STC GROUP LLC MUSKEGON, MICHIGAN 49445 REPORT NO: … · stc group llc 480 ruddiman drive muskegon,...

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

480 Ruddiman Drive Cessna Model 182 Autopilot Installation Instructions

North Muskegon, Michigan 49445 1006003 Rev -

Cessna Model 182 Autopilot Installation Instructions Page 1

REVISIONS

Rev. Date: By: Checked By:

- 10 July, 2017 Paul Odum Jeff Ley

ER No: 1002

Section: Description

All Initial Release





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





LIST OF TABLES

No table of figures entries found.





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





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 Roll Servo Structural Mod

DWG 1006206 Pitch Servo Structural Mod

DWG 41300005 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.





ACRONYMS, ABBREVIATIONS, AND SYMBOLS

ASSY

Autopilot

Assembly

Trio Pro Pilot Autopilot

C.G. Center of Gravity

ER Engineering Record

FAA Federal Aviation Administration

ICA Instructions for Continued Airworthiness

INCH Inches

LH Left Hand

OEM Original Equipment Manufacturer

OUTBD

PCS

Recover

Outboard

Pilot Controlled Steering

Recover Button

RH

Servo

Right Hand

Trio Gold Stand Servo

STC Supplemental Type Certificate

WS Wing Station





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.

FIGURE 1-1 CESSNA 100 SERIES INSTALLATION LOCATIONS

Areas of modification

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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.

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.

Wing Access Panels – WS

103.5, 112.0 & 144.8





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.

Servo Hub Roll Pin Hole

Servo Stop

Roll Servo





FIGURE 2-2 TRIO PRO PILOT SERVO INSTALLATION





FIGURE 2-3 ROLL SERVO AND PUSH-PULL TUBE INSTALLATION

FIGURE 2-4 ROLL SERVO INSTALLATION ON MOUNTING PLATE





FIGURE 2-5 AIELRON PUSH-PULL TUBE ASSEMBLY





3.0 TRIO PITCH SERVO INSTALLATION

FIGURE 3-1 TRIO PRO PILOT PITCH SERVO INSTALLATION





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.





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.

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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.





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.





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.





7. Terminate supplied DB37 connector per Trio drawing, Figure 4-2.

FIGURE 4-2 TRIO HARNESS WIRING DIAGRAM





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.

STC GROUP LLC MUSKEGON, MICHIGAN 49445 REPORT NO: … · stc group llc 480 ruddiman drive muskegon,...

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