Investigation Summary
The flight was a holiday charter carrying tourists and airline employees' families. As the crew was unfamiliar with Ajaccio, they were navigating using a holding pattern to lose altitude. A critical linguistic and procedural breakdown occurred: the crew used the term 'rolling' to describe their turn in the holding pattern, which the controller misinterpreted as 'rolling' onto the final approach path. Consequently, the controller cleared the aircraft to descend to 3,300 feet, believing they were over the sea, when they were actually still over the rugged interior of Corsica. Despite Ground Proximity Warning System (GPWS) alerts in the final seconds, the crew could not clear the summit of Mont San-Pietro.
Final Conclusions
The primary cause was the crew's descent below the minimum sector altitude while not being certain of their exact position, compounded by the use of non-standard terminology that led the controller to believe the aircraft was in a safe area for descent. Contributing factors included the lack of radar at Ajaccio Airport, the presence of unauthorized personnel (the first officer's son) in the cockpit which distracted the crew, and an ambiguous approach chart.
Video Analysis
What REALLY happened this doomed flight?? Inex-Adria 1308 — Green Dot Aviation explores the series of misunderstandings and communication failures that led a brand new MD-82 into the side of a mountain in Corsica.
Watch on YouTube ↗If playback is blocked, the owner has disabled embedding — use the link above.
Systems & Failure Modes
GPWS
The Ground Proximity Warning System alerted the crew 13 seconds before impact, but the response was too slow to clear the terrain.
AJO VOR
The primary navigation beacon used for the approach; the crew was holding over this point while descending.
JT8D-217 Engines
The crew applied full thrust in response to the GPWS, but the engines required time to spool up from a low descent setting.
Interesting Facts
- 01It remains the deadliest aviation accident in the history of Slovenia (then part of Yugoslavia) and the MD-80 series.
- 02The aircraft was nearly brand new, having been delivered to the airline only four months prior with only 683 flying hours.
- 03The first officer's young son was in the cockpit jumpseat during the approach, contributing to crew distraction.
- 04The airport at Ajaccio was not equipped with radar at the time of the accident.
- 05The flight was overbooked by 43 passengers compared to the original manifest, mostly airline employees and their families.
Safety Actions & Advisories
Standardization of Terminology
The accident highlighted the danger of non-standard phrases like 'rolling inbound,' leading to stricter enforcement of ICAO standard phraseology.
Approach Chart Redesign
The investigation led to improvements in how mountainous terrain and holding patterns are depicted on approach plates to prevent spatial disorientation.