Iru
46 failure reports named the iru in the last ten years, 188 since 1995, most often on the Boeing 767; the condition most often found was "faulted". 6 FAA approvals let 1 company make a replacement iru, Innovative Solutions and Support INC holding the most (6).
Reports by year
Reports by year, as a table
| reports | |
|---|---|
| 1995 | 5 |
| 1996 | 4 |
| 1997 | 3 |
| 1998 | 1 |
| 1999 | 2 |
| 2000 | 5 |
| 2001 | 2 |
| 2002 | 8 |
| 2003 | 8 |
| 2004 | 7 |
| 2005 | 12 |
| 2006 | 18 |
| 2007 | 5 |
| 2008 | 6 |
| 2009 | 13 |
| 2010 | 11 |
| 2011 | 9 |
| 2012 | 5 |
| 2013 | 6 |
| 2014 | 4 |
| 2015 | 8 |
| 2016 | 3 |
| 2017 | 7 |
| 2018 | 8 |
| 2019 | 3 |
| 2020 | 2 |
| 2021 | 3 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 6 |
| 2025 | 6 |
| 2026 | 6 |
Which system the reports file it under last ten years
Reports by system, as a table
| reports | |
|---|---|
| Instruments and avionics | 44 |
| Electrical power | 1 |
| Landing gear | 1 |
Models most often reporting it last ten years
How it failed the condition found, last ten years
Conditions found, as a table
| reports | |
|---|---|
| faulted | 11 |
| failed | 9 |
| faulty | 6 |
| malfunctioned | 6 |
| out of alignment | 6 |
| damaged | 1 |
| inaccurate | 1 |
| incorrect | 1 |
| inoperative | 1 |
| shorted | 1 |
Approved replacement parts 6 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a iru and sell it as an approved part for the models named. These are the companies holding such approvals for a iru:
For these models most: Boeing 757 (6), Boeing 767 (4), Boeing 747 (2).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Innovative Solutions and Support INC | IRU (Inertial Reference Unit) HG1050AC16 | S242T101-122 | The Boeing Company 747-400F Series, 747-8 Series, 747-8F Series | 2025-05-20 | current |
| Innovative Solutions and Support INC | IRU (Inertial Reference Unit) HG1050AE16 | S242T101-124 | The Boeing Company 747-400F Series, 747-8 Series, 747-8F Series | 2025-05-20 | current |
| Innovative Solutions and Support INC | IRU (Inertial Reference Unit) HG1050AC16 | S242T101-122 | The Boeing Company 757-200 Series, 757-200CB Series,... | 2025-03-20 | current |
| Innovative Solutions and Support INC | IRU (Inertial Reference Unit) HG1050AE16 | S242T101-124 | The Boeing Company 757-200 Series, 757-200CB Series,... | 2025-03-20 | current |
| Innovative Solutions and Support INC | IRU (Inertial Reference Unit) HG1050AC16 | S242T101-122 | The Boeing Company 757-200 Series, 757-200CB Series,... | 2024-12-23 | current |
| Innovative Solutions and Support INC | IRU (Inertial Reference Unit) HG1050AE16 | S242T101-124 | The Boeing Company 757-200 Series, 757-200CB Series,... | 2024-12-23 | current |
Sources: the FAA's service difficulty reports since 1995 (a report is a part that failed and was fixed, as filed by an airline, repair station or owner; the count shows reporting as much as reliability) and the parts manufacturer approvals in the FAA's Dynamic Regulatory System. The part name is the reporters' and the approval holders' own words, reduced to the first plain words so that spellings meet.