All posts by Todd's Time

F900 Troubleshooting

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

F900 Troubleshooting

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.

 

F900 Troubleshooting

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.

 

F900 Troubleshooting

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.

 

 

AircraftTroubleshooting

What is “Apple Butter” in jet fuel?

From Prist,  http://pristaerospace.com/hi-flash/FAQ/index.html#doAndNotDo

Prior to 1994, PRIST® was made to a Military Standard MIL-I-27686, which specified Ethylene Glycol Monomethyl Ether (EGME). Provisions were made to have this product certified as a pesticide with the EPA. This allowed the product to be advertised as having the ability to retard growth of microbes in aviation fuels. The correct term is for the additive is microbiostat (-stat means it controls or retards growth by putting the microbes in a static condition), it is not a true microbiocide, (-cide means it kills microbes).

With all of the new EPA requirements, it became economically prohibitive to certify the new DiEthylene Glycol Monomethyl Ether, DiEGME based additive as a pesticide. Summarizing the above, it is widely believed that DiEGME does have a retarding effect on microbial growth; however, we no longer officially claim this property for the PRIST® Hi-Flash™ Fuel Additive.

 

The airforce calls it “Apple Butter” or apple jelly

 

http://swri.org/3pubs/ttoday/spring03/pdfs/deadly-spread.pdf

 

http://www.swri.org/9what/releases/2002/apply_jelly.htm

 

http://www.aero-news.net/index.cfm?do=main.textpost&id=c0a3831b-82fa-4939-94be-4b2d6ca5fdd7