Originally Posted by
Machinbird
Conso, either find a picture of the nose of a NG/MAX 737 and count the screw holes or go to the airport and make your own picture. I doubt if it has more than 6.
They can limit the interchangeability of probes by playing with the screw hole spacing, the mounting plate size, the electrical connectors, etc. There is an indexing pin involved as well, and that can control proper installation too.
With 9 holes you you would have a 40 degree error. That doesn't fit the scenario.
reason im picked 9 was due to 180 degree change right to left - and i was talking mounting the electric transducer internal to the vane and not the external mount. still cannot find details of AOA sensor which was **PROBABLY** made by Rockwell- Collins