Page 40 - Volume 13 Number 10

= The mechanic must complete all of the instructions in the service document, including the intent therein.
= The mechanic must correctly use and install all applicable parts supplied with the service document kit. Only with written authorization from Textron Aviation can substitute parts or rebuilt parts be used to replace new parts.
= The mechanic or airplane owner must use the technical data in the service document only as approved and published.
= The mechanic or airplane owner must apply the information in the service document only to aircraft serial numbers identified in the Effectivity section of the document.
= The mechanic or airplane owner must use maintenance practices that are identified as acceptable standard practices in the aviation industry and governmental regulations.
No individual or corporate organization other than Textron Aviation is authorized to make or apply any changes to a Textron Aviation-issued service document or flight manual supplement without prior written consent from Textron Aviation.
Textron Aviation is not responsible for the quality of maintenance performed to comply with this document unless the maintenance is accomplished at a Textron Aviation-owned Service Center.
From Multi-Engine Turboprop Communiqué # ME-TP-0016
Date: September 2019
ATA 34 – Phase 3 B200GT and B300 King Air Pro Line
Fusion Radar RTA-4122 Non-Volatile Memory Reset
Phase 3 Fusion aircraft equipped with the Collins Aerospace MultiScan RTA-4112 radar have internal
non-volatile memory (NVM) which captures component diagnostic data.
The NVM in the Radar Transmitter Antenna (RTA) currently has the potential to lock up when 991 entries are stored. When this lock up occurs, the radar will display a continuous WXR Fault and will need to be returned to Collins for the NVM to be cleared. Collins estimates that in normal operation the limit could be reached in approximately 330 flight legs. Collins has identified the root cause and will release Service Bulletin (SB) 8 for the RTA in mid-2020 to correct the issue. In the interim, to prevent the NVM from reaching this limit, Collins has released information document (IDOC) 0168-19 titled “Information and Usage of the RTA-41XX NVM Erasure Tool.” The IDOC provides procedures and lists equipment which will allow the NVM to be cleared in the field prior to it reaching its limit precluding removal of the RTA for clearing. Textron Aviation is recommending that aircraft with RTA-4122 have the NVM cleared during routine inspections until SB 8 is released and incorporated. The RTA-4122 was installed in production as standard equipment beginning at FL-1161 and was a factory option on BY-324 and after. Any phase 3 B200GT, B200CGT, B300, B300C aircraft could have also had the radar installed post-delivery.
ATA 52 – Cabin Door Channel Part Number 50-430043- 1329 Cracking
All
\[Textron Aviation\]
continues to receive
reports that chan-
nel part number
50-430043-1329 is
cracking. This chan-
nel is located at the
cabin door hinge as shown in the picture above. When this channel cracks it causes damage to the hinge. This condition is more prominent on airplanes equipped with only one handrail cable although it can also occur on airplanes with the dual cabin door handrail if the cables are not rigged so that both cables can share the load of
passengers using the door.
Textron Aviation has developed a channel made from heavier material that can be used to replace the current channel. The procedure and part number of the new channel can be found in the King Air Structural Inspection and Repair Manual Chapter 52-00-01.
The information provided in this column may be abbreviated for space purposes. For the entire communication, go to www. txtavsupport.com.
OCTOBER 2019
Cabin Door Hinge and Channel Location
38 • KING AIR MAGAZINE