Category Archives: AircraftTroubleshooting

How do I load the NAV Data Base in a NZ2000?



Get the usb drive from the Grey Box……If you elect to use any other stick, it must be already formatted….FAT 

use SHOW HIDDEN FILES to be sure there is no other files

try not to connect the onboard maintenance computer directly to the internet for two reasons:

1. It is XP, and thus virtually a magnet  for viruses.

2. it is set to HARD IP for various reasons, that means you will go grey fooling with the DHCP blah blah blah blah.


delete all existing files on the stick

user a178bepx

pw Longtail34

less one each digit

Download NAV db, WORLD

you end up with a EXE somewhere on your laptop.

Run the EXE and set the “extract to” path to go directly to the USB stick.

let it extract.

go to the airplane.

USB loader on the left.  Be sure to POWER and SELECT correctly

NZ2000 ,


Some trubleshooting:

Smith, Keith <>

10:54 AM (2 hours ago)

to todd, Aero
See dataloader code related 85. Once the other items are confirmed you may have a DL hardware issue or connection problem.When the CDU displays a message of CHECK DATA LOAD (XX) after
an attempted disk operation, the numeric value in the XX position is
interpreted using the data loader fault codes listed

See 01 (this error number will be seen instead of 01 if the FMS has
the new synchronous download mode)

Check electrical connections.  Either the FMS cannot talk to the dataloader (the red drive activity
light does not  go on) or the FMS does not hear the response from the dataloader (the
drive light turns on).

Keith Smith
Senior Technical Support Engineer – SATCOM & CMS
Customer & Product Support
Honeywell | Aerospace

1-855-808-6500 (US/CAN) or 1-602-365-6500 (INTL)
Direct: Option 9, then ext 5746
Avionics: Option 1
Mechanical: Option 2

For 24/7 AOG Part Support:
1-800-601-3099 Option 4 (US/CAN)
1-602-365-3099 Option 4 (International)

Items not technical related or alternate options please use,
Contact Us


How could Ice accumulate on the inlet screen while ground running the APU on a Falcon 900?


Only a Texan would take a picture of ice!

I ran he apu on f900 087 for 2 hours this morning configuring a satcom.

Light blowing snow……..In Texas!…….

This ice formed inside the inlet.

Is this a known deal?

Looks like if we had restarted the APU  it might have been a bad day at the airport.


Two more interesting factoids.

The engine shop ran a 900 ex for quite a long time the same morning .  It came in about 45 min after we took the picture.

It had exactly the same ice on the inlet screen. But it was only 1 inch long.

While shutting down the apu, I noticed engine 2 oil temp was 50 deg c.  I had not run engine two at all, and the oat was 15 deg f.

That sounded a little suspicious, so we climbed all over the no.2 engine doing another leak check.

Sure enough there was a crack in the flange of the fgfb72155500a2 venturi pipe.

It was filling the number 2 engine cowl with hot bleed air.  That probably added to the amount of snow that melted off of the cowl and ran down into the inlet.

Bizaar set of circumstances.


What is the mode flow for Altitude “Track” mode in a 1124?






The course fine mode is ignored after the “caapture” high gain period, 6 seconds?

Then, the 590a-3K sets a clutch, and error out is fed to the FD computer, the “PitchSteer” through to the AP AMP(?).


Later WW S/N’s repeat the time constant over to the AP as well as the FD computer.





How do I load the Perf Data Base in a NZ2000

Insert the USB key with the regular Nav Data Base.  The Aircraft Data Base files are on the same disk.
On the “DATA LOAD page, the 2R key should say ‘Aircraft DB”.  … If the stick has the DB on it, and it is plugged in to the data loader correctly.
Choose f900V2 or some such.
Page 6-172 of the pilots guide.
You must load both sides seperatly.
Some other notes
My performance values do not seem to be correct (ceiling altitude splits, cruise alt splits,
ETE’s, Fuel Estimates)
1. Verify that the proper Aircraft Database is in use. You can do this by looking on PERF INIT
page 1, under ACFT TYPE. This should correspond to your specific aircraft.
2. If the ACDB is incorrect (or to clear and reset ACDB performance to the default values) reload
the correct ACDB. The ACDB is available on either floppy disk 1 or 2 or the USB thumb drive
(as appropriate) of your monthly Navigation Database update.
Repeat all Data Load, Tail # and V-Speed Label steps on all CDUs.
3. Verify that SmartPerf Learning is turned
on all FMSs until performance values are as desired.
At that point, turn
SmartPerf on all FMSs. Leaving SmartPerf
for an extended period can

cause a divergence in the performance data saved in the individual FMSs, causing problems