CIRRUS SR22T Service Bulletin SB 2X-71-17

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C I R R U S SR22T Service Bulletin SB 2X-71-17 Page 1 SR22T Serials 0001-0169, except 0019, 0027, 0047, 0097, 0126, 0127, 0135, 0138, 0139, 0144, 0154, 0155, 0157-0161, 0163. EFFECTIVITY: SB 2X-71-17 Number: 1. COMPLIANCE Mandatory: Cirrus Design considers this Service Bulletin to be MANDATORY. Accomplish this Service Bulletin within the next 10 Flight Hours. Compliance time begins upon receipt of this Service Bulletin. 2. EFFECTIVITY SR22T Serials 0001-0169, except 0004, 0019, 0027, 0047, 0097, 0126, 0127, 0135, 0138, 0139, 0144, 0154, 0155, 0157-0161, 0163. 3. APPROVAL FAA approval has been obtained on all technical data in this Service Bulletin that affects type design. 4. PURPOSE A condition can occur in which the induction system air box seal(s) could become disbonded and ingested into the turbocharger compressor. 5. DESCRIPTION This Service Bulletin provides instructions for the replacement of the air box seals. 6. WARRANTY INFORMATION For aircraft under warranty at the issue date of this Service Bulletin, Cirrus Design will cover all parts and labor costs for this Service Bulletin if the work is accomplished within the Compliance time period and the work is performed at an authorized Cirrus Design Service Center. 7. MANPOWER REQUIREMENTS 2.25 manhours. 8. OTHER PUBLICATIONS AFFECTED SR22/22T Airplane Maintenance Manual (p/n 13773-001) SR22/22T Illustrated Parts Catalog (p/n 13744-001) 9. WEIGHT AND BALANCE N/A SNS SUBJECT: 71-60 AIR INTAKES - Disbonding Of Induction System Air Box Seal(s) July 21, 2011 Issued: C I R R U S S E R V I C E B U L L E T I N M O D E L S R 2 2 T SB 2X-71-17 Page 2 SR22T Serials 0001-0169, except 0019, 0027, 0047, 0097, 0126, 0127, 0135, 0138, 0139, 0144, 0154, 0155, 0157-0161, 0163. EFFECTIVITY: July 21, 2011 10. MATERIAL INFORMATION The following parts are required to comply with this Service Bulletin. Parts can be obtained from an Autho- rized Cirrus Design Service Center or Parts Distributor. Order kit 70257-001 to obtain the following parts. 11. ACCOMPLISHMENT INSTRUCTIONS A. Acquire necessary tools, equipment, and supplies. B. Remove engine cowling. (Refer to AMM 71-10) C. Remove clamp securing air box to turbocharger. D. Disconnect air box from turbocharger. E. Remove and discard black rubber seal from air box. F. Remove residual adhesive from air box. G. Using Grinding Wheel, grind weld on outside diameter of airbox fitting flush to surrounding surface. (See Figure 1) CAUTION: Do not extend slots into any weld. H. Affected Serials in Range 0001 thru 0151, LH Air Box Only; Using Cut-Off Tool, extend three of the four air box flange slots to 0.90 inch (2.29 cm) with full radius on the end. Do not extend the top slot nearest to the weld. I. Affected Serials in Range 0001 thru 0151, LH Air Box Only; Using Cut-Off Tool, increase width of all four air box flange slots to 0.13 inch (3.30 mm). J. Affected Serials in Range 0152 thru 0169, LH Air Box Only; Using Cut-Off Tool, extend all four air box flange slots to 0.90 inch (2.29 cm) with full radius on the end. K. All Affected Serials, RH Air Box Only; Using Cut-Off Tool, increase width of all four air box flange slots to 0.13 inch (3.30 mm). Item No. Description P/N or Spec. Supplier Quantity 1 Reinforced Silicone Fiberglass Seal 29486-001 Cirrus Design 2 Description P/N or Spec. Supplier Purpose Grinding Wheel NA Any Source Abrading Cut-Off Tool NA Any Source Cutting Alodine Pen N/A Any Source Corrosion Prevention Emery Cloth 120 Grit Any Source Abrading Isopropyl Alcohol NA Any Source Solvent Cleaning RTV Prime Coat PR1204 Dow Corning Adhesive Primer RTV Sealant 736 Dow Corning Adhesive C I R R U S S E R V I C E B U L L E T I N M O D E L S R 2 2 T SB 2X-71-17 Page 3 SR22T Serials 0001-0169, except 0019, 0027, 0047, 0097, 0126, 0127, 0135, 0138, 0139, 0144, 0154, 0155, 0157-0161, 0163. EFFECTIVITY: July 21, 2011 L. All Affected Serials, RH Air Box Only: Using Cut-Off Tool, extend three of the four air box flange slots to 0.90 inch (2.29 cm) with full radius on the end. Do not extend the top slot nearest to the weld. M. Touch-up reworked areas with alodine pen. N. Abrade inside of Reinforced Silicone Fiberglass Seal with emery cloth and solvent clean with isopropyl alcohol. O. Abrade induction mounting flange on turbocharger with emery cloth and solvent clean with isopropyl alcohol. P. Clean air box of any residual machining debris. Q. Apply PR1204 RTV prime coat to turbocharger induction mounting flange. Cure for 2 hours. R. Apply a thin coating of 736 RTV sealant turbocharger induction mounting flange. S. Install Reinforced Silicone Fiberglass Seal to mounting flange pushing seal as far aft as possible. Remove excess RTV. Cure for 24 hours. CAUTION: Upon installation, If airbox fit is loose, remove from turbocharger, and use clamp to slightly reduce flange diameter. Use care not to over-compress and cause fit-up prob- lems. T. Install air box over turbocharger induction mounting flange. Torque clamp to 90-100 in-lb (10-11 Nm). U. Ensure FOD cannot enter induction system by inspecting air box flange and verifying fiberglass seal completely blocks air box slots. (See Figure 1) V. Install clamp securing air box to turbocharger. W. Repeat procedure on opposite turbocharger. X. Install engine cowling. (Refer to AMM 71-10) Y. Complete airplane records by noting compliance with SB 2X-71-17 in Aircraft Logbook. C I R R U S S E R V I C E B U L L E T I N M O D E L S R 2 2 T SB 2X-71-17 Page 4 SR22T Serials 0001-0169, except 0019, 0027, 0047, 0097, 0126, 0127, 0135, 0138, 0139, 0144, 0154, 0155, 0157-0161, 0163. EFFECTIVITY: July 21, 2011 Figure 1 Air Box Seal Installation 0.90 inch (2.29 cm) DO NOT LENGTHEN UPPER LOCATION 0.90 inch (2.29 cm) 0.13 inch (3.30 mm) LH side: Serials 22T-0001 thru 22T-0151. RH side: Serials 22T-0001 thru 22T-0169. LH side: Serials 22T-0152 thru 22T-0169. SLOT MODIFICATION AIR BOX (REF) CLAMP (REF) SEAL (REF)