Three questions that should be addressed in the investigation;
What methods did Air India Express use to promulgate SAFO 19003 to flight crew?
Was the accident crew aware of the existence of the SAFO?
Did the accident crew receive any training or guidance related to the SAFO?
SAFO 19003
Purpose: This SAFO cancels and replaces SAFO 15009 and warns airplane operators and pilots that the advisory data for wet runway landings may not provide a safe stopping margin especially in conditions of Moderate or Heavy Rain.
Recommended Action: Directors of Safety and Directors of Operations (Part 121); Directors of Operations (parts 135, and 125), Program Managers, (Part 91K), and Pilots (Part 91) should ensure pilots verify, prior to initiating an approach, that the aircraft can stop within the Landing Distance Available using a RwyCC of “2” whenever there is the likelihood of moderate or greater rain on a smooth runway or heavy rain on a grooved/PFC runway.
A quick OPT calc using a flat runway and CC2 gives an auto brake stopping distance exceeding 3000m.
Is every 737 pilot fully aware of this SAFO issued in 2019?
If you say “SAFO 19003” to a 737 Captain they should immediately know what you are talking about......is that the case?