![]() |
If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
|
#1
|
|||
|
|||
![]()
On larger aircraft they usually call out only non-ferris screws within
about 18" or so, epending on the manufacturer. They are usually in the wing tips about the same distnce from the nav lights and strobes. We swing the compasses when done and adjust them for their location. |
#2
|
|||
|
|||
![]()
Don Hammer wrote:
On larger aircraft they usually call out only non-ferris screws within about 18" or so, epending on the manufacturer. They are usually in the wing tips about the same distnce from the nav lights and strobes. We swing the compasses when done and adjust them for their location. Those are the easy ones. Nothing like leaning on a speed handle looking straight down at the ground a dozen feet below. In UH-1P it's in the boom on the other side of a bulkhead from the access panel on the bottom of the boom. Compass swings were quite amusing. Degaussing windscreens in the rain is also fun. As Don said nonferrous screws are the only ones allowed within a specified radius. However ferrous metals do wind up close to mag compasses. I found one aircraft type, I forget which, has the compass light switch right next to it. You guessed it, it ferrous content. Since it was mounted under the compensation magnets I don't think it mattered much, but the compass moved a couple of degrees when the light was turned on. Dan, U.S. Air Force, retired |
Thread Tools | |
Display Modes | |
|
|