Originally Posted by
old,not bold
OK, what's the truth here? Is there a real safety problem with the sensors, or is it just a question of incorrect documentation that is perhaps old news anyway?
Just documentation.
The sensors were installed before the formal certification for use on the particular aircraft type. Later that paperwork was completed with no changes to the sensors.
I think the sensors were already approved for other aircraft, just not specifically for the 737-NG.