What it covers
The system components and parts which use magnetic, gyroscopic, and inertia forces to indicate an aircraft attitude and direction. Use this code for reports with insufficient information to file in JASC codes 3421 through 3425. Includes such items as the inertial reference system (IRS), etc.
Service difficulty reports · 772
Reports filed under 3420, newest first.
| 1995 | 17 |
|---|---|
| 1996 | 18 |
| 1997 | 20 |
| 1998 | 43 |
| 1999 | 51 |
| 2000 | 44 |
| 2001 | 36 |
| 2002 | 23 |
| 2003 | 42 |
| 2004 | 64 |
| 2005 | 42 |
| 2006 | 34 |
| 2007 | 23 |
| 2008 | 16 |
| 2009 | 25 |
| 2010 | 21 |
| 2011 | 29 |
| 2012 | 22 |
| 2013 | 27 |
| 2014 | 23 |
| 2015 | 9 |
| 2016 | 15 |
| 2017 | 20 |
| 2018 | 16 |
| 2019 | 20 |
| 2020 | 8 |
| 2021 | 18 |
| 2022 | 8 |
| 2023 | 6 |
| 2024 | 7 |
| 2025 | 14 |
| 2026 | 11 |
SDR CALA2026100520099Adiru · faultyIRS RT FAULT FOLLOWING FIM 34-21 TASK 803, PERFORMED BITE TEST AND FAULT MESSAGES ATTATCHED IN IMAGES. REMOVED AND REPLACED R ADIRU REF. AMM TASK 34-21-01-000-801 AND TASK 34-21-01-400-801. INSTALLATION TEST PASSED.PARTS USED: 60-3421-9-0001,QTY :1 POS - 2 MFGSDR QR9R2026082600002Ahrs · failedAHRS FAIL FLT 1. TEST FLIGHT EVAL FOUND AHRS DISC APPEARED MULTIPLE TIMES DURING A 0.2 HOVER FLIGHT. OTHER INDICATIONS WERE AS FOLLOWS: "Y","R", AND "P" IN AMBER ON BOTH PFDS, AND "ROLRAT DIS" ON LANE 2 SCROLL PAGE. ALL OTHER INDICATIONS APPEARED NORMAL WITH TSDR VNAA2026080422201Iru · unserviceablePITCH FEEL FAULT STATUS MSG IN FLIGHT AND YD2 INOP, FMS 2 DISPLAYED IRS REVERTED LOST FO'S PFD INDICATION C/A REMOVED AND REPLACED IRU 2 IAW CRJ900 AMM 34-45-01-000/400-801-A01.
See all 772 reports