panel of insurers and external security experts to assess risks and determine where cover can be reinstated.
The approach has reportedly attracted participation from more than 100 airlines, highlighting growing awareness of low-probability but high-impact risks. The aim would be to restart flights in lower-risk regions first, gradually expanding as conditions stabilize.
While the likelihood of a nuclear-triggered grounding remains remote, the article explains that rising geopolitical tensions have revived the issue, which faded in importance for a while after the cold war ended.