Multi-Engine Turboprop Communiqué # ME-TP-001 Rev 1
Beechcraft King Air 250 · Parts Catalog
Overview
This document is a service bulletin for the Beechcraft King Air 250 and King Air 350, issued in November 2020. It provides critical updates and procedures related to various components and systems of these aircraft models. The bulletin includes information on placards, engine fire extinguisher connections, propeller de-ice boot protection circuit kits, and emergency exit door handle springs. It is intended for maintenance personnel and pilots who need to ensure the proper functioning and safety of the aircraft systems. The document emphasizes the importance of correct wiring and component installation to prevent malfunctions and ensure safety during operation.
- The King Air 250 placard does not have an official part number for replacement.
- Incorrect wiring of the engine fire extinguisher can lead to failure during an emergency.
- A kit for the propeller de-ice boot protection circuit is currently unavailable.
- A new spring option is available to improve the emergency exit door handle fit.
- Cleaning procedures for the low-pitch solenoid are detailed to ensure proper function.
Document
Source
Originally published by tadistributors.com. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.
Document details
- Type
- Parts Catalog
- Year
- 2020
- Pages
- 5
- File size
- 373 KB
- Publisher
- tadistributors.com
Most owners only have the POH. Here's the essential set for the Beechcraft King Air 250.
- Pilot's Operating Handbook / AFM
- Checklist
- Maintenance Manual
- Parts Catalog (IPC)
- Systems & Wiring
- Service Bulletins
- Type Certificate (TCDS)
More Beechcraft King Air 250manuals & documents
- V-Speeds Reference for Beechcraft King Air 250V Speeds Reference
- HALO 250 Conversion for the King Air 200Performance Data
- Performance Data for the Beechcraft King Air 250Performance Data
- Airport Data SheetSpecifications
- 2016 King Air 250Specifications
- AIRPLANE FLIGHT MANUAL SUPPLEMENTPilot's Operating Handbook
- Raisbeck Performance Systems for the entire Beechcraft King Air FamilySystems Description
- King Air 250Flight Manual
- BEECHCRAFT KING AIR B-250 (B-200GT)Checklist
In this document
ATA 11 - King Air "250" and "350" Winglet Placard
This section discusses the replacement of the King Air "250" placard located on the winglets. It notes that the placard does not have an official part number and provides updated contact information for ordering replacements.
ATA 26 - Engine Fire Extinguisher Connections - Revisited
This section revisits the proper connections for the engine fire extinguisher wires to ensure correct operation. It outlines a procedure for testing the connections and emphasizes the importance of correct wiring to avoid malfunction during emergency situations.
ATA 30 - King Air 250 Propeller De-ice Boot Protection Circuit Kit
This section announces a kit related to the propeller de-ice boot protection circuit for the King Air 250. However, it notes that the kit is currently not available.
ATA 52 - Emergency Exit Door Handle Spring
This section addresses an issue with the emergency exit door handle on some King Air models. It provides a replacement spring option that offers better tension to keep the handle flush with the door.
ATA 61 - Additional Low Pitch Solenoid Cleaning
This section provides a step-by-step procedure for cleaning the low-pitch solenoid on the King Air 300/B300 series, emphasizing the importance of not disturbing the solenoid's position during maintenance.
Safety notes
- Caution should be exercised when attaching the airplane's wiring to the fire extinguisher squibs to avoid incorrect connections that could prevent the system from functioning properly.
Full document text
Issue: November 2020 Page 1 of 5 Communiqué # ME-TP-001 Rev 1 Multi-Engine Turboprop Communiqué Communiqué # ME-TP-001 Rev 1 Original Issued February 2017 Revision Issued November 2020 Revision Summary Revision 1 November 2020 ATA 11 King Air “250” and “350” Winglet Placard. ATA 30 King Air 250 Propeller De-Ice Boot Protection Circuit Kit ATA 00 - General Introduction Beechcraft and Hawker customers will notice a change in the formatting and document numbering of Model Communiqués. In an effort to streamline the brands, Textron Aviation is changing the airplane specific Model Communiqués to a broader grouping. For example, the previous King Air Model Communiqués are now the Multi-Engine Turboprop Communiqués (document reference number ME-TP-XXX). The Multi-Engine Turboprop (ME-TP-XXX) grouping applies to the King Air, Conquest I and II, and Beechcraft Commuter. The Single Engine Turboprop (SE-TP-XXX) grouping applies to the Caravan and Denali. Please note that because of this change, some communiqués may still only apply to one specific brand but will be sent to all airplanes that are covered by the Multi-Engine Turboprop heading. ATA 11 - King Air "250" and "350" Winglet Placard BY-122, BY-124 and after; BZ-1 and after; FL-1 and after, FM-1 and after The King Air "250" placard installed on the outboard side of the winglets does not have an official published part number. If the placard needs to be replaced please place your order for the replacement via email to parts_research@txtav.com . The transaction and billing for the placard will be made through the Technical Manual Distribution Center. Rev 1. The email address to order this placard has changed to teamturboprop@txtav.com Issue: November 2020 Page 2 of 5 Communiqué # ME-TP-001 Rev 1 ATA 26 - Engine Fire Extinguisher Connections - Revisited King Air Communiqué 2009-05 provided a caution in connecting the engine fire extinguisher wires to the squib to assure that the system operates as it should. This Communiqué read: "Caution should be exercised when attaching the airplane's wiring to the fire extinguisher squibs. The power wire should be connected to the terminal on the insulated end of the squib. The ground wire and the sensor should be connected to the side terminal. Incorrect attachment of the wiring can result in the cockpit fire extinguisher testing "OK" but not firing the squib and causing the circuit breaker to open in the event of the extinguisher button being pushed." We would like to emphasize that if the wires are connected incorrectly the extinguisher test would still test ok but if the flight crew needed to discharge the bottle the circuit breaker would open instead. We have included an additional illustration and picture showing the correct connections along with procedures to verify the correct installation of each extinguisher squib wire terminals. Procedures: 1. For each engine fire bottle squibs the 28 VDC power wire shall be verified by connecting a 28 VDC test light lead to the removed squib power wire terminal and the other test light lead to a good fuselage grounded part or screw in the wheel well. Next, press the fire wall valve switch to close the fire wall valve and arm the fire extinguisher. The Fire EXTINGUISHER PUSH light and the test light should both light with low intensity. Next, press and hold the left fire extinguisher switch. The Fire EXTINGUISHER PUSH light should extinguish and the test light should increase in intensity. (Test light consists of one 327 light bulb connected to two 22 gauge wires with alligator clips) Issue: November 2020 Page 3 of 5 Communiqué # ME-TP-001 Rev 1 2. The ground wires shall be tested by connecting one lead of an ohmmeter to the removed squib ground terminal wire on each squib and the other lead to a good fuselage grounded part / screw in the wheel well. The resistance value of the ground wire should be close to zero ohms. If either of the above do not test correctly further troubleshooting and repair is required. Note: We will submit a Publications Change Request to add this procedure to the appropriate manuals. Issue: November 2020 Page 4 of 5 Communiqué # ME-TP-001 Rev 1 ATA 30 - King Air 250 Propeller De-ice Boot Protection Circuit Kit BB-1509 and after; BL-141 and after; BY-1 and after; BZ-1 and after with Composite Propeller Blade STC SA02130SE Rev 1. The Kit announced in this article is not currently available. ATA 52 - Emergency Exit Door Handle Spring Due to issues on some King Air 300/B300 and 200/B200 Series aircraft where the emergency exit exterior door handle was reported as not fitting flush with the door, Textron Aviation has approved use of a spring that provides more tension for holding the handle flush. The original 100942H0016-16 spring can be replaced with a 100942H0016-12 that has less active coils and provides more tension for the door handle to stay flush. This spares option will be added to the applicable Illustrated Parts Catalog in future revisions. ATA 61 - Additional Low Pitch Solenoid Cleaning 300/B300 Series While troubleshooting the ground idle solenoid it is beneficial to clean any possible contaminants from the internal bore of the solenoid. Following find a step by step procedure to do so: Issue: November 2020 Page 5 of 5 Communiqué # ME-TP-001 Rev 1 Low-Pitch Solenoid Cleaning (1) Disconnect reversing lever attach bolt and remove plunger from solenoid. Note hardware stack up and retain hardware. (2) Clean plunger and solenoid bore with solvent. Do not use electrical contact cleaner. Caution: Do not disturb the solenoid or bracket position on the reversing cable. Any movement of the solenoid on the reversing cable will require rigging of the low pitch solenoid. Note: Do not apply any form of lubrication to the solenoid piston. (3) Install plunger and connect reversing lever attach bolt using retained hardware and new cotter pin. (4) Inspect wiring and associated linkage for damage, chafing, and attachment.
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(5) Perform ground run and verify that ground and flight idle torques are within parameters detailed in ground performance worksheet using applicable maintenance manual.