4 ms·
I wonder if a bigger factor would be the test pilots knowing in advance what the test was. Eg. being told, "next we are testing what happens when MACS fails",
by adwww 7y ago
I wonder if a bigger factor would be the test pilots knowing in advance what the test was.
Eg. being told, "next we are testing what happens when MACS fails", whereas in a real life situation the pilot has to diagnose what has happened, recall the correct remedial action, then act on it.
- simion314 7y agoAlso this test pilots may know the inner working of the plane where the real pilots were not told that MCAS was added behind their backs and some buttons/switches changed behavior. Also were this test pilots had accessed to extra diagnose data where regular pilots were not provided even with a sensor disagree message
- pilsetnieks 7y agoThere wouldn't be a sensor disagree message because there was only one AOA sensor, prone to failure, with no redundancy.
- paulclinger 7y agoMCAS was only using data from one of the AOA sensors (picked during restart), but two were still present, so sensor disagree light/message (when available) would show disagreement between the sensors.
- simion314 7y agoAnd Boeing decided to make it an optional paid feature, though I am not sure if it was added later by request from airlines or they designed it like this.