TCM SB10-1
Cessna 400 Corvalis TT · Systems Description
Overview
This document, TCM SB10-1, serves as a service bulletin specifically for the Cessna 400 Corvalis TT equipped with the Continental TSIO-550-C engine. It outlines critical inspection procedures and maintenance recommendations for the aircraft's transition assembly and exhaust system components. The bulletin emphasizes the importance of regular inspections to ensure the integrity and safety of the aircraft's systems, particularly focusing on potential issues with Inconel parts, which require careful examination due to their susceptibility to internal corrosion. This document is essential for maintenance personnel and pilots who are responsible for the upkeep of the Cessna 400 Corvalis TT.
- Perform a 25-hour inspection on the transition assembly after maintenance history.
- Conduct a 50-hour visual inspection of components and joints.
- Inspect transition assembly for blisters or cracks, especially at the bypass.
- Inconel parts require careful inspection due to internal corrosion risks.
- Use complete assemblies for slip fit stacks to ensure joint integrity.
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
- 161 KB
- Publisher
- www.acornwelding.com
Most owners only have the POH. Here's the essential set for the Cessna 400 Corvalis TT.
- Pilot's Operating Handbook / AFM
- Checklist
- Maintenance Manual
- Parts Catalog (IPC)
- Systems & Wiring
- Service Bulletins
- Type Certificate (TCDS)
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In this document
Inspection Procedures
The document specifies a 25-hour inspection for the transition assembly, particularly after any maintenance history. A 50-hour visual inspection is also recommended for components, joints, and attachment points, with reference to TCM service bulletins for detailed guidance.
Transition Assembly Checks
Inspect the transition assembly for blisters or cracks, especially starting at the bypass. Ensure that joints exhibit freedom of movement and are not distorted.
Inconel Component Inspection
Inconel parts, while superior in strength, are more challenging to inspect due to potential internal corrosion. The carbon buildup inside the muffler must be removed for a thorough inspection, and any pinhole welds will result in a failed internal inspection.
Part Numbers and Descriptions
The document lists various part numbers and descriptions for components related to the exhaust system, including elbows, risers, headers, and gaskets. These parts are crucial for maintaining the integrity of the exhaust system.
Safety notes
- Inconel components may corrode internally without visible signs; thorough inspection is critical.
- Welds developing pinholes will result in a failed inspection.
Full document text
TCM SB10-1 Ensure Transition Tie rod and bushing are able to move. Check transition for cracking at flange and in body. 25 hour inspection: Initial inspection on systems with prior maintenance history. Inspect Transition assembly after installing new transition. 50 hour visual inspection: Components, joints and attachment points. Reference TCM SB for more details. Cessna 400 Corvalis TT With Continental TSIO-550-C Engine Inspect transition for blisters or cracks starting at the bypass. Inspect joints for freedom of movement and distortion. Some of the parts for this aircraft are Inconel. Although Inconel is a far superior metal, it is more difficult to inspect. Inconel tends to corrode from the inside without showing signs of flaking or bulging like stainless steel. The carbon on the inside of the muffler should be removed to properly inspect the component. If the welds are developing pinholes the component will not pass an internal inspection. Slip fit stacks should be ordered as a complete assembly to ensure good joint integrity with smooth slip fits. Item Part Number Description 657005 ELBOW ASSY RIGHT HAND 657007 RISER RIGHT HAND CENTER 657010 HEADER RIGHT HAND TEE ASSEMBLY 657006 ELBOW ASSY LEFT HAND 657008 RISER TEE LEFT HAND CENTER 657009 HEADER LEFT HAND TEE ASSEMBLY 657011 RISER ADAPTER 654331 CROSSOVER BYPASS ASSEMBLY 654321 HEADER BYPASS LEFT HAND 654329 TAILPIPE LEFT HAND 654411 HEATER 653337 CLAMP TAILPIPE TO TURBO 628260 GASKET 652456 GASKET WASTEGATE 636465 GASKET TURBO CHARGER 654333 TIE ROD LA71203000 ENGINE MOUNT 657005 ELBOW ASSY RIGHT HAND 657007 RISER RIGHT HAND CENTER 657010 HEADER RIGHT HAND TEE ASSEMBLY 657006 ELBOW ASSY LEFT HAND 657008 RISER TEE LEFT HAND CENTER 657009 HEADER LEFT HAND TEE ASSEMBLY 657011 RISER ADAPTER 654331 CROSSOVER BYPASS ASSEMBLY 654321 HEADER BYPASS LEFT HAND 654329 TAILPIPE LEFT HAND 654411 HEATER 653337 CLAMP TAILPIPE TO TURBO 628260 GASKET 652456 GASKET WASTEGATE 636465 GASKET TURBO CHARGER 654333 TIE ROD LA71203000 ENGINE MOUNT 1 2 3 4 5 6 7 8 9 10 11 12 - - - 13 - 12 11 10 1 4 5 3 6 7 9 2 12 7 8 13 (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. 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