Instructions for Continued Airworthiness

information necessary to ensure the continued airworthiness of the Aviation Fabricators auxiliary seat installation, per installation number 41-0116K when installed in accordance with Aviation Fabricators design data included on STC Drawing List AF-117 per Supplement Type Certificates (STC’s) SA2582CE and SA2583CE. Modifications to an aircraft obligates the operator to include the maintenance information provided by this document into the operators aircraft Maintenance Manual and operator’s aircraft scheduled maintenance program. This document defines supplementary maintenance operations and frequencies recommended by Aviation Fabricators Inc., to ensure the aircraft’s airworthiness. The information contained herein addresses the requirements specified in 14 CFR 23.1529, Instructions for Continues Airworthiness and supplements the basic Airplane Maintenance Manual only in those areas listed as pertains to the installation of the stretchers, as installed per the Aviation Fabricators STC Drawing List AF-117. For limitations and procedures not contained in this supplement, consult the Airplane Maintenance Manual. DATA All information to support the continued airworthiness of this modification is contained in: STC’s SA2582CE and SA2583CE STC Drawing List: AF-117 Installation: STC Drawing List: AF-117 Document AF-106 for 150 Series Document AF-537 for 152 Series Parts: Refer to p/n 41-0116 and respective drawings as listed on STC Drawing List AF-117. The auxiliary seat is a made up of a seat back assembly and a seat bottom assembly. The seat back assembly is screwed to the existing aircraft panels. The seat bottom assembly is attached to brackets that are mounted to the existing floor panel. The seat belts are attached to lugs that are attached to the aircraft bulkhead frame. Design Change Control All data and changes to the parts and assemblies will be tracked per STC Drawing List AF-117 latest approved revisions. Aviation Fabricators Inc. ICA Document No.: AF-457 805 North Fourth Street Revision (A) Clinton, MO. 64735 Date: November 15, 2012 Page 6 of 13 Applicable Aircraft Cessna 150D, 150E, 150F,150G, 150H, 150J, 150K, 150L, 150M, A150K, A150L, A150M, 152, A152, F150G, F150H, F150J, F150K, F150L, F150M, FA150K, FA150L, FRA150L, FRA150M, F152, FA152 Auxiliary Seat Assembly P/N 41-0116K 17-0464 HINGE, RH 16-0006 SEAT BACK ASSEMBLY 16-0021 SEAT BACK SUPPORT ASSEMBLY AN4-6A BOLT NAS43HT4-20 SPACER MS21042L4 NUT AN960-416 WASHER 2 EACH REQ CARGO TIE DOWN LUG AN3-4A BOLT NAS43HT3-6 SPACER MS21044N3 NUT 2 EACH REQ 17-0463 HINGE, LH NAS221-6 SCREW 6 EACH REQ ASSY. 16-0005 MS35206-249 SCREW MS21044-N3 NUT 4 EACH REQ 6.875 TYP A/C CL RIVET LINE REF 16-0004 FRAME ASSY. AN515-8R8 SCREW AN960-8 WASHER MS21044N08 NUT 4 EACH REQ BELT ASSY. 1 REQ 1 REQ SEAT BOTTOM TIE DOWN RING (REF) CARGO BULKHEAD REF DECORATIVE PANEL STA 70.69 Figure 1.0A Aviation Fabricators Inc. ICA Document No.: AF-457 805 North Fourth Street Revision (A) Clinton, MO. 64735 Date: November 15, 2012 Page 7 of 13 Lug Installation (152 Series) AN4-4A BOLT AN960-416 WASHER MS21042L4 NUT 0412024 BULKHEAD REFERENCE 17-0403 LUG 0412531 BRACKET (REF) LEFT SIDE SHOWN, RIGHT SIDE OPPOSITE Figure 1.0B 2.0 INSPECTION REQUIREMENTS AND OVERHAUL SCHEDULE 1. To comply with14 CFR 23.1529, continue the new auxiliary seat and restraint system on the same inspection and maintenance schedule used per the applicable Cessna Maintenance Manual for seats. a. The new auxiliary seat and restraint systems require no service other than inspection at normal inspection interval of 100 hours or annually. b. Perform a detailed visual inspection of the auxiliary seat bottom and back covering to detect apparent or obvious defects or irregularities. On the seat cushions, check for cracks and punctures within a 4” diameter circle. The cushions can have no more than three defects found within the 4” diameter circle. If it develops a “lump”, check to see if there are no more than two lumps within a 4” diameter circle. Any damage to the cushion assemblies outside of the described limits will require it to be replaced. Visually inspect the cushion covers for holes, punctures, and tears. If the damage to the covers is holes smaller than ½” in diameter or a cut at a Aviation Fabricators Inc. ICA Document No.: AF-457 805 North Fourth Street Revision (A) Clinton, MO. 64735 Date: November 15, 2012 Page 8 of 13 maximum of 2” in length then the covering is satisfactory. The sewing of the cover assemblies cannot have a tear or cut exceeding 1” in length. Any damage to the cover assemblies outside of the described limits will require it to be replaced. c. Visually inspect the auxiliary seat frame tubing and diaphragm for cracks and deformation. Damaged conditions can be detected as a crack at the edge of the tube or along the length of the tubes or as a crack, tear or cut found on the seat bottom diaphragm. Visually inspect all hardware for excessive wear before and after installation. There shall be no broken tubes. There shall be no sharp corners, edges, or protrusions that may injure passengers. Replace the tubes if they are bent in such a way that they are more than 1/2” off center. Replace the auxiliary seat frame tubes if crack length is found to be .125” or greater. Replace the tube if a dent is found running longer than 3”. Replace the frame tubes if deformation is greater than .25” the overall thickness of the tube diameter. d. Visually inspect the seat belt webbing for any fraying, cuts, wear, damage, or deterioration. There can be no webbing material removed in any way for the belt to be found acceptable. If the belt is found to be unacceptable send it to a certified repair station to be rewebbed. Cracked or broken fasteners or fittings are to be replaced with new immediately. For repair or replacement of damaged or broken parts or assemblies contact Aviation Fabricators Inc. 2. Inspection Time Limit for Auxiliary Seat Installations: 100 hour or annual inspection for the stretcher and restraint systems Task Code Schedule Date Mech Insp AFI-100 a. Inspect for damage to upholstery. AFI-101 b. Inspect safety belts for wear, cuts, fraying, damage, and deterioration. AFI-102 c. Inspect safety belt attachment fittings for wear and damage Aviation Fabricators Inc. ICA Document No.: AF-457 805 North Fourth Street Revision (A) Clinton, MO. 64735 Date: November 15, 2012 Page 9 of 13 AFI-103 d. Inspect seat floor attachment for damage, security, and function. AFI-104 e. Inspect seat frame for damage, and corrosion. AFI-105 f. Inspect overall auxiliary seat assembly for fit and function. A. The new auxiliary seat and restraint system are on the same inspection and maintenance schedule used per the applicable Cessna Maintenance Manual for passenger seats. 3.0 DIMENSION AND ACCESS: The installation of the auxiliary seat assembly does not change the dimensions of the aircraft or alter the access to any existing aircraft system. 4.0 LIFTING AND SHORING No change. 5.0 LEVELING AND WEIGHING Upholstered Seat Bottom Frame Assembly = 5.0 Upholstered Seat Back Assembly with = 6.0 Seat belt and installation hardware 6.0 TOWING AND TAXIING No change. 7.0 PARKING AND MOORING No change. 8.0 PLACARDS AND MARKINGS No change. Aviation Fabricators Inc. ICA Document No.: AF-457 805 North Fourth Street Revision (A) Clinton, MO. 64735 Date: November 15, 2012 Page 10 of 13 9.0 SERVICE INFORMATION Typical Auxiliary Seat Service Instructions: A. Upholstery Cleaning: Seat Service Instructions 1. Remove the seat back cushion from the back frame assembly. 2. Clean the seat back and bottom cushion covers with Armour All leather cleaner or equivalent. 3. Clean and inspect restraint system for damage or excessive wear. 4. Inspect all attachment fittings and replace if necessary. 5. Inspect overall auxiliary seat for fit and function. Typical Seat Service Instructions: Auxiliary Seat Assembly The auxiliary seat is a made up of a seat back assembly and a seat bottom assembly. The seat back assembly is screwed to the existing aircraft panels. The seat bottom assembly is attached to brackets that are mounted to the existing floor panel. The seat belts are attached to lugs that are attached to the aircraft bulkhead frame. To remove the auxiliary seat from the aircraft remove the six screws holding the seat back assembly to the aircraft panels and remove the bolt, nut, and spacer from the floor mounting brackets to remove the seat bottom assembly. To install the auxiliary seat into the aircraft install six screws to holding the seat back assembly to the aircraft panels and install a bolt, nut, and spacer through the floor mounting brackets and the seat bottom assembly. Refer to Figure 1.0A. Cushions The seat back cushion is removed by unsnapping it from the backrest support assembly. The seat bottom assembly is attached to the seat bottom frame assembly. Seat Belt and Shoulder Harness Seat belt and Shoulder Harness removal is accomplished by removing bolts spacers, nuts, and washers from lugs attached to the aircraft bulkhead frames on each side of the aircraft. Refer to Figures 1.0A for 150 series and 1.0B for 152 series. Aviation Fabricators Inc. ICA Document No.: AF-457 805 North Fourth Street Revision (A) Clinton, MO. 64735 Date: November 15, 2012 Page 11 of 13 B. RECOMMENDED OVERHAUL PERIODS No additional overhaul time limitations and requirements apply to the Aviation Fabricators Stretcher Assemblies. 10.0 AIRWORTHINESS LIMITATIONS The Airworthiness Limitations section is FAA approved and specifies maintenance required under Sec. 43.16 and 91.403 of the Federal Aviation Regulations unless an alternative program has been FAA approved. There are no Airworthiness Limitations to the aircraft with the addition of the auxiliary seat installed by this STC. 11.0 TROUBLESHOOTING Refer to the existing Aircraft Maintenance Manual for troubleshooting the auxiliary seat installation that is required beyond the information found on the installation documents AF-106 or AF-537. For replacement parts or repair of damage parts: Contact Aviation Fabricators at (660) 885-8317. Troubleshooting this installation should only be accomplished by FAA approved repair stations with the appropriate ratings or appropriately rated operator/individuals, with required test equipment and service data.