July 27, 2025Jul 27 If IRS alignment Cessna Citation X (MSFS2020) fails to align. The downloaded Citation X pdf checklist says: Before Start STBY PWR Switch: ON EMERG LT Switch: ARM BATT 1 and BATT 2 Switches: ON EICAS POWER Switch: ON APU START: REFER TO APU START CHECKLIST AVIONICS POWER Switch: ON IRS: ALIGN/NAV FMS: INSERT PRESENT POSITION This fails to complete the IRS alignment. Stays in Align mode indication. The Downloaded Citation X tutor video reverses the last two steps. So: AVIONICS POWER Switch: ON FMS: INSERT PRESENT POSITION IRS: ALIGN, wait for Align light to extenguish (based on your config setting in EFB) , then NAV Now the IRS aligns properly. Best Regards, Vaughan Martell PP-ASEL KDTW
July 27, 2025Jul 27 IRS: ALIGN/NAV FMS: INSERT PRESENT POSITION This should be in reverse. First FMS: insert present position then IRS ALIGN. Life time flight sim enthusiast, current airplane owner 172P (past C182F). FAA CP/IR ASEL/AMEL, FI ASELMy System: AMD Ryzen 9 9950X3D , MSI X870 GAMING PLUS, 64G RAM, ASUS RTX5090, 4T SSDPut my hands on (pic/dual/given)7GCAA, 8KCAB, BE24, BE76, BE35-C33, BE35, C150, C152, C172B/N/P/R/SP, 182F, M20E,M20C, M20J, AT6(SNJ4), PA28-140,PA28-151, PA28-161,PA28-181,PA28RT-201,PA28R-180/201T, PA24-250, PA32-300R, PA44, AC114, YAK-18T, YAK-52, SR22
July 27, 2025Jul 27 Author 1 minute ago, sd_flyer said: IRS: ALIGN/NAV FMS: INSERT PRESENT POSITION This should be in reverse. First FMS: insert present position then IRS ALIGN. What did I mention in my post? Best Regards, Vaughan Martell PP-ASEL KDTW
July 27, 2025Jul 27 Author 1 minute ago, sd_flyer said: IRS: ALIGN/NAV FMS: INSERT PRESENT POSITION This should be in reverse. First FMS: insert present position then IRS ALIGN. Which procedure steps were you following? Best Regards, Vaughan Martell PP-ASEL KDTW
July 27, 2025Jul 27 Author 35 minutes ago, DavidP said: You need to initialise your position before selecting Align. Which procedure steps were you following? Best Regards, Vaughan Martell PP-ASEL KDTW
July 27, 2025Jul 27 3 minutes ago, vonmar said: Which procedure steps were you following? DC power on APU master ON, APU start after APU started, APU generator on STANDBY power on AVIONIC POWER ON (two switches) FMS position init LOAD IRS align, until "alight" extinguish then NAV Life time flight sim enthusiast, current airplane owner 172P (past C182F). FAA CP/IR ASEL/AMEL, FI ASELMy System: AMD Ryzen 9 9950X3D , MSI X870 GAMING PLUS, 64G RAM, ASUS RTX5090, 4T SSDPut my hands on (pic/dual/given)7GCAA, 8KCAB, BE24, BE76, BE35-C33, BE35, C150, C152, C172B/N/P/R/SP, 182F, M20E,M20C, M20J, AT6(SNJ4), PA28-140,PA28-151, PA28-161,PA28-181,PA28RT-201,PA28R-180/201T, PA24-250, PA32-300R, PA44, AC114, YAK-18T, YAK-52, SR22
July 27, 2025Jul 27 Author 4 minutes ago, sd_flyer said: DC power on APU master ON, APU start after APU started, APU generator on STANDBY power on AVIONIC POWER ON (two switches) FMS position init LOAD IRS align, until "alight" extinguish then NAV Where did you get those steps from? Was it a procedure that came with the FFX CitationX? "AVIONIC POWER ON (two switches)" Is actually one switch? Best Regards, Vaughan Martell PP-ASEL KDTW
July 27, 2025Jul 27 Interesting to see the various differences here. Quote You need to initialise your position before selecting Align. Not necessarily what I do at work... typically, though, after the IDENT page I'll go to POS INIT and once the GPS position displays select that. Then off to do whatever else while the alignment process runs. Failure to do so just means at the end of the alignment process you'll have a flashing ALIGN annunciator on the IRS until you enter an appropriate aircraft position. Quote AVIONIC POWER ON (two switches) Early aircraft (prior to around S/N 101 or so? don't recall) have two switches, one EICAS, one AVIONICS. That's possibly the source of the referenced checklist. I've been told but never found supporting information that the IRS in the actual aircraft is more accurate if one uses ALIGN and then when NAV RDY appears go to NAV. Lots of crews just go straight to NAV and it'll align just fine. Haven't bothered to purchase this aircraft so I've no idea if the model will do so. Typical alignment times at the latitudes I fly are 5-6 minutes.
July 27, 2025Jul 27 1 hour ago, vonmar said: Where did you get those steps from? From being an airplane owner for over two decades! LOL I have my thing about draining battery on avionics unless aux power is hooked up or engine/APU is running. By "avionic power" I meant those two switches: Life time flight sim enthusiast, current airplane owner 172P (past C182F). FAA CP/IR ASEL/AMEL, FI ASELMy System: AMD Ryzen 9 9950X3D , MSI X870 GAMING PLUS, 64G RAM, ASUS RTX5090, 4T SSDPut my hands on (pic/dual/given)7GCAA, 8KCAB, BE24, BE76, BE35-C33, BE35, C150, C152, C172B/N/P/R/SP, 182F, M20E,M20C, M20J, AT6(SNJ4), PA28-140,PA28-151, PA28-161,PA28-181,PA28RT-201,PA28R-180/201T, PA24-250, PA32-300R, PA44, AC114, YAK-18T, YAK-52, SR22
July 27, 2025Jul 27 Author 8 minutes ago, sd_flyer said: From being an airplane owner for over two decades! LOL I have my thing about draining battery on avionics unless aux power is hooked up or engine/APU is running. By "avionic power" I meant those two switches: Actually, where did you get these steps from for the FFX CitationX? DC power on APU master ON, APU start after APU started, APU generator on STANDBY power on AVIONIC POWER ON (two switches) FMS position init LOAD IRS align, until "alight" extinguish then NAV Edited July 27, 2025Jul 27 by vonmar Best Regards, Vaughan Martell PP-ASEL KDTW
July 27, 2025Jul 27 2 minutes ago, vonmar said: Actually, where did you get these steps from for the FFX CitationX? DC power on APU master ON, APU start after APU started, APU generator on STANDBY power on AVIONIC POWER ON (two switches) FMS position init LOAD IRS align, until "alight" extinguish then NAV I literally answered to you above! It's my way using tp power up and align IRS FFX C750 Life time flight sim enthusiast, current airplane owner 172P (past C182F). FAA CP/IR ASEL/AMEL, FI ASELMy System: AMD Ryzen 9 9950X3D , MSI X870 GAMING PLUS, 64G RAM, ASUS RTX5090, 4T SSDPut my hands on (pic/dual/given)7GCAA, 8KCAB, BE24, BE76, BE35-C33, BE35, C150, C152, C172B/N/P/R/SP, 182F, M20E,M20C, M20J, AT6(SNJ4), PA28-140,PA28-151, PA28-161,PA28-181,PA28RT-201,PA28R-180/201T, PA24-250, PA32-300R, PA44, AC114, YAK-18T, YAK-52, SR22
July 27, 2025Jul 27 Author 20 minutes ago, sd_flyer said: I literally answered to you above! It's my way using tp power up and align IRS FFX C750 Ok, so you are using your own procedure. Maybe that is why in another post you could not get the IRS out of Align mode. https://www.avsim.com/forums/topic/675841-flightfx-cessna-750-citation-x-released/page/14/ Posted yesterday at 02:15 PM "Does anyone has a problem when INS doesn't align in certain airports?" See: Before Start STBY PWR Switch: ON EMERG LT Switch: ARM BATT 1 and BATT 2 Switches: ON EICAS POWER Switch: ON APU START: REFER TO APU START CHECKLIST AVIONICS POWER Switch: ON IRS: ALIGN/NAV FMS: INSERT PRESENT POSITION Edited July 27, 2025Jul 27 by vonmar Best Regards, Vaughan Martell PP-ASEL KDTW
July 27, 2025Jul 27 Seems to work in both ways for me, no matter the order between the IRS ALIGN/NAV and INSERT PRESENT POSITION actions. Cheers, Ed MSFS2020 Steam // Rig: Corsair Graphite 760T Full Tower - ASUS MBoard Maximus XII Hero Z490 - CPU Intel i9-10900K - 64GB RAM - MSI RTX2080 Super 8GB - [1xNVMe M.2 1TB + 1xNVMe M.2 2TB (Samsung)] + [1xSSD 1TB + 1xSSD 2TB (Crucial)] + [1xSSD 1TB (Samsung)] + 1 HDD Seagate 2TB + 1 HDD Seagate External 4TB - Monitor LG 29UC97C UWHD Curved - PSU Corsair RM1000x // Thrustmaster FCS & MS XBOX Controllers
July 27, 2025Jul 27 Author 7 minutes ago, edpatino said: Seems to work in both ways for me, no matter the order between the IRS ALIGN/NAV and INSERT PRESENT POSITION actions. Are you starting from cold and dark? Which checklist (or steps) are you using? I would like to try the same. Best Regards, Vaughan Martell PP-ASEL KDTW
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