Manual Magnetic Indicator (Center Tank)
Figure 006
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1 1
1CES 1
R **ON A/C 001-049, 051-099, 101-105, 151-199, 201-213,
E. Attitude Monitor 39QM
(Ref. Fig. 002)
The attitude monitor is a circular level with graduations on the surface.
Each square of the grid is equal to 0.5 deg. change of attitude. The
position of the attitude monitor bubble, in relation to the grid, gives
the aircraft attitude.
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7. Operation/Control and Indicating________________________________
To measure the quantity of fuel in the wing tanks it is necessary to:
-extend and read the MLIs
-
measure the attitude of the aircraft (in pitch and roll)
-
measure the relative density of the fuel.
Each MLI is unlocked when it is pressed in and turned through 90 deg. It is then lowered slowly and carefully until it is extended to its maximum length. The MLI is then slowly pushed into its MLIH until a magnetic link is felt between the MLI and the float magnet. The point where the MLI meets the aircraft skin shows the fuel level in that part of the tank. The indication is read and the MLI is pushed fully into its MLIH and locked into position.
A set of mathematical tables (Ref. 12-11-28) are used to find the fuel volume from the MLI value and the aircraft attitude value. When the volume of fuel is known, you must multiply this by the fuel relative density value to get the fuel mass.
8. BITE Test_________ Not applicable
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__________________________________________________________________________ 105QM,106QM,107QM,108QM,109QM,110QM,111QM,200QM...) - REMOVAL/INSTALLATION
__________________________________________________________________________ R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
TASK 28-43-21-000-001 Removal of the Magnetic-Level-Indicator Rod 104QM thru 111QM WARNING : PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU
_______
START A TASK ON OR NEAR:
-
THE FLIGHT CONTROLS
-
THE FLIGHT CONTROL SURFACES
-
THE LANDING GEAR AND THE RELATED DOORS
-COMPONENTS THAT MOVE. WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
_______
GEAR.
1.
Reason for the Job
__________________
Self Explanatory
2.
Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific safety barriers
No specific access platform 3 m (9 ft. 10 in.)
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
28-00-00-910-001 Fuel Safety Procedures
28-43-21-991-001 Fig. 401
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3. Job Set-up
__________ Subtask 28-43-21-941-058
A. Safety Precautions
WARNING : OBEY THE FUEL SAFETY PROCEDURES.
_______
(1)
Put the safety barriers in position.
(2)
You must obey the fuel safety procedures (Ref. TASK 28-00-00-910-001) when you do work on the fuel system.
Subtask 28-43-21-010-052
B. Get Access
(1) Put the access platform in position under the applicable
Magnetic-Level-Indicator (MLI) rod.
4. Procedure
_________ (Ref. Fig. 401/TASK 28-43-21-991-001) Subtask 28-43-21-020-050
A. Removal of the Magnetic-Level-Indicator Rod 104QM thru 111QM
(1)
Push the (MLI) rod (2) in against the spring (4) and turn it through 90 deg. to release.
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