What it covers
The navigation system which relies upon gyro platforms and accelerometers for its operation. Includes the control panel for the inertial navigation system; the instruments which receives their signal from the Inertial Navigation Unit (INU); and the unit containing the inertial platform and digital computer portion of the system. Use this JASC code for hardware components which do not have specific JASC codes assigned to them or when a system malfunction or failure occurs but the exact cause is not known. Typical parts are mode selector unit (MSU), control display unit (CDU), remote display unit (RDU), etc.
Service difficulty reports · 289
Reports filed under 3441, newest first.
| 1995 | 13 |
|---|---|
| 1996 | 7 |
| 1997 | 8 |
| 1998 | 11 |
| 1999 | 6 |
| 2000 | 7 |
| 2001 | 7 |
| 2002 | 13 |
| 2003 | 12 |
| 2004 | 10 |
| 2005 | 11 |
| 2006 | 12 |
| 2007 | 10 |
| 2008 | 20 |
| 2009 | 15 |
| 2010 | 10 |
| 2011 | 9 |
| 2012 | 5 |
| 2013 | 11 |
| 2014 | 7 |
| 2015 | 9 |
| 2016 | 2 |
| 2017 | 6 |
| 2018 | 11 |
| 2019 | 15 |
| 2020 | 7 |
| 2021 | 8 |
| 2022 | 21 |
| 2023 | 1 |
| 2024 | 1 |
| 2025 | 3 |
| 2026 | 1 |
SDR AALA202609023707Adiru · failedAIRCRAFT WAS GROUNDED: DURING CRUISE AT FL370 WITH AP A ENGAGED, IRS NR 1 FAULT. THIS RESULTED IN THE LOSS OF CA PFD, BOTH AUTOPILOTS, AUTOTHROTTLE FAIL, YD FAIL AND SPEED TRIM SYSTEM FAIL. AFTER STABILIZING THE AIRCRAFT, TRIED TO RE-ENGAGE AP'S BUT WERE UNSSDR 3EJA202510150001Ahrs · no discrepancyAHRS #1 FAILURE. #1 AHRS SYSTEM RESET, CNDSDR NACA2025081000002Iru · failedNUMBER 1 IRU FAULT ILLUMINATED, IRU FAILED. REMOVED AND REPLACED NR 1 IRU IAW AMM 34-28-31, OPS CHECK GOOD.
See all 289 reports