4. Procedure_________
Subtask 52-82-00-220-051
R A. Inspection (Ref. Fig. 602/TASK 52-82-00-991-002)
R R (1) Do an inspection of the hinges of the nose landing gear doors. This inspection includes the hinge pins.
(2) Make sure that there is no :
R R R R (a) Corrosion damage : - If you find corrosion damage, refer to the structural repair manual (Ref. SRM 512200 P.Block 001) for types, inspection, removal and corrosion protection.
R R R R R (b) Other damage (cracks, scratches, stress, marks, dents, bumps,...): - If you find this type of damage, refer to the structural repair manual (Ref. SRM 511100 P.Block 001) for damage classification and corrective action.
Subtask 52-82-00-916-050
B. Application of Material Protection
CAUTION : DO NOT APPLY TEMPORARY PROTECTION ON THE OXYGEN SYSTEMS._______ MAKE SURE THAT THE TEMPORARY PROTECTION DOES NOT GET: -ON COMPOSITE PARTS, CONTROL CABLES, PULLEYS,TEFLON BEARINGS. -ON LUBRICATED SURFACES. -IN DRAIN VALVES OR OTHER ORIFICES. TEMPORARY PROTECTION ON OR IN THESE PARTS CAN CAUSE DAMAGE.
R R R (1) Apply masking paper or masking tape BONDING AND ADHESIVE COMPOUNDS (Material No. 08-074) on the equipment and fittings adjacent to the area.
(2) Apply a layer of STORAGE PRESERVATION (Material No. 15-005) or STORAGE PRESERVATION (Material No. 15-006) to the inspected area.
(3) Remove the masking paper or the masking tape.
R Nose Landing Gear - Secondary Door Hinges Figure 602/TASK 52-82-00-991-002
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5. Close-up
________
Subtask 52-82-00-942-051
A. Close Access
(1) Make sure that the work area is clean and clear of tool(s) and other items.
R (2) Close the nose landing-gear doors (Ref. TASK 32-22-00-410-001)
(3) Remove the access platform(s).
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MISCELLANEOUS DOORS (RAT...) - DESCRIPTION AND OPERATION
________________________________________________________
1. General
_______
Data to the doors is given in the Chapter 52-91-00, P. Block 001.
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DOORS - RAM AIR TURBINE - DESCRIPTION AND OPERATION
___________________________________________________
1.
General
_______ The Ram Air Turbine (RAT) compartment has two doors which cover the RAT and its components in the retracted position. The RAT doors are installed on the left side in the belly fairing between FR41 and FR42.
2.
Component Description
_____________________
**ON A/C 001-049, 051-061, 101-105, 201-203,
(Ref. Fig. 001)
R **ON A/C 062-099, 106-149, 151-199, 204-299, 301-399, 401-499,
(Ref. Fig. 001A)
**ON A/C ALL
The RAT doors are made of a honeycomb core which is bonded between layers of prepreg sheets. The RAT doors have door operating links, P-section seals and piano hinges.
Each RAT door is attached to the RAT leg assembly via the door operating links. One end of the door operating link is connected to the insert assy of the doors. The other end is connected to a lug on the leg assembly.
A P-section seal is attached with screws to each door.
The piano hinges are attached with screws to each RAT door and to the
aircraft structure.
The insert assy installed in each RAT door is the pivotal point between the
door and the lug of the leg assembly. The insert assy is a movable support.
3. Operation
_________ The RAT doors open with the extension of the RAT. The door operating links push the doors open when the RAT extends. The links also close the doors when the RAT is retracted. The RAT is kept in the compartment with the RAT doors closed, the door operating links keep the doors in the closed position. The P-section seal closes the gap between the doors and the piano hinges let the doors open and close smoothly.
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