SquishyOleo
New Member
- Joined
- May 26, 2008
- Messages
- 2
Hi everyone - I'm installing a D-180 in my RV-9A and am experiencing a couple very peculiar behaviors. The EDC-D10A is mounted in the left wingtip using the SafeAir1 remote compass mount. I was very careful to make sure the mounted angle relative to the D-180 was as spelled out in the installation manual and from what I can measure I'm within 1 degree. The EDC data cable was run in a separate conduit by itself to keep it away from other wires like the landing lights, nav/strobe lights, etc.
The D-180 has no problem communicating with the EDC-D10A as I see the heading tape and OAT (probe mode 2), and I can and have downloaded data from the D-180 as well as updated all the firmwares to the latest versions. I've entered the proper inclination value (69.5) as well as intensity (53790) and run the system through the N,E,S,W calibration. Once the calibration completes, I always get the warning message that the calibration was poor.
The compass tape NEVER sits still. The EDC-D10A can be sitting there completely motionless and the heading tape on the D-180 will always be moving - normally it seems to prefer left turns and the rate of turn indicator under the heading tape normally ends up maxed out in the direction the heading tape is moving. I'm thinking this may be a result of the poor calibration but I can't figure out why the calibration is poor so don't know what to fix.
The attitude indicator. This one has me scratching my head. Even though the plane is stationary on the ground, the attitude indicator always indicates an extreme turn (usually to the left) to the point of almost being upside down as well as an extreme nose down attitude. No matter what offsets I program into the unit, the attitude indicator will not move from this orientation - almost like it's stuck.
Does anyone have any recommendations as to what I could try to fix these issues?
The D-180 has no problem communicating with the EDC-D10A as I see the heading tape and OAT (probe mode 2), and I can and have downloaded data from the D-180 as well as updated all the firmwares to the latest versions. I've entered the proper inclination value (69.5) as well as intensity (53790) and run the system through the N,E,S,W calibration. Once the calibration completes, I always get the warning message that the calibration was poor.
The compass tape NEVER sits still. The EDC-D10A can be sitting there completely motionless and the heading tape on the D-180 will always be moving - normally it seems to prefer left turns and the rate of turn indicator under the heading tape normally ends up maxed out in the direction the heading tape is moving. I'm thinking this may be a result of the poor calibration but I can't figure out why the calibration is poor so don't know what to fix.
The attitude indicator. This one has me scratching my head. Even though the plane is stationary on the ground, the attitude indicator always indicates an extreme turn (usually to the left) to the point of almost being upside down as well as an extreme nose down attitude. No matter what offsets I program into the unit, the attitude indicator will not move from this orientation - almost like it's stuck.
Does anyone have any recommendations as to what I could try to fix these issues?