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AVIONICS


Irwin – That depends upon the system model, the installation design and the equipment interface requirements. Initial estimates should be about two to 2.5 man-weeks. After installation familiarity, HAP systems may require as little as one man-week or less, with HFC systems requiring 1.5 man-weeks to two man-weeks. Helicopter Maintenance – Will system/LRU


programming be done in a particular manner, like via laptop computer or other device? Irwin – Not applicable to this system generally. However,


confi guration module changes could be conducted in the fi eld using a laptop, but will be controlled and programmed at our facility due to FAA approval process requirements. No programming or modifi cation should be necessary. The systems are customized during manufacture for the interface requirements of the equipment specifi ed in the order process, by the purchasing dealer, for the aircraft installation involved. Helicopter Maintenance – To what category is the


system certifi ed? Irwin – Autopilots are major aircraft modifi cations and


require STC certifi cations, which will cover the appropriate category of the aircraft model. The systems are TSO-approved to the latest FAA TSO for automatic fl ight guidance control systems (AFGCS), TSO C198, and the minimum operational performance standards (MOPS) RTCA DO-325. According to the FAA, these systems will be the fi rst full systems approved under these specifi cations, which now cover airplane


and helicopter systems.


Helicopter Maintenance – How will you address the issue of the same system but diff erent aircraft types? Irwin – Each certifi ed installation will be covered by an STC certifi cation. Variants of the same basic aircraft model can often be added to an STC based upon known or examined similarity, but each model approved for the installation will have been evaluated and identifi ed to the installer. Helicopter Maintenance – Can you share some lessons


learned? Irwin – For SAS/SCAS installations, we will provide


information we have learned about the safest and most effi cient way to remove and replace the control tubes for actuator installation, using the factory service Information as a guide. Additionally, actuator installation in the tubes, which will typically be done by Cool City Avionics, is part of the install kit, so the control tubes are an R&R exercise normally. The install kit includes the system wiring harness pre-wired into the rack with the RFI/EMI shield in place. It is only necessary to terminate the outer cable ends and “wring” the completed harness for errors. The cable and wire terminations are identifi ed. All of the cables are special, very supple, double- shielded and cut to length, with safety excess for routing variations. There you have the new and cool autopilot/SAS and SCAS systems from Cool City Avionics.


Hands Free Tracking


ACES Systems / TEC Aviation Division Ph. 865-671-2003 Fax. 865-675-1241 www.acessystems.com


22 HelicopterMaintenanceMagazine.com February | March 2014 Aces_TraX_V12I1_D_02.indd 1


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