A 747-400 MAINTENANCE MANUAL

A 747-400 MAINTENANCE MANUAL
 CHAPTER 55 - STABILIZERS
 TABLE OF CONTENTS
_________________
 Chapter Section Subject_______ Subject ____ Effectivity
_______ Page ___________
 STABILIZERS 55-00-00
___________ Description and Operation 1 ALL General 1
 HORIZONTAL STABILIZER 55-10-00
_____________________
 Description and Operation 1 ALL
 General 1
 Doors and Access Openings 3
 Structure - Stabilizer 1
 BONDING JUMPER - HORIZONTAL 55-10-04

 STABILIZER
 Inspection/Check 601 ALL
 LEADING EDGE - HORIZONTAL 55-10-01
 STABILIZER
 Removal/Installation 401 ALL
 SEAL (FORWARD) - HORIZONTAL 55-10-03
 STABILIZER-TO-FUSELAGE
 Removal/Installation 401 ALL
 TIP - HORIZONTAL STABILIZER 55-10-02
 Removal/Installation 401 ALL
 FITTINGS 55-17-00
 PIVOT FITTINGS - HORIZONTAL 55-17-51
 STABILIZER
 Removal/Installation 401 ALL

 ELEVATORS 55-20-00
_________
 Description and Operation 1 ALL
 General 1
 Structure 1

 VERTICAL STABILIZER (FIN) 55-30-00
_________________________
 Description and Operation 1 ALL
 General 1
 Doors and Access Openings 3
 Structure - Fin 1
 DORSAL FIN - VERTICAL STABILIZER 55-30-03

 Removal/Installation 401 ALL
 55-CONTENTS
 GUN Page 1 Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 747-400 MAINTENANCE MANUAL
 CHAPTER 55 - STABILIZERS
 TABLE OF CONTENTS
_________________
 Chapter Section Subject_______ Subject ____ Effectivity
_______ Page ___________
 LEADING EDGE - VERTICAL 55-30-01
 STABILIZER (FIN) Removal/Installation 401 ALL Approved Repairs 801 ALL
 PANEL - EMPENNAGE ACCESS 55-30-10
 Removal/Installation 401 ALL
 TIP - VERTICAL STABILIZER (FIN) 55-30-02
 Removal/Installation 401 ALL
 VERTICAL STABILIZER TIP 55-31-00
 LIGHTNING DIVERTER STRIPS 55-31-02
 Removal/Installation 401 ALL

 RUDDER 55-40-00
______
 Description and Operation 1 ALL
 General 1
 Structure 1

 ATTACH FITTINGS 55-50-00
_______________
 Description and Operation 1 ALL
 General 1
 Elevator 1
 Fin 1
 Horizontal Stabilizer 1
 Rudder 1

 55-CONTENTS
 GUN Page 2 Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 STABILIZERS - DESCRIPTION AND OPERATION
_______________________________________
 1.  General (Fig. 1)_______
 A.  The stabilizers are aerodynamic control structures in the tail or empennage section of the airplane. They consist of a vertical stabilizer (fin), dorsal fin, rudder, horizontal stabilizer and elevators. The vertical stabilizer is a structure composed of a leading edge, auxiliary, front and rear spar. It has a combination of aluminum honeycomb panels and rib and machined skin, stiffener and rib construction. The dorsal fin (fairing) is constructed of machined aluminum skin and ribs. It fairs the vertical stabilizer to the fuselage. The upper and lower rudders are made of fiberglass honeycomb sandwich construction with supporting ribs strengthened with front and rear spars. The rudders are hinged to the vertical fin. The horizontal stabilizers are constructed similarly to the vertical stabilizer as are elevators of similar construction to rudders. The elevators are hinged to the horizontal stabilizer.
 B.  The vertical stabilizer (fin) is stationary, but rudders hinged to the fin move left and right to provide directional control for the aircraft. The horizontal stabilizer moves up and down to provide pitch trim control The elevators also move up and down to provide pitch control.
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 55-00-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

DORSAL FIN (FAIRING)
Stabilizers
Figure 1

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