CONDITIONS POSITION OF FLAT TIRE(S) LIMITS
ON NOSE GEAR (1) ONE FLAT TIRE
NONE
ON NOSE GEAR (2) TWO FLAT TIRES
TOW TO CLEAR RUNWAY, THEN INSTALL AT LEAST ONE SERVICEABLE TIRE.
POSITIONED ON ONE OR BOTH MAIN GEAR (3) ONE FLAT TIRE
NONE
DIAGONAL WHEELS, POSITIONED ON ONE OR BOTH MAIN GEAR (4) TWO FLAT TIRES ON
NONE
TANDEM, POSITIONED ON ONE OR BOTH MAIN GEAR (5) TWO FLAT TIRES IN
NONE
FRONT OR REAR WHEELS, POSITIONED ON ONE OR BOTH MAIN GEAR (6) TWO FLAT TIRES ON
TOW ONLY TO GET OFF RUNWAY IF RUNWAY MUST BE CLEARED, THEN REPLACE TIRES OR MOVE TIRES AROUND TO MEET CONDITION (4).
POSITIONED ON ONE OR BOTH MAIN GEAR (7) THREE FLAT TIRES
VICEABLE TIRES TO MEET CONDITION (4). MUST BE CLEARED, THEN INSTALL SER-TOW ONLY TO GET OFF RUNWAY IF RUNWAY
IN ANY ORDER. GEAR TIRES POSITIONED WITH 5 FLAT MAIN (8) ONE FLAT NOSE TIRE
VICEABLE TIRES TO MEET CONDITION (4). MUST BE CLEARED, THEN INSTALL SER-TOW ONLY TO GET OFF RUNWAY IF RUNWAY
GEAR ONE OR BOTH MAIN (9) FOUR FLAT TIRES ON
VICEABLE TIRES TO MEET CONDITION (4). MUST BE CLEARED, THEN INSTALL SER-TOW AT BOTH MAIN GEARS IF RUNWAY
Tow Airplane with Flat Tire(s)
Figure 201
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09-11-04
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
TAXIING - MAINTENANCE PRACTICES
_______________________________
1. General_______
A. Taxi Safety
(1)
When you taxi an airplane, caution and precision are necessary. The taxi procedure must be done only by persons that are approved.
(2)
The taxi path must be clear of all persons and vehicles.
(3)
You must get approval from the airport ground control to taxi the airplane. This will prevent interference with other airport operations.
(4)
You must keep clearance from the buildings and the other airplanes, at all times.
(5)
You must have electrical power to operate the taxi lights, the navigation lights, the radio and intercom equipment, and other systems. This is necessary to taxi the airplane safely.
(6)
The applicable airplane hydraulic systems must be pressurized to supply hydraulic pressure. This is for the airplane brakes and the nose wheel steering systems.
(7)
When the taxi operations are done at night or in bad weather conditions, the crew must know the area around the airplane. They must know the location of parked vehicles, maintenance stands, and the condition of the pavement surface.
(8)
A taxi checklist for the airline maintenance persons is necessary to help the crew have a safe taxi operation.
B. Maintenance Persons Necessary to Taxi the Airplane
(1)
The persons necessary for a safe taxi operations must include a flight compartment crew and a ground crew.
(2)
There must be a minimum of two flight compartment persons.
(a) The flight compartment persons must be approved on all of the procedures that follow, for the taxi operations: 1) To prepare the flight compartment 2) The engine start, operation, and shutdown procedures 3) The engine fire and emergency procedures 4) The radio and intercom operation and procedures 5) The taxi procedures (turning, wing tip clearances, taxi
speeds, etc.)
(3) One or two ground crew persons are necessary to do the tasks that follow:
NOTE: In areas of congestion or a limit of space (hangers, ramp
____ areas next to the terminal, airplane parking areas, etc.) more ground persons are necessary. This is to help monitor the wing clearances and to be general observers.
(a)
To remove and replace the wheel chocks
(b)
To help during the engine start
(c)
To help the flight compartment crew during the airplane movement
(d)
To make sure the airplane taxi path is clear.
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