STC GROUP LLC 480 RUDDIMAN DRIVE MUSKEGON, MICHIGAN 49445 REPORT NO: 1006003 REV - TRIO AUTO PILOT INSTALLATION INSTRUCTIONS CESSNA MODEL 182 DATE: Original Issue 10 July, 2017 WRITTEN BY: Paul Odum APPROVED BY: Jeff Ley
STC GROUP LLC Page 1 REVISIONS Rev. Date: By: Checked By: - 10 July, 2017 Paul Odum Jeff Ley ER No: 1002 Section: All Description Initial Release Cessna Model 182 Autopilot Installation Instructions Page 1
STC GROUP LLC Page 2 TABLE OF CONTENTS TABLE OF CONTENTS... 2 LIST OF TABLES... 3 LIST OF FIGURES... 4 REFERENCES... 5 ACRONYMS, ABBREVIATIONS, AND SYMBOLS... 6 1.0 TRIO AUTO PILOT INSTALLATION... 7 2.0 ROLL SERVO INSTALLATION... 8 3.0 TRIO PITCH SERVO INSTALLATION... 13 4.0 HARNESS INSTALLATION... 17 Cessna Model 182 Autopilot Installation Instructions Page 2
STC GROUP LLC Page 3 LIST OF TABLES No table of figures entries found. Cessna Model 182 Autopilot Installation Instructions Page 3
STC GROUP LLC Page 4 LIST OF FIGURES Figure 1-1 CESSNA 100 SERIES INSTALLATION LOCATIONS... 7 Figure 2-1 ROLL SERVO ACCESS PANELS... 8 Figure 2-2 TRIO PRO PILOT SERVO INSTALLATION... 10 Figure 2-3 ROLL SERVO AND PUSH-PULL TUBE INSTALLATION... 11 Figure 2-4 ROLL SERVO INSTALLATION... 11 Figure 2-5 AIRLERON PUSH-PULL TUBE ASSEMBLY... 12 Figure 3-1 TRIO PRO PILOT PITCH INSTALLATION... 13 Figure 3-2 ELEVATOR PUSH-PULL TUBE INSTALLATION... 14 Figure 3-3 PITCH SERVO PUSH-PULL TUBE INSTALLATION... 14 Figure 4-1 TYPICAL CESSNA 182 COCKPIT INSTALLATION... 18 Figure 4-2 TRIO HARNESS WIRING DIAGRAM... 19 Cessna Model 182 Autopilot Installation Instructions Page 4
STC GROUP LLC Page 5 REFERENCES The following documents form a part of this report. Unless a specific revision of one of these documents is specified, the revision in effect at the time of original issue of this document shall apply. DWG 1006103 Trio Pro Pilot Autopilot Inst Model Cessna 182 DWG 1006205 DWG 1006206 DWG 41300005 Roll Servo Structural Mod Pitch Servo Structural Mod Trio Pro Pilot System Wiring Diagram Industry Specifications and Standards: 1. MMPDS-09 Metallic Materials Properties Development and Standardization 2. AC 43.13-1B Aircraft Inspection, Repair & Alterations Other Data: ER1006 STC GROUP LLC Program Engineering Record. Cessna Model 182 Autopilot Installation Instructions Page 5
STC GROUP LLC Page 6 ACRONYMS, ABBREVIATIONS, AND SYMBOLS ASSY Autopilot C.G. ER FAA ICA INCH LH OEM OUTBD PCS Recover RH Servo STC WS Assembly Trio Pro Pilot Autopilot Center of Gravity Engineering Record Federal Aviation Administration Instructions for Continued Airworthiness Inches Left Hand Original Equipment Manufacturer Outboard Pilot Controlled Steering Recover Button Right Hand Trio Gold Stand Servo Supplemental Type Certificate Wing Station Cessna Model 182 Autopilot Installation Instructions Page 6
STC GROUP LLC Page 7 1.0 TRIO AUTO PILOT INSTALLATION This installation procedure provides information and data necessary to install the Trio Pro Pilot Autopilot servos, harness, and controller in Cessna Aircraft Model 172 and 182 aircraft. The Provisions for Avionics upgrade, bracket, kit, must be completed prior to performing this installation. Portions of the Provisions installation are shown for reference. All installation documentation for Cessna and other aircraft types is available on The STC Group LLC website at www.thestcgroup.net. If any questions arise during installation contact The STC Group LLC immediately for assistance. Phone numbers are available on the website. For Trio Pro Pilot specific questions contact Trio Avionics at (619) 448-4619. Areas of modification FIGURE 1-1 CESSNA 100 SERIES INSTALLATION LOCATIONS Cessna Model 182 Autopilot Installation Instructions Page 7
STC GROUP LLC Page 8 2.0 ROLL SERVO INSTALLATION 2.1 Roll Servo Installation 1. Remove RH wing inspection panels located at WS 103.5, 112.0, and 144.8, Ref Figure 2-1. Wing Access Panels WS 103.5, 112.0 & 144.8 FIGURE 2-1 ROLL SERVO ACCESS PANELS 2. Apply Blue Loctite 242 to the M3 screws supplied in the autopilot installation kit. 3. Fasten the servo arm, P/N 1006402, to the servo hub using the four (4) M3 screws supplied. Use the correct torque setting and do not over tighten. Note: The roll servo hub roll pin hole must be aligned with the servo stop as shown in Image 1 before attaching the servo arm to the hub. Cessna Model 182 Autopilot Installation Instructions Page 8
STC GROUP LLC Page 9 Servo Hub Roll Pin Hole Servo Stop Roll Servo IMAGE 1 SERVO HUB ROLL PIN ALIGNMENT 4. Figure 2.2 depicts the servo installation. 5. Position the roll servo, P/N 30000000 as shown. Use four (4) MS27039-0807 screws that were supplied in the Provisions kit to attach the servo to the roll servo mounting plate, P/N 1006251. 6. Install the Trio Roll Servo and Push Pull tube assembly as shown on DWG 1006205 Rev.-, C-C and F-F (Figure 2-3), G-G (Figure 2-4), and H-H (Figure 2-5). The servo arm should be next to upper wing skin as shown. Note: The Push-Pull Tube attachment assembly will vary according to the year of the aircraft. Later model 182 aileron bellcranks allow the rod end to be positioned between the bellcrank arms. Earlier models may require the rod end to be positioned either on top or below the aileron bellcrank arm. Note: Documentation and detailed illustrations for the complete Trio autopilot installation are available on The STC Group website as detailed Section 1. Refer to drawing numbers 1006103 Sheet 2, 1006205, and the Cessna 182 Illustrated Parts catalog for detailed information. 7. Connect the servo harness, P/N 40000000, to the servo DB9 connector outlined in Section 4. Cessna Model 182 Autopilot Installation Instructions Page 9
STC GROUP LLC Page 10 FIGURE 2-2 TRIO PRO PILOT SERVO INSTALLATION Cessna Model 182 Autopilot Installation Instructions Page 10
STC GROUP LLC Page 11 FIGURE 2-3 ROLL SERVO AND PUSH-PULL TUBE INSTALLATION FIGURE 2-4 ROLL SERVO INSTALLATION ON MOUNTING PLATE Cessna Model 182 Autopilot Installation Instructions Page 11
STC GROUP LLC Page 12 FIGURE 2-5 AIELRON PUSH-PULL TUBE ASSEMBLY Cessna Model 182 Autopilot Installation Instructions Page 12
STC GROUP LLC Page 13 3.0 TRIO PITCH SERVO INSTALLATION FIGURE 3-1 TRIO PRO PILOT PITCH SERVO INSTALLATION Cessna Model 182 Autopilot Installation Instructions Page 13
STC GROUP LLC Page 14 3.1 Pitch Servo Installation 1. Mount the Pitch Servo, P/N 40000000, to the servo using four (4) MS27039-0807 screws supplied in the Provisions hardware kit. 2. Apply Blue Loctite 242 to the M3 screws supplied in the autopilot installation kit. 3. Fasten the servo arm, P/N 1006402, to the servo hub using the four (4) M3 screws supplied. Use the correct torque setting and do not over tighten. Note: The roll servo hub roll pin hole must be aligned with the servo stop as shown in Image 1 before attaching the servo arm to the hub. FIGURE 3-2 ELEVATOR PUSH PULL TUBE INSTALLATION FIGURE 3-3 PITCH SERVO PUSH PULL TUBE INSTALLATION 4. Lock the elevators into the neutral position as shown in Image 2. Use a wood block with padding as protection for the elevators and horizontal stabilizer surfaces, a 4-inch AN4 bolt (or similar), large area washers, and AN310 nut (or similar) to lock the elevators into the neutral position on both sides of the aircraft. Refer to Image 2. Cessna Model 182 Autopilot Installation Instructions Page 14
STC GROUP LLC Page 15 IMAGE 2 CESSNA 182 ELEVATOR LOCKED IN NEUTRAL USING WOOD BLOCK 5. Assemble the push-pull tube servo to elevator bellcrank interconnect as depicted in Figures 3-1, 3-2, and 3-3 and the following steps. Note: Drawing numbers 1006103 Sheet 3, and 1006206 Sheets 1 and 2, should be referenced in addition to the Figures mentioned in Step 7. The Cessna 182 Illustrated Parts Catalog should also be reference. These are available at www.thestcgroup.net. 6. Use an appropriately sized roll pin punch to remove the existing elevator bolt. 7. Leave the roll pin punch in place. 8. Use the AN4-13 bolt supplied in the Provision kit to tap out the roll pin punch and assemble as shown in Figure 3-2 and Detail E on Sheet 2 of DWG 1006206. 9. Attach the push-pull tube rod end to the pitch servo arm as depicted in Figure 3-3 and Detail D on DWG 1006206 Sheet 2. 10. Remove the previously installed elevator lock blocks. 11. Verify push pull tube has proper clearance from control cables. This can be accomplished by having a helper move the elevator through the complete range of motion up and down. Cessna Model 182 Autopilot Installation Instructions Page 15
STC GROUP LLC Page 16 Note: The Due to manufacturing differences, there may be a clearance issues with the lower elevator cable. If there is interference issue contact The STC Group for assistance before performing Step the next steps. 12. If there is interference with the cables, the pitch servo tray mounting holes may be elongated by approximately 0.15 so that the tray sits more to the starboard side of the aircraft. 13. Contact the STC Group prior to performing any modifications to the pitch servo installation. The following modification should correct any manufacturing differences between aircraft years. a. Un-mount the servo but leave the unit assembled. Remove the pitch servo tray. b. Mark the tray and center punch. c. Drill a pilot hole using a #51 drill bit in that location. d. Using a #17 drill (0.173 ) enlarge the pilot hole. Deburr and reinstall the pitch servo tray. e. Mount servo and recheck clearances. If a problem remains recheck push pull tube assemble for correct positions of spacers and washers. If the problem continues contact The STC Group for technical support. 14. Tighten down all screws once aligned. 15. Check for full range of motion on pitch controls and recheck for clearance on cables. 16. When the elevator has been checked for clearances and clearances are satisfactory connect the servo harness, P/N 40000000, to the servo DB9 connector outlined in Section 4. Cessna Model 182 Autopilot Installation Instructions Page 16
STC GROUP LLC Page 17 4.0 HARNESS INSTALLATION NOTE: Prior to connecting harness DB9 or DB37 connectors into the servos or autopilot control head perform a full power, ground, and data test on the harness. 4.1 Roll Servo Harness Installation 1. Remove interior trim panels on cockpit passenger side 2. Remove existing Cessna factory autopilot wiring and set aside for weighing 3. Route Trio Harness Roll servo wiring along same path and using the same clamps as factory autopilot wiring. 4. Take care to protect harness pins at end of harness. 5. Terminate supplied DB9 connector per Trio diagram. Refer to Trio DWG 41300005, Figure 4-2. 6. Attach DB 9 connector to Trio Roll Servo. 7. Secure harness cable end at the servo end with supplied clamp or equivalent. 4.2 Pitch Servo Harness Installation 1. Remove co-pilot seat 2. Route Trio Harness Pitch servo wiring under cockpit floor taking care to secure away from other aircraft wiring and moving components. 3. Route harness to Trio Pitch Servo location. 4. Take care to protect harness pins at end of harness. 5. Terminate supplied DB9 connector per Trio diagram 41300005, Figure 4-2. 6. Attach DB 9 connector to Trio Roll Servo. 7. Secure harness cable end at the servo end with supplied clamp or equivalent. Cessna Model 182 Autopilot Installation Instructions Page 17
STC GROUP LLC Page 18 4.3 Trio Autopilot Controller 1. The Trio autopilot controller is ordered in Panel Mount or Instrument Mount versions. Refer to Figure 4-1. FIGURE 4-1 TYPICAL CESSNA 182 COCKPIT INSTALLATION 2. Install the autopilot controller using best practices in either panel or hole locations. Refer to AC 43-13 for this step and all following steps. 3. Refer to DWG 1006103 (Figure 4-1). 4. Utilize Trio DWG 41300005 and The STC Group DWG 1006103 for the following steps. 5. Install supplied 5 ampere circuit breaker within easy reach of the pilot and label per DWG 1006103. 6. If a Panel Mount unit is ordered install the supplied power switch and label per DWG 1006103. Cessna Model 182 Autopilot Installation Instructions Page 18
STC GROUP LLC Page 19 7. Terminate supplied DB37 connector per Trio drawing, Figure 4-2. FIGURE 4-2 TRIO HARNESS WIRING DIAGRAM Cessna Model 182 Autopilot Installation Instructions Page 19
STC GROUP LLC Page 20 8. Terminate wiring with aircraft GPS or handheld using installation instructions provided by the specific vendor. 9. If ARINC 429 is available from GPS terminate ARINC 429 connections. 10. Install the supplied PCS button on the left side of the pilots control yoke and label PCS per DWG 1006103. 11. Install Recover button in an available convenient location within easy reach of the pilot and label AP Recover per DWG 1006103. 12. Ensure that the analog alarm out is connected to the un-switched audio input on the Audio Panel. 13. Complete all logbook entries as required in 14 CFR 91.405 and 14 CFR 91.417 (a) (b) to return the aircraft to service. 14. Submit Form 337 and STC documentation to FAA. Cessna Model 182 Autopilot Installation Instructions Page 20