IATA: Nearly 50% Of Air Accident Investigations Lack Final Reports, Hindering Safety Progress

IATA says that nearly half of aviation accidents investigated under international rules still do not have final reports published, a gap that hampers the industry’s ability to identify hazards and prevent similar events. The finding was highlighted by IATA safety director Mark Searle during remarks at the International Aviation Safety Summit in Montreal, as reported by Reuters and subsequently incorporated into coverage by Simple Flying and AVweb.

According to Simple Flying, the publication rate for final accident reports under international rules has remained around 50% and is considered unacceptable by IATA. The organization emphasized that final reports are a key source for extracting safety lessons and driving improvements across the global aviation system, particularly for investigations conducted under ICAO Annex 13 procedures.

AVweb’s coverage adds context by extending the time horizon to 2018 through 2023 for commercially operated turbine-powered aircraft with at least 12,540 pounds of weight, noting that roughly half of accidents tracked by IATA lacked completed investigations in that period. AVweb also references a 2025 ICAO submission indicating that 140 of 268 qualifying accidents had completed investigations, underscoring the ongoing gap between incidents and formal findings.

Both reports align in stressing that the incomplete investigations span accidents of substantial scale and potential safety impact, though they do not detail specific incident cases within the international-rule category. The emphasis remains on the systemic delay in finalizing reports, rather than on particular flight events, locations, dates, or outcomes.

The AVweb report notes that the ICAO standard calls for final accident reports within 12 months when possible, with interim statements required if an investigation remains unresolved after one year. The absence of final reports means that safety lessons, contributing factors, and preventative recommendations may be delayed or never formally published for industry-wide dissemination.

In safety-industry context, AVweb cites a separate Flight Safety Foundation analysis showing that final reports were published for about 58% of airline accidents between 2020 and 2024, with a lower rate of 41% for fatal accidents in that window. The two sources acknowledge that these figures come from different data sets but collectively illustrate a persistent gap in final reporting across multiple datasets and methodologies.

IATA’s 2026 safety report, as cited by AVweb, also identifies a 63% completion rate for accidents occurring between 2019 and 2023, indicating some improvement over earlier periods but still leaving a substantial share of investigations without final documentation. The mixed reporting underscores a broader industry concern about the reliability and timeliness of safety information reaching operators, manufacturers, regulators, and the traveling public.

Both AVweb and Simple Flying reference high-profile investigations that remain without final reports, including the June 2025 Air India crash in Ahmedabad that killed 260 people. While India’s Aircraft Accident Investigation Bureau issued an interim statement on the accident’s first anniversary, a final causation and recommendation document had not been released at the time of reporting. This example is used to illustrate the real-world implications of the reporting gap, though neither outlet provides a definitive cause or final outcome for the incident.

Overall, the combined reporting from Simple Flying and AVweb frames the issue as a systemic, ongoing concern for aviation safety governance. Delays in publishing final reports hinder the industry’s ability to identify hazards, implement corrective actions, and advance safety progress, according to IATA. The authorities’ response and investigative progress remain a focal point of discussion at industry gatherings like the International Aviation Safety Summit.