My guess is that (unless Garmin and Aspen did a truly crap design) once an autopilot is set up for one of these boxes, it will never need its pitch/roll nulls re-adjusted. The emulation could be done “totally precisely” but if an autopilot has been previously calibrated for say one KI256 and then it is used with the GAD43, it could be out just the same. (It’s quite a fun thing to design I thought about doing it for the SG102 and getting an FAA STC for it – for use as a backup pitch/roll source for the KFC autopilots. I think these products take in ARINC429 pitch/roll data (from an AHRS gyro which generates ARINC429 pitch/roll – like my Sandel SG102) and emulate an LVDT. But others are happy with them, so clearly this varies.ĪFAIK the GAD43 (and also Aspen’s EA100 which does the same job for their EFD1000) just emulates the two (pitch and roll) pickoff coils of the KI256. In my experience, the German firm mentioned has an “interesting” attitude to people who want to give them money – which I find highly unattractive. The servos ought to last 1000-2000hrs on the KFC200. The KFC200 is normally a very good autopilot which doesn’t have the major servo burning-out issue of the KFC225. You can probably get a new/overhauled one from South East Aerospace in Florida Just be aware that there is no mandatory replacement at overhaul of either the motor or the tachometer, so you can get an overhauled servo with a knackered motor/tacho in it… They wanted 2500€ for repairing my KS-271A roll servo. The big ones like Autopilots Central might have. I don’t know how many US shops have the bench setup for this test. Sending the Autopilot Computer + KI-256 to USA isn’t really an option either. The last KI256 I had repaired in the UK took 6 months (luckily I have a spare on the shelf) and when it came the company said, in the best “British builder fait accompli” tradition, that they no longer can generate any paperwork for it! I am fed up with the crap service I have had in Europe. Castleberry Instruments for the KI256 they actually used to make them for Honeywell in the early days) is that they have the volume and the experience. The great thing about sending stuff to the USA (e.g. And I am not sure whether they can do it unless Harry Lees is personally present (they certainly could not last time I used them for this, c. Lees Avionics (Gama) can do it but they need the whole aircraft. No UK shop has it for 100% sure (I have been to them all). The autopilot adjustment needs to be done with the whole aircraft you can’t do just the autopilot on the bench unless you have a complete test harness for that particular model and I am damn sure no European shop will have that. There is no usable adjustment in the KI256.
#KFC 200 INSTALL MANUAL MOD#
If you get a KI256 Mod 11 and you get the KC225 adjusted for it then it is much less likely that you will ever need to do that adjustment again if you change the KI256 for another Mod 11 unit.
On the KFC225, these are stupidly located as trimpots (doubly stupidly on a digital product which could store values in an EEPROM) on the side of the KC225 computer, so to get to them you need the $1500 bus extender (which I have) so you can get a little adjustment screwdriver into these trimpots. The KI256 contains pitch and roll pickoff coils – essentially, for each of the pitch and roll axes, an LVDT which is excited with a waveform produced by the autopilot – and the autopilot contains adjustments for the variation in the signals which these produce. I know the KFC225 – I wrote this – and not the KFC200, but they are probably similar in these aspects. But it would be great to hear where you guys have found a good and maybe price reasonable repair station in Europe. So far I have brought all avionics part needing repair or Overhaul to the US.
+ Will the KI-256 Mod 11 do away with the need for calibration towards the KFC-200? Or is this only for the KFC-225? Is this an expensive solution? I thought one needed a big test suitcase to do this! Where would be the best place to do calibration? I see some members have bought a cabe to do this themselves. + Im located in the Boden-See(lake of Constance) area. + Is the calibration done in the Autopilot or in the KI-256? If the latter, could I have 2 different KI-256 calibrated for quick exchange? The KCS-55A seems to be easy to replace with “new” parts, but the Attitude/Flight Director KI-256 needs to be re-calibrated to fly the autopilot correctly. I own a P210 with a KFC-200 autopilot and the KI-256.Īt the moment Im looking into keeping the old setup and getting Cheaper replacements vs Overhauling vs Glass.
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