A7700
ICAO DOC4444
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7.1.1.2 Aerodrome controllers shall maintain a
continuous watch on all flight operations on and in the vicinity
of an aerodrome....Watch shall be maintained by visual
observation
…. in a literal sense, explain to me how any ADC or SMC in any tower can ‘practically’ comply with this ….. it is
impossible to ‘watch’ everything all of the time …. !!!
Australian CASR Part 172 Manual of Standards
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10.10.2.5 ATC must maintain, as far as possible, a continuous visual watch to detect and determine the position, and ensure the safety of, aircraft.
.. is a more reflective/achievable requirement!
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.. all of that Quote from 4444 may well have been complied with to the letter (in a reasonable and practical sense)!
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.. a clue might be that (apparently from an earlier post) ATC did not say anything during the takeoff attempt and (one assumes) the subsequent accident sequence!
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……seems to this observer that ATC were unaware of the problem (for reasons unknown to us at this point) … otherwise an alert/warning/stop instruction could have been issued!
edited for grammar