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| Fact #1: |
ICAO (a United Nations Agency) Annex 6 to the Convention on International Civil Aviation, Part 1 states in paragraph 4.4.1.2: "An instrument approach shall not be continued below 300 m (1 000 ft) above the aerodrome elevation or into the final approach segment unless the reported visibility or controlling RVR* is at or above the aerodrome operating minima." |
| Fact #2: |
The above paragraph has been enshrined in Polish law by the ministerial decree on the subject of aviation safety dated 5th November 2004 (Dz. U. z dnia 10 grudnia 2004 r.): "…the approach shall not be continued beyond the outer marker, or equivalent position, if the reported RVR*/visibility is less than the applicable minima... " "... the pilot to whom conduct of the flight has been delegated shall make the decision to continue or abandon the approach before descending below 1 000 ft above the aerodrome..." |
| Fact #3: |
The minimum required visibility for the approach available in Smoleńsk on that day: 1,200 metres |
| Fact #4: |
The actual visibility reported to the pilots that morning: 400 metres |
| Fact #5: |
Conclusion: In accordance with the above regulations
and law, descending below 1,000 feet (300 metres) was forbidden.
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(C) 2012-2016 Jan Chmielewski, all rights reserved.
* RVR = Runway Visual Range