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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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
ALL ú ú 01 Page 1 ú Jun 10/88
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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