Unauthorised Moving 787 ground test switch
Thread Starter
Joined: Apr 2003
Posts: 578
Likes: 2
From: Sutton
Unauthorised Moving 787 ground test switch
Had a pilot (unaware of whether engineers were working on the aircraft) move the ground test switch from enable back to normal.
There were engineers working on the aircraft but his response afterwards was that there would have been no problem anyway as the flying controls would have been locked out to prevent any unwanted control surface movement.
Anyone have any info on What tests is that switch used for, is he right that there is no chance of someone potentially getting hurt?
There were engineers working on the aircraft but his response afterwards was that there would have been no problem anyway as the flying controls would have been locked out to prevent any unwanted control surface movement.
Anyone have any info on What tests is that switch used for, is he right that there is no chance of someone potentially getting hurt?
Joined: Jul 2013
Aviation Qualifications: Non-Aircrew
Posts: 5,672
Likes: 3,316
From: Everett, WA
The ground test enable switch is just that - it is part of the logic that the various systems use to enable them going into the 'ground test' mode (it's generally not the only inhibit - safety critical systems will also have air/ground and/or airspeed inhibits).
Flipping the switch to NORM wouldn't result in an unsafe situation, but it could really upset anyone who was actually running a test at the time...
Flipping the switch to NORM wouldn't result in an unsafe situation, but it could really upset anyone who was actually running a test at the time...
Joined: Feb 2018
Posts: 800
Likes: 279
From: East of Westralia
Had a pilot (unaware of whether engineers were working on the aircraft) move the ground test switch from enable back to normal.
There were engineers working on the aircraft but his response afterwards was that there would have been no problem anyway as the flying controls would have been locked out to prevent any unwanted control surface movement.
Anyone have any info on What tests is that switch used for, is he right that there is no chance of someone potentially getting hurt?
There were engineers working on the aircraft but his response afterwards was that there would have been no problem anyway as the flying controls would have been locked out to prevent any unwanted control surface movement.
Anyone have any info on What tests is that switch used for, is he right that there is no chance of someone potentially getting hurt?
If it was safety critical, it would be tagged.
Joined: Apr 2023
Posts: 69
Likes: 1
From: Mumbai
Until it is proven that the movement of said switch DOESN'T pose a safety risk, under all circumstances, no matter how remote, IMO, this is an issue.
Especially, with the shear number of inter-connected systems aboard modern aircraft.
Especially, with the shear number of inter-connected systems aboard modern aircraft.
