Category Archives: F900 Troubleshooting

Holds Falcon 900 specific troubleshooting information

What would cause the slats to bang in and out on Stall 2 on a F900EX?

Missing ground in the latch circuit of the R3cm slat control relay.  This was a misswire from the Duncan installation of Aviation Partners winglets.

Original WDM

F900EX_028_WDM_SlatControl

 

Sh0p notes

 

F900 ex 028 slats problem

 

Aviation Partners wire mods

F90-0095S01REV-DVR–Slat Control Wiring Modification (1)

 

Aviation Partners Final disposition for F900ex 028

 

MR-F900EX-028-E Disposition

 

slat diagram large

SlatControl (1)

 

SlatControl

How do the carbon brakes age on a F900?

(these numbers were from Spring 2014 on bmb)

Warn Pack = 3.621
Shim = approx .45
Pin =  .354 below

Total pack is 4.92
Total wear before Shim is 1 inch.

Shim adds .45

Total life is 1.45

2000 landings

.000725 inch per landing.

29 dollars per landings per brake.

 

 

 

try this for the whole document

https://docs.google.com/spreadsheets/d/1uTJgjMsK7voB2dsyOmcUYxOQYy3BF0OQkD1glkY3DD4/pubhtml

 

This was from June 13, 2014, prior to the installation of shim in 1 and 4, and a new brake on 2

image

How do I call VQ-BZZ aircell?

All calls to Iridium phones are international calls.

If your phone allows international calls:

dial the Country code of the country you are calling from

from the USA: 011 88162345lastfour for the Cockpit.

from the USA: 011 88162345lastfour for the Cabin.

–OR– two stage dialing if that does not work

From inside USA/Canada 1.480.768.2500 &WaitPromt 88162345lastfour

From outside USA/Canada 1.011.480.768.2500 &WaitPromt 88162345lastfour

 VQBZZ_Upcalls

AircellAxxesIIQuickCallingGuide042010

remember to use AIRINC 429 label Label 204 for Baro Corrected altitude

 

CHECK SLIDE 417 for Dial Prefixes.

 

How do I comply the Honeywell ADC AD on a Falcon 900

EASA_AD_US-2012-26-15_1

 

HoneywellADCServiceBulliten

 

Here is now I would do it:

 

AD not applicable by reason of part number of installed equipment.

 

here’s why: EASA AD US-2012-26-15-1 effectivity cites Honeywell Service Bulletin ADM/ADC/ADAHRS–34–A01.

 

Honeywell Service Bulletin ADM/ADC/ADAHRS–34–A01, page 5,1.A. Effectivity…. details the applicable part number of the affected equipment.

 

The currently installed Air Data Computers: 7000700-647 do not appear on that table.

 

What are the symptoms for the Autopilot disconnect in VQ-BZZ, SPZ-8000

Smallest incoming squawk I can write is:

Intermittent disconnect of both AFCS’s.  VERY intermittent, in the air. most of the time a C/B re-set will bring one AP back.

On the most recent problem on the ground, the MT would engage either side, but YD engage would immediately cause AP FAIL.  That was followed by a RUDDER NOT CENTERED message.

http://toddheffley.com/wordpress/?p=5061 for an old set of codes after a encounter with wake turbulence. The only significant part of that deal is ” RUDDER MONITOR FAILURE B11 – run tests 1 and 5″  but that may still just be response to the wake turbulence.

 

Current, Clean, Menu 98 “Flight Fault Summary” codes not available for operational reasons.

San Antonio 19 feb 2014.

On 2 out of 10 system power-ups, the RAFCS failed ,

 

and the Menu 99 summary revealed:

 

I can duplicate this on the ground, if the engines are not running.

 

After all the dust settled this turned out to be a YD servo that would run in the extend direction OK, but it was intermittent in the retract direction.

If Hind Sight Was Foresight….you can actually see the problem in this picture

with the rudder pedals centered, after 2 or three AP YD servo tests, the rudder would end up an inch or so out of center.

Hindsight.

 

 

What are some disconnect Codes for F900 after wake turbulence?

an easy tutorial to get the codes is :

 

http://toddheffley.com/wordpress/?p=4245

 

Here are the codes after an encounter with wake turbulance 12 Feb 2014

 

Line 1 is A processor

Line 2 is B processor

here is the left decode

BZZ_12FEB_UNCOMMANDED ROLL_LEFT_SPZ-8000-Flight-Fault-Summary

 

DB61

A9 talks about was the Aircraft in turbulence at the time of the disconnect?

 

right

2014_fEB_12_RIGHT SPZ-8000-Flight-Fault-Summary

Run FZ  test 01 and Test 05

 

rudder ground maintenance test

Looks like the left computer was flying, and disconnected because of

AIL SERVO MOTION A9

or

RUDDER MONITOR FAILURE B11 – run tests 1 and 5

 

hmm.