Beechcraft Duchess 76
Beechcraft 76 Duchess · Systems Description
Overview
This document serves as a service bulletin for the Beechcraft 76 Duchess, specifically addressing airworthiness directives (ADs) and inspection requirements for certain components. It outlines mandatory inspections for lower engine mount tubes and A-Frame parts, detailing part numbers and inspection intervals. The bulletin is crucial for maintenance personnel and operators of the Duchess to ensure compliance with safety regulations and to maintain the aircraft's airworthiness. It emphasizes the importance of regular inspections and potential upgrades to enhance structural integrity.
- Mandatory inspections for lower engine mount tubes every 100 hours until replaced with P/N 105-910019-1.
- A-Frame parts require a 100-hour inspection unless replaced with upgraded parts.
- Cracks found during inspections must be repaired immediately to maintain airworthiness.
- Part numbers for critical components are provided for maintenance personnel.
- Regular inspections are crucial for safety and compliance with airworthiness directives.
Document
Source
Originally published by www.acornwelding.com. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.
Document details
- Type
- Systems Description
- Year
- 2010
- Pages
- 1
- File size
- 171 KB
- Publisher
- www.acornwelding.com
Common. Rarer than 24% of the aircraft models we track.
Most owners only have the POH. Here's the essential set for the Beechcraft 76 Duchess.
- Pilot's Operating Handbook / AFM
- Checklist
- Maintenance Manual
- Parts Catalog (IPC)
- Systems & Wiring
- Service Bulletins
- Type Certificate (TCDS)
Free — save the 76 DUCHESS to your watchlist and track it in one place.
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- Duchess Multi-Engine Study GuideWiring Diagram
- FAQs Part 61 With Chg #21, 10/12/2004Type Certificate
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In this document
Airworthiness Directives
The document references AD 80-19-12 R1, which mandates inspections of lower engine mount tubes for cracks using dye penetrant. This inspection is required every 100 hours of operation until the mount is replaced with part number 105-910019-1. Additionally, AD 97-06-10 applies to A-Frame parts, requiring a 100-hour repetitive inspection unless replaced with upgraded parts.
Inspection Requirements
Inspections of the lower engine mount tubes must be performed every 100 hours of operation. If cracks are found during these inspections, repairs must be made. The A-Frame parts must also be inspected every 100 hours unless they have been replaced with newer versions that are deemed stronger.
Parts List
The document includes a parts list relevant to the Beechcraft 76 Duchess, detailing various components such as mufflers, risers for the engine cylinders, engine mounts, and carburetor air boxes. Each part is listed with its corresponding part number, which is essential for maintenance and repairs.
Safety notes
- Failure to comply with inspection requirements may lead to structural failure.
- Repairs must be conducted promptly if cracks are detected during inspections.
Full document text
Beechcraft Duchess 76 AD 80-19-12 R1 Applies to S/N's ME-1 thru ME-415. Inspect lower engine mount tubes with dye Penetrant and repair if cracks found. Inspections required every 100 hrs of operation till mount replaced with P/N 105-910019-1. AD 97-06-10 Applies to A-Frame part numbers 105-810023-67/68. 100 Hour repetitive inspection for cracks unless replaced with -75/76. Acorn Can also upgrade -75/76 to create a even stronger part. We recommend that -75/76 also be inspected at a 200 hour interval. 7 1 2 3 4 5 6 Item Part Number Description 8295-205 MUFFLER 8295-101 RISER RIGHT HAND FWD CYL #1 8295-103 RISER RIGHT HAND AFT CYL #3 8295-102 RISER LEFT HAND FWD CYL #2 8295-104 RISER LEFT HAND AFT CYL #4 105-810023-75 A FRAME LEFT HAND 105-810023-76 A FRAME RIGHT HAND CABIN ENTRY STEP LEFT HAND CABIN ENTRY STEP RIGHT HAND 77611 GASKET 209-250 SPRING KIT 169-910049-61 CARB AIR BOX LEFT HAND ENGINE 169-910049-63 CARB AIR BOX RIGHT HAND ENGINE 105-910010-79 ENGINE MOUNT 105-910019-1 ENGINE MOUNT J-9613-49 SHOCK MOUNT 2 REQ J-9613-50 SHOCK MOUNT 2 REQ VARIOUS SEAT BASE ASSY 1 2 3 4 5 6 - - 7 - - - - - - - - - 169-400005-912 169-400005-911 Exhaust Systems Engine Mounts Carb Air Boxes Shrouds Seats Piston Turbine Radial Vintage And More... L E L N E C C E X E (toll free) 1-888-388-8803 1-780-447-5955 Fax: 1-780-447-5980 sales@acornwelding.com parts@acornwelding.com www.acornwelding.com (toll free) 1-888-388-8803 1-780-447-5955 Fax: 1-780-447-5980 sales@acornwelding.com parts@acornwelding.com www.acornwelding.com ©2010 Acorn Welding Ltd.