Definitly repeatable on the ground.  Most obvious when ATIS is beaking the com squelch, but no ATIS voice.

When 3rd crew audio panel is unplugged, noise goes away.  Pretty repeatable.

When PIN D is pushed out of the 3rd crew audio control plug, problem goes away.

Problem solved itself after 2 hours of troubleshooting.

Figures.

May 7 leg 1.

Closer look at 1257 01 follwing AFCS dissconnect.

Less interesting is Radar data bus

After much troubleshooting, this is the simplest squawk we can get:

AP will occasionally “release” the pitch control.  AC might drift down at 100 ft/min.  Pilots can gently pull up on the yoke and regain altitude.  The yoke is “free”, as in no drag or contercommand from the pitch servo. During this time the autopilot will remain engaged.

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Initial investigation will be

1. Wires from the FGCs to Pitch servo.

2. CWS mode engaging for some reason.

3. The exchange pitch servo has a different squawk than the original.  Suspect failed exchange servo.

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Stick figure for SPZ-8000 CPL

What are the other troubleshooting guidelines for the SPZ-8000 in F900? | toddheffley.com
http://toddheffley.com/wordpress/?p=6540

2nd line has the stick drawing for AFCS 1 2.

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Reading the codes:

This one runs under Libre Office:

SPZ-8000-Flight-Fault-Summary   .ods

This one runs under excel:

SPZ-8000 Flight Fault Summary

1/2 inch by 2 1/2 inches opening.

Over 2 inches wide

Very intermitant message.

Turned out, the relay 422R had low pin tension on X1.

We found a dozen female pins w low pin tension.

Actual FAR you are complying with:

from FAA website:

• You will need to consistently document your OJT activities. We recommend you document your experience on an Aviation Maintenance Technician (AMT) log. You can purchase a logbook, develop a log of your own, or document your activities using a sample log you find online. On your log, be sure to include these important details:
  • Maintenance task performed
  • Time spent on each task
  • Validation by a certificated Airframe and/or Powerplant Technician

farther down

The FAA may give you credit for your practical experience after an ASI has reviewed your documentary evidence. Your documentary evidence must show that you meet the time requirements (18 or 30 months, as applicable) and during that time you gained actual experience with the procedures, practices, materials, tools, machine tools, and equipment generally used in constructing, maintaining, or altering airframes or powerplants, appropriate to the rating sought.  The more documentary evidence you provide to the ASI, the better.

Documentary evidence is any record you provide that shows proof of training and OJT the practical experiences you have completed. Examples include:

• AMT log signed by your supervising mechanic;
• a statement from your employer that you earned practical experience with procedures, practices, materials, tools, machine tools, and/or equipment used in constructing, maintaining, and/or altering an airframe or a powerplant for the required time; and
• letter of recommendation.