Category Archives: F900 Troubleshooting

Holds Falcon 900 specific troubleshooting information

How do I come to terms with the Primus 2000 “Download and Clear” BrewHaHa

If you get a “Avionics Maint” white message:


You can ignore it.  Or you can go through a 1 YEAR hassle trying to get all of this stuff figured out..


Hart Aviation:

We build a Primus Data Loader, P-2000 Maintenance Access Unit, (Built to Honeywell Drawings). This unit was built for the roughly 19 Falcon 900’s that did not have built in data access ports. (See our web site under the Falcon 900 section near the end of the page) We have one on hand which sells for $4250.00.

F900ex S/N 028 the l42FV and R42FV are under the blank covers in the side consoles.


here is the written instructions:

F900EX Primus 2000 Download & Clear Procedures


MAU Drawing

MAU Drawing


What in the world is this?



1 year




How do I make peace with the Printer on BZZ?

Here is the last action when Hugo worked on it:


Hi Todd, below are the steps we took to fix the printer issue.


1.       Wireless printer was configured to connect to some unknown wireless network. So we had to reset the printer when we took it back to the office.

2.       We upgraded the firmware on the printer so that it could support air print. We enabled Bonjour on the printer.

3.       Configured printer with IP address and successfully connected it to the plane’s “VQBZZ Wireless Access” network

4.       Tested printer successfully from windows laptop via wireless and iPad via air print.

Hugo E. Sanchez 

210 321 8572
210 663 3163

How do I come to terms with Fault Codes in a SPZ-8000 for F900?

Here is the simple break-in to get the codes:


If you pull the breakers in the air as a matter of troubleshooting, the codes are lost!

If you land and power down airplane, the codes are lost!

Flight Fault summary must be performed after aircraft lands, before power is turned off.
YD and MTRIM must be dark.
At the copilots left elbow in the engineers Panel.
There is a Bat Handle switch labeled “AFCS TEST” or some such.
Select it up.
The ID802 panels will self test.
Then , When they are finished you should see “01 – FGC TEST?” Do NOT perform the test now.
Instead, push the LAFCS button which in this case acts as a “Previous Screen” button.
A few screens back, you will get to “98 – FLGHT FAULT SUMMARY”
Push “RESET” to get to the flight fault screen.
That should show the codes for the LEFT computer.
Take a picture of that screen.
Now press reset again.
That should show the RAFCS faults.
Take a picture of that screen

Here is the Spreadsheet that unwraps the Hex code to plain english…. or as plain english as a Honeywell engineer can make it.


This one runs under Libre Office:

SPZ-8000-Flight-Fault-Summary   .ods



This one runs under excel:

SPZ-8000 Flight Fault Summary


SPZ-8000-Flight-Fault-Summary – this one is from Augusta


here is an example fault code



Plain Text trouble shooting book:


Falcon 900 DFZ TS Guide

How do I come to terms with Arduino-429 interface?

Here is a wonderfull 429 overview


airinc_429TheAvionicsHandbook_Cap_2 ia a universal converter project.


The fellows name is AllThumbs on VAF thread about the SL30 to Dynon HSI is a very nice explanation of a 429 to 232 converter

Here is the data from Niel on the frankenverter



here is a nice blurb on using a parallel port to test AIRINC 429 equipment



here is some detail abouthe labels

Arinc429WordList (copy)

Here is the first Distillation of equipment labels


hand tools in VP-BMB

r to left

Dewalt Lion , batteries in a Quart can for containment

screwdriver tips

velcro, tywrap, tape


crush proof container, magnet, fingers, mirror

3/8 deep 12 points, ratchet handle

1/4 drive set

small ratchet screwdriver, large screw driver, poor quality

punch, allen, knife, measure tape

4 picks, small screwdriver, slot, phillips


small diagonal, visegrips,

KNIPEX needle nose, diagonal, slip joint pliers.

small combo, large gear wrench, large adjustable.



3 jack adapters
2 spanners
static wick flags
TR pins long only
Paint cutters
Wish List:
#3 screw driver tips
Swastika tips
good volt meter
electric pencil mark each tool “051”
one short tr pin.
break away wire.
1 1/4 joy wrench
single hole punch
stapler, (butch has the best one
tags w/ string
other items that were already aboard bmb:
tr pins… long only, need to add one short one.
paint cutters
o2 tool
safety wire
BMB_other tools