Service Bulletin TAT SB08-01

Cirrus Design Corporation cannot be responsible for the quality of work performed by others while fulfilling the requirements of any service bulletin. Procedures specified in service bulletins must be accomplished using industry standard maintenance practices and applicable government regulations. Cirrus Design Corporation 4515 Taylor Circle Duluth, Minnesota 55811 PH (218) 788-3000 fieldservice@cirrusdesign.com SA 08-03 1 of 1 Owner Service Advisory Note: Serial numbers designated as Group A perform TAT SB08-01 on RH Exhaust Elbow. Serial numbers designated as Group B perform TAT SB08-01 on RH and LH Exhaust Elbow. The following reference material is being provided to inform Cirrus Design customers of a recently released vendor service document. TO: Owners, Operators, and Service Centers SUBJECT: Release of Tornado Alley Turbo Service Bulletin TAT SB08-01 EFFECTIVITY: Cirrus SR22 Serials 2022 thru 2619 with Turbonormalizing System (Group A) Cirrus SR22 Serials 2620 thru 2914 with Turbonormalizing System (Group B) Vendor and Contact Tornado Alley Turbo Director of Maintenance - David Landreth 300 Airport Road Ada, Oklahoma 74820 Telephone: 580-332-3510 Fax: 580-332-4577 Document Number Service Bulletin TAT SB08-01 Date 08 Feb 2008 Subject Modification of Exhaust Elbow(s) Background / Purpose The purpose of this Service Bulletin is to inform affected owners and operators of a minor alteration to an exhaust component required for improved durability of the tail pipe assemblies. Description This Service Bulletin contains procedures to modify the RH exhaust elbow (Group A) and both the RH and the LH exhaust elbow (Group B). The exhaust elbow is inserted between the tail pipe and the waste gate outlet fitting. Compliance Mandatory: Tornado Alley Turbo considers this Service Bulletin to be MANDA- TORY. Accomplish this Service Bulletin at the next scheduled maintenance or within the next 25 flight hours, whichever occurs first. Compliance time begins upon release date of the Service Bulletin. Manpower Group A: 1.25 hours Group B: 2.25 hours Warranty Information Labor cost for this Service Bulletin will be covered by the STC holder. The stated man hours are covered under this warranty. Only Authorized Cirrus Service Cen- ters are eligible for warranty consideration. Special approval for other mainte- nance facilities may be obtained by contacting Tornado Alley Turbo, Inc. 08 Feb 2008 SA 08-03 Model SR22 Issued: Tornado Alley Turbo, Inc. TAT SB08-01 300 Airport Road Page 1 of 4 Ada, Ok 74820 PH (580)332-3510 Service Bulletin TAT SB08-01 Issued: February 8, 2008 Model SR22 w/ Tornado Alley Turbo, Inc. Turbonormalizer installed pursuant to Engine Technologies, Inc. STC SA10588SC on Cirrus Design Corporation Model SR 22 aircraft COMPLIANCE Mandatory: Tornado Alley Turbo considers this Service Bulletin to be MANDATORY. Accomplish this Service Bulletin at the next scheduled service or within 25 hours, whichever comes first. Compliance time begins upon the date of this Service Bulletin. EFFECTIVITY There are two groups of affected serial number aircraft. The aircraft serial numbers applicable to each group are identified in Cirrus Owner Service Advisory SA 08-03. See that document for the specific aircraft serial numbers. Group A: Cirrus Design SR 22 aircraft that incorporate the Tornado Alley Turbo, Inc. Turbonormalizing System installed pursuant to ETI STC SA10588SC. This group requires inspection and modification of the right hand side exhaust elbow, only. Group B: Cirrus Design SR 22 aircraft that incorporate the Tornado Alley Turbo, Inc. Turbonormalizing System installed pursuant to ETI STC SA10588SC. This group requires inspection and modification of both the right hand and left hand exhaust elbows. APPROVAL Engine Technologies, Inc., the Turbonormalizing System STC holder, has approved all technical data in this Service Bulletin that affects the type design. PURPOSE The purpose of this Service Bulletin is to inform affected owners and operators of a minor alteration to an exhaust component required for improved durability of the tailpipe assemblies. DESCRIPTION This Service Bulletin contains procedures to modify the right hand exhaust elbow (Group A) and both the right hand and the left hand exhaust elbow (Group B). This exhaust elbow is inserted between the tailpipe and the wastegate outlet fitting. See Figures 1 & 2. Tornado Alley Turbo, Inc. TAT SB08-01 300 Airport Road Page 2 of 4 Ada, Ok 74820 PH (580)332-3510 Figure 1. Right side shown. Left Side Similar. Figure 2. Left side. Showing where to place reference mark before disassembly. Tornado Alley Turbo, Inc. TAT SB08-01 300 Airport Road Page 3 of 4 Ada, Ok 74820 PH (580)332-3510 WARRANTY INFORMATION Labor cost for this Service Bulletin will be covered by the STC holder. The stated man-hours are covered under this warranty. Only Authorized Cirrus Service Centers are eligible for warranty consideration. Special approval for other maintenance facilities may be obtained by contacting Tornado Alley Turbo, Inc. MANPOWER REQUIREMENTS Group A: 1.25 hours. Group B: 2.25 hours. OTHER PUBLICATION AFFECTED N/A WEIGHT AND BALANCE Weight change: Negligible. MATERIAL INFORMATION Information sheet: An information sheet, “TAT SB08-01 Service Bulletin Information Sheet,” is supplied as part of this service bulletin. It must be completed and returned for warranty credit and payment. ACCOMPLISHMENT INSTRUCTIONS Group A Group A aircraft require modification of the exhaust elbow ONLY on the right hand side. (Group B aircraft require modification of the elbow on both the right and the left hand side.) Inspection: 1. Within the next 25 hours, or at the next regularly scheduled service, whichever comes first: a. Read all of these instructions. Then, gain access to the right hand side of the aircraft by removing the lower right hand cowl. b. Visually locate the wastegate outlet on the aft side of the right hand wastegate. See Figure 1. Disconnect the heater hose clamp and hose from the intercooler to facilitate inspection and access. c. Visually inspect the right angle exhaust elbow and the area where the elbow inserts into the tailpipe, for any signs of a crack in the weld of the vertical receptacle in the tailpipe into which the short leg of the right angle elbow is inserted. If any cracks are observed, then contact Tornado Alley Turbo, Inc. for replacement parts before return to service or further flight. d. Clean the area where the elbow is inserted into the wastegate outlet tube. e. Mark the exhaust elbow at the aft end of the wastegate outlet tube. Tornado Alley Turbo, Inc. TAT SB08-01 300 Airport Road Page 4 of 4 Ada, Ok 74820 PH (580)332-3510 f. Remove the four nuts and bolts securing the wastegate outlet flange and swaged 1.75” tube into which the right angle exhaust elbow is inserted. g. Lift on the 1.75” diameter exhaust elbow and remove both components from the aircraft. In some cases, some modest interference of the wastegate flange with the wastegate may exist, but in almost all cases, the elbow and wastegate outlet should be able to be removed without further disassembly of the exhaust system. h. Remove the exhaust elbow from the wastegate outlet swaged tube and clean any exhaust residue from the elbow and wastegate outlet tube assembly. Be careful to preserve the previously applied reference mark. i. Measure the length of the elbow from the previously applied reference mark to the end of the long leg of the elbow. j. If this measurement is greater than 1.00”, shorten the elbow so that the engagement, when re- installed, will be no more than 1.10” and not less than 1.00” as measured from the reference mark. k. If the engagement length is less than 1.00” but is more than 0.90” then simply re-install the elbow. If the engagement is less than 0.90” then contact Tornado Alley Turbo, Inc., for a replacement elbow. l. Technique for shortening the elbow: Use good shop practices. Recommended, but not the only method, is to mark the final cutoff line and use a metal cut-off saw and trim the part with some remaining excess and then make the final length adjustment with a belt sander, then use a deburr tool and clean the inside and outside edges of the elbow. Alternative methods would include the use of an abrasive cut-off tool, followed by adequate deburr of the inside and outside edges. Wear safety glasses. 2. Re-install the elbow and the wastegate outlet assembly as follows: a. Re-install wastegate outlet with the right angle exhaust elbow properly inserted into the wastegate outlet and the tailpipe. b. Loosely install the nuts on the four bolts. c. Adjust the position of the wastegate outlet with the right angle elbow inserted into both the tailpipe and the wastegate outlet for a “nominal” fit with good alignment. d. Note: the wastegate outlet has slotted holes. Normally the slotted holes should be oriented so the wastegate outlet flange can be adjusted in-board and out-board. However, it is permissible to orient the wastegate outlet so that it can be adjusted vertically, if a better fit up is obtained. e. Torque nuts to 70 in-lbs. 3. Complete the aircraft records by noting compliance with Service Bulletin TAT SB08-01in the aircraft logbook. 4. Return the completed “TAT SB08-01 Service Bulletin Information Sheet” and all replaced parts, if any, to Tornado Alley Turbo, Inc. for warranty credit. Group B Using the same instructions and technique described above for Group A aircraft, accomplish the same inspection and modification for BOTH THE RIGHT AND LEFT side wastegate outlet elbows. For further information: Contact TAT Director of Maintenance David Landreth 300 Airport Road Ada, Oklahoma 74820 580-332-3510 Fax 580-332-4577 300 Airport Road Ada, Oklahoma 74820 580-332-3510 Fax 580-332-4577 TATI SB08-01 Information Sheet Aircraft Serial Number:_______________. Aircraft N number: ______________________ Registered owner of aircraft: ___________________________________________________ Physical location of the aircraft: _________________________________________________ Hours in Service: __________________ Hours in Service Since Installation of Turbo (if different): ________________ ___________________________________________________________ Contact Info of Service Center (Center, address, phone number, contact, repair order number) ___________________________________________ ___________________________________________ ___________________________________________ ___________________________________________ Date TAT SB08-01 accomplished and aircraft returned to service: _____________________ Describe any unusual findings or discrepancies, and add any pertinent comments: ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ For further information contact: David Landreth Director of Maintenance Tornado Alley Turbo, Inc. 300 Airport Road Ada, Oklahoma 74820 580-332-3510 Fax 580-332-4577