What it covers
The components and system parts which control movement about the vertical axis. The directional control may be accomplished by changing the tail rotor blade angle, or by directed compressed air (i.e., NOTAR systems). Includes tail rotor control pedals, cables, rods, bellcranks, associated support brackets, compressed air ducts, valves, etc.
Service difficulty reports · 852
Reports filed under 6720, newest first.
| 1995 | 71 |
|---|---|
| 1996 | 42 |
| 1997 | 91 |
| 1998 | 100 |
| 1999 | 82 |
| 2000 | 51 |
| 2001 | 61 |
| 2002 | 82 |
| 2003 | 96 |
| 2004 | 37 |
| 2005 | 14 |
| 2006 | 25 |
| 2007 | 13 |
| 2008 | 16 |
| 2009 | 5 |
| 2010 | 3 |
| 2011 | 3 |
| 2012 | 3 |
| 2013 | 7 |
| 2014 | 6 |
| 2015 | 7 |
| 2016 | 2 |
| 2017 | 4 |
| 2018 | 2 |
| 2019 | 7 |
| 2020 | 5 |
| 2021 | 3 |
| 2022 | 5 |
| 2023 | 3 |
| 2024 | 1 |
| 2025 | 4 |
| 2026 | 1 |
SDR QR9R2026073000002Actuator · faultyDURING RUN-UP, YAW SAS AND BACKUP SAS CAUTIONS WOULD NOT GO OUT. DURING TROUBLESHOOTING, SHOT RESISTANCE BETWEEN PINS B AND C OF YAW SEMA AND FOUND THAT IT WAS BAD. ON AFCS BANNER UPON POWERING UP AP1 AND AP2, YAWEMA INVALID WAS PRESENT. REMOVED AND REPLACED SSDR 8LFA202506170003Bearing · failedTAIL ROTOR BLADE CONTROL PITCH LINK BEARING FAILED, THE INNER RACE SEPARATED FROM THE OUTER RACE, WHICH ALLOWED THE PITCH LINK ROD END TO MOVE AXIALLY ALONG THE ATTACHMENT HARDWARE WITHIN THE FORK OF THE TAIL ROTOR BLADE PITCH CONTROL FITTING.SDR 2025FA0000426Pitch Link · wornRAPID WEAR OF TAIL ROTOR PITCH LINK
See all 852 reports