Meggitt / S-TEC Flight Line Service Manual for Rate-Based Autopilots – PDF Download

Description

Meggitt / S-TEC Flight Line Service Manual for Rate-Based Autopilots – PDF Download

DESCRIPTION:

The Meggitt Avionics / S-TEC Flight Line Service Manual (P/N 87102) provides detailed procedures for flight line maintenance, adjustment, and troubleshooting of all rate-based autopilot systems in the S-TEC product family. This includes systems 20, 30, 30ALT, 40, 50, 55, 55X, 550, 60-1, 60-2, 60PSS, and 65, among others.

This manual is written for aircraft avionics engineers, A&P technicians, and authorized service centers performing calibration and functional checks of installed S-TEC autopilot units. It includes ground test procedures, roll centering adjustments, and complete system interconnect diagrams.

IMAGES:

Contents Overview

Section 1 – Overview

Outlines supported autopilot systems and required ground support tools:

• Flight Line Autopilot Tester (P/N 95101)

• Breakout Box (P/N 9524)

• Adapter Cables (P/N 39198 & 39199)

• Extender Assembly (P/N 01264)
  Includes service philosophy and troubleshooting flow for system isolation.

Section 2 – Roll Centering

Procedures for ground and in-flight roll centering adjustment using the Roll Centering Tool (P/N 95101-1). Instructions for NAV/LO TRK/HI TRK modes and stabilization checks.

Section 3 – Functional Ground Tests

Extensive test procedures for all supported systems. Each test includes power-up sequences, heading and navigation channel verification, trim, altitude, and disconnect tests. Covers:

• System 20, 30, 30ALT, 40, 50, 55, 55X, 550

• System 60-1, 60-2, 60PSS, and 65

• System-specific LED indicators and annunciation responses

• TRIM/ALT/VOR/HDG operational verification

Section 4 – Simulator Operation

Setup of flight line simulators for roll, pitch, heading, altitude, and turn coordination emulation.

Section 6 – Interconnect Drawings

• Heading system wiring diagrams (DG 6406, HSI 6443, EDO-AIRE DG 52D54).

• System interconnects for rate gyro, servos, and control heads.

Section 8 – Specifications

Electrical power data, servo current range, signal voltages, and mechanical limits.

Section 9 – Glossary & Reference Data

Defines technical terms and abbreviations for field servicing.

Supported Systems

• System 20/30/30ALT – Basic 2-axis rate-based autopilots

• System 40/50 – NAV, HDG, and APR modes

• System 55/55X/550 – Advanced altitude hold and GPSS integration

• System 60-1/60-2/65/PSS – Precision pitch, roll, and trim control

• Includes both manual and automatic trim configurations

Service Objectives

1. Ground Verification: Confirm operation through power-up and functional tests.

2. Component Isolation: Use Flight Line Tester and breakout tools to locate subsystem faults.

3. In-flight Confirmation: Perform roll and pitch tracking validation during flight per POH procedures.

TECHNICAL HIGHLIGHT

FILE DETAILS