SB 196
SLINGSBY T67 · Service Bulletins
Overview
This Service Bulletin (SB 196) provides instructions for inspecting the propeller spinner support disc rubber condition on Slingsby T67 Firefly variants. It outlines the necessary inspections, compliance requirements, and corrective actions to ensure the safety and performance of the aircraft's propeller system.
- Applicable to Slingsby T67M, T67M-MkII, T67M200, and T67M260 variants.
- Inspect propeller blades for grooves and spinner support disc rubber condition.
- Compliance required within the next 5 flights after receipt of the bulletin.
- Two personnel required for approximately 6.25 hours of work.
- No changes to weight and balance or electrical load data.
- Use specified rubber and adhesive for replacements.
- Ensure proper safety procedures when working with adhesives.
- Document completion of the inspection in the airframe logbook.
Document
Source
Originally published by marshallgroup.com. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.
Document details
- Type ·
- Service Bulletins
- Year ·
- 2013
- File size ·
- 244 KB
- Publisher ·
- marshallgroup.com
- Language ·
- en
Specifications & performance
Extracted from this document.
Specifications
- Rubber section t67m mkii ·
- 0.65 meter
- Rubber section t67m200 260 ·
- 0.61 meter
What is the SB 196?
The SB 196 is a service bulletins for the SLINGSBY T67, dated 2013.
Where does the SB 196 come from?
This copy of the SB 196 was originally published by marshallgroup.com and is hosted on Sprinkle as a free, searchable reference copy.
What year was the SB 196 published?
The SB 196 — the SLINGSBY T67 service bulletins on file — is dated 2013.
Most owners only have the POH. Here's the essential set for the SLINGSBY T67.
- Pilot's Operating Handbook / AFM
- Checklist
- Maintenance Manual
- Parts Catalog (IPC)
- Systems & Wiring
- Service Bulletins on file
- Type Certificate (TCDS)
More SLINGSBY T67manuals & documents
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In this document
Effectivity
Applicable to Slingsby T67M, T67M-MkII, T67M200, and T67M260 Firefly variants.
Description
Details the inspection of propeller blades for grooves and assesses spinner support disc rubber condition.
Compliance
Inspect within the next 5 flights from receipt unless previous compliance has been achieved.
Maintenance Practices
Instructions for inspection and replacement of rubber, including safety warnings.
Materials
Specifies rubber and adhesive required for T67 variants.
Completion
Instructions for documenting the inspection in the airframe logbook.
Safety notes
- Do not attempt maintenance except in accordance with this Service Bulletin.
- Obey all warnings and cautions to avoid injury or equipment damage.
- Ensure Material Safety Data Sheets are available when working with adhesives.
- Use appropriate personal protective equipment when handling materials.
- Ensure engine bay is clean and clear of tools after inspection.
Full document text
MARSHALL OF CAMBRIDGE AEROSPACE LTD THE AIRPORT, CAMBRIDGE, ENGLAND SERVICE BULLETIN SB 196 Jan 2013 Page 1 of 9 Issue 2 INSPECTION OF SLINGSBY T67 FIREFLY PROPELLER SPINNER SUPPORT DISC FOR RUBBER CONDITION 1. A. EFFECTIVITY PLANNING INFORMATION Slingsby T67M, T67M-MkII, T67M200 and T67M260 Firefly Variants B. CONCURRENT REQUIREMENTS None C. REASON A maintenance company noted grooves in the root of the aircraft’s propeller blades when performing the 150 flying hour check on a T67M200. Further investigation noted movement in the spinner cone and when the spinner was removed, it was seen that the spinner cone’s supporting disc rubber had broken free, allowing excessive movement of the spinner cone, such that the cone contacted the blade roots creating grooves. Issue 2 adds reference to DOI T67G-927 in section 1K and section 3C (6) after a request from a customer for a repair procedure. It also amends minor grammatical errors. D. DESCRIPTION This Service Bulletin (SB) details the inspection of the propeller blades for grooves and assesses their acceptability. The SB also details inspection of the spinner support disc rubber condition, security and replacement as applicable. This Service Bulletin also details the repetitive inspections required. E. COMPLIANCE Inspect within the next 5 flights from the receipt date of this Service Bulletin unless SB 196 issue 1 has already been accomplished. F. APPROVAL Marshall Aerospace EASA Design Organisation Approval No EASA.21J.181 G. MANPOWER Two persons – approximate man-hours per person (waiting time, e.g. drying times, not included) as follows: Preparation 1 Inspection / Rectification 1 Testing 2.5 (Add approximately 5 hrs if propeller balancing required) Re-assembly 1.5 Records 0.25 Total 6.25 11.25 (if propeller balancing required) MARSHALL AEROSPACE SERVICE BULLETIN SB 196 Jan 2013 Page 2 of 9 Issue 2 H. WEIGHT AND BALANCE No change. I. ELECTRICAL LOAD DATA No change. J. SOFTWARE SUMMARY Not Applicable. K. REFERENCES Marshall Slingsby Advanced Composites (MSAC) Firefly T67M, T67M-MkII, T67M200 or T67M260 Maintenance Manual - as applicable to aircraft type. Hoffmann Propeller Manuals HOV72 (T67M and T67M-MkII) or KV 123 (T67M200 and T67M260) Repair of T67 Spinner Cone for SB 196 Compliance DOI T67G-927 L. OTHER PUBLICATIONS AFFECTED Marshall Slingsby Firefly IPC. M. INTERCHANGEABILITY/INTERMIXABILITY OF PARTS Not Applicable. 2. A. MATERIAL – PRICE AND AVAILABILITY MATERIAL INFORMATION Not Available. B. INDUSTRY SUPPORT INFORMATION Not Applicable. C. MATERIAL NECESSARY FOR EACH AIRCRAFT T67M and T67M-MkII aircraft: Rubber section 126-15-116 (0.65 meter) and Adhesive 126-51-211 T67M200 and T67M260 aircraft: Rubber section 126-15-131 (0.61 meter) and Adhesive 126-51-211 PTFE tape 121-03-024 as required D. MATERIAL NECESSARY FOR EACH SPARE Not Applicable. MARSHALL AEROSPACE SERVICE BULLETIN SB 196 Jan 2013 Page 3 of 9 Issue 2 E. RE-IDENTIFIED PARTS Not Applicable. F. TOOLING AND AVAILABILITY Not Applicable. 3. A. MAINTENANCE PRACTICES ACCOMPLISHMENT INSTRUCTIONS WARNING DO NOT ATTEMPT TO MAINTAIN, REPAIR, REBUILD, OVERHAUL OR REMANUFACTURE THIS UNIT OR ANY OF ITS COMPONENTS EXCEPT IN STRICT ACCORDANCE WITH THE METHODS, TECHNIQUES AND PRACTICES SPECIFIED IN THIS SERVICE BULLETIN. WARNING OBEY ALL WARNINGS, CAUTIONS AND MAINTENANCE PRACTICES. IF YOU DO NOT OBEY THIS WARNING THERE IS A RISK OF INJURY TO PERSONNEL AND/OR DAMAGE TO THE EQUIPMENT. WARNING WHILST WORKING IN THE ENGINE BAY OBSERVE ALL STANDARD PROCEDURES FOR WORKING ON THE ENGINE AS PER T67M, M-MkII, 200 & 260 FIREFLY MAINTENANCE MANUALS SECTION 6 FIGURE 6-1. WARNING (1) Observe all safety procedures. ENSURE WHILST WORKING WITH ADHESIVES AND OIL THAT THE MATERIAL SAFETY DATA SHEETS (MSDS) ARE AVAILABLE AND ARE WORKED TO. ENSURE MANUFACTURERS APPLICATION AND REMOVAL PROCEDURES ARE ADHERED TO. ENSURE USE IN WELL VENTILATED AREA, USE AWAY FROM IGNITION SOURCES. ENSURE APPROPRIATE PERSONNEL PROTECTIVE EQUIPMENT (PPE) IS USED, E.G. GLOVES, EYE PROTECTION, PROTECTIVE CLOTHING. (2) All engineering and local procedures are to be observed whilst embodying this Service Bulletin. (3) After inspection ensure aircraft’s engine bay is clean and clear of tools and miscellaneous equipment. MARSHALL AEROSPACE SERVICE BULLETIN SB 196 Jan 2013 Page 4 of 9 Issue 2 B. PREPARATION Prior to proceeding, ensure that the Service Bulletin has been read in its entirety and is understood. (1) Gain access to the engine bay in accordance with (iaw) aircraft Maintenance Manual paragraph 6.3.1 Engine Cowling Removal. (2) Remove spinner iaw aircraft maintenance manual paragraph 8.1.1 (3). C. INSPECTION (1) Inspect the roots of the propeller blades, for spinner contact, Figure 1 shows. (2) For any blade showing contact, evidenced by paint removal down to the blade structure, the propeller is to be removed and returned to Hoffmann or Hoffmann approved agent, for further inspection/repair. Remove propeller iaw aircraft Maintenance Manual paragraph 8.1.1 (4), (5) plus for the T67M260 paragraph (6). (3) Check condition of spinner support disc rubber for perishing (cracks and brittleness), rubber bond integrity to the support disc and rubber wear, Figure 2 shows (T67M200 and T67M260). NOTE The spinner disc rubber is attached to the Hoffmann propeller’s support disc, for T67M200 and T67M260 aircraft, and for the T67M and T67M-MkII the rubber is attached to the spinner’s support disc. (4) Should rubber exhibit any defect as described in (3) above it should be removed and replaced. NOTE For T67M and T67M-MkII; use MSAC code number 126-15-116, and for T67M200 and T67M260; use MSAC code number 126-15-131. Ensure surfaces are free from rubber and adhesive, degrease and remove any dust from surfaces to be bonded. Apply adhesive 126-51-211 (3M PR 1300L) iaw manufacturer’s instructions and allow to cure.
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(5) If applicable, fit propeller iaw aircraft Maintenance Manual paragraph 8.1.1, reverse order of removal; note comment in paragraph 8.1.2. (6) Replace spinner in reverse order of removal, iaw aircraft Maintenance Manual paragraph 8.1.1 (3). The clearance between the spinner blade cut-outs to the propeller blades should be 3 mm. If less than 3 mm then spinner is to be modified until 3 mm clearance is achieved. Procedure for achieving 3mm clearance is detailed in DOI T67G-927 and is obtainable from MSAC. The clearance is to be checked by applying a moderate load to the extreme front of the spinner. There should be no movement in the spinner relative to propeller. If in doubt consult MSAC. NOTE If the spinner moves when applying load, following fitting of replacement rubber, then pack out the rubber with PTFE tape 121-03-024 (Ref Figure 3). (7) Ensure at each pre flight and post flight inspections, as published in the Pilot’s Operating Handbook and aircraft Maintenance Manual respectively, that the propeller blades show no sign of rubbing. MARSHALL AEROSPACE SERVICE BULLETIN SB 196 Jan 2013 Page 5 of 9 Issue 2 (8) At each 50 flying hour interval, check spinner for movement iaw paragraph (6) above. If movement is detected, remove spinner and check spinner support disc rubber iaw paragraph (3) above. D. MODIFICATION Not applicable. E. TESTING (1) Refer to aircraft Maintenance Manual paragraph 8.1.2. (2) Replace cowling iaw aircraft Maintenance Manual paragraph 6.3.1 Engine Cowling Installation. F. COMPLETION (1) Annotate airframe logbook, or aircraft record, iaw local requirements, with SB 196 carried out. (2) On completion of initial inspection please complete the attached form at Annex A and return it to the address provided. (3) For any replaceable parts or materials contact Marshall-Slingsby Product Support Department contact details as below: Gemma Hodgson Marshall-Slingsby Advanced Composites Ings Lane Kirkbymoorside North Yorkshire England YO62 6EZ Tel. no. +44 (0) 1751 432474 Email: gemma.hodgson@marshall-slingsby.com MARSHALL AEROSPACE SERVICE BULLETIN SB 196 Jan 2013 Page 6 of 9 Issue 2 Figure 1 Areas of inspection MARSHALL AEROSPACE SERVICE BULLETIN SB 196 Jan 2013 Page 7 of 9 Issue 2 Figure 2 De-bonded rubber strip (T67M200) MARSHALL AEROSPACE SERVICE BULLETIN SB 196 Jan 2013 Page 8 of 9 Issue 2 Fig 3 Spinner disc rubber position MARSHALL AEROSPACE SERVICE BULLETIN SB 196 Jan 2013 Page 9 of 9 Issue 2 SB 196 ANNEX A INSPECTION OF SLINGSBY T67 FIREFLY PROPELLER SPINNER SUPPORT DISC FOR RUBBER CONDITION This form is to be completed and submitted to the address below. Mr M J Rutter Airworthiness Co-ordinator C/O Marshall-Slingsby Advanced Composites Ings Lane Kirkbymoorside North Yorkshire England YO62 6EZ Tel. No. +44 (0)1751 432474 Fax. No. +44 (0)1751 433016 E-mail: mike.rutter@marshall-slingsby.com Table 1 Aircraft works number SB 196 carried out Total Flight Hours Details of rubber condition Reporters contact details i.e. Name, Address, e-mail, telephone etc Owner’s details