Investigation Summary
The flight was a charter service returning 106 European tourists from Ceylon to Denmark. During the leg from Bombay to Dubai, the aircraft consistently reached waypoints ahead of its scheduled flight plan. A critical navigational error occurred when the crew miscalculated their progress, believing they were approximately 20 minutes further along their route than they actually were. At 17:49 UTC, the crew requested descent clearance, reporting they were 95 nautical miles from Dubai; in reality, they were approximately 162 nautical miles away. The controller, unaware of the aircraft's true position, cleared them to 4,000 feet and later 2,000 feet. As the Caravelle flew over the rugged Hajar Mountains, the crew likely encountered difficulty with VOR and NDB reception due to terrain masking. They visually identified city lights on the coast of the Gulf of Oman (Fujairah, Ghurayfah, and Kalba) and, believing these were the lights of Dubai on the Persian Gulf, continued their descent into the mountains.
Final Conclusions
The investigation concluded the primary cause was Controlled Flight Into Terrain (CFIT) resulting from pilot error. The crew flew the aircraft below the prescribed minimum altitude because they believed they were closer to Dubai than they actually were. Contributing factors included the use of an outdated flight plan, possible misreading of the weather radar for navigational purposes, and the visual misidentification of coastal towns which led the crew to believe they had reached their destination.
Video Analysis
No video analysis linked for this case file yet.
Systems & Failure Modes
Weather Radar
Suspected to have been misread by the crew to determine their distance from the coast.
VOR/NDB Navigation
Ground-based radio navigation aids that were difficult to tune or unreliable due to the mountainous terrain between the aircraft and Dubai.
Flight Plan
The crew was reportedly using outdated flight plan information which contributed to their navigational errors.
Interesting Facts
- 01At the time it occurred, the crash was the deadliest aviation accident in the United Arab Emirates.
- 02It remains the deadliest accident involving the Sud Aviation Caravelle aircraft type.
- 03The aircraft was only two years old, having completed its first flight in May 1970.
- 04The flight was significantly ahead of its original schedule, passing waypoints up to 10 minutes earlier than planned.
- 05The crash site was located approximately 80 km east of Dubai in the Hajar Mountains.
Safety Actions & Advisories
Minimum Sector Altitude Awareness
The accident highlighted the critical importance of adhering to Minimum Sector Altitudes (MSA), especially when navigational certainty is not established via multiple redundant sources.