CAUTION: BE CAREFUL IF YOU DO NOT USE SAFETY HOIST RINGS. YOU CAN USE EYEBOLTS ONLY WHEN YOU HAVE A STRAIGHT AXIAL LOAD. THIS IS THE CONDITION WHEN YOU USE A SPREADER BAR. YOU DECREASE THE SAFE LOAD ON AN EYEBOLT (PLANE OR SHOULDERED) BY MORE THAN 90 PERCENT WHEN YOU HAVE AN ANGULAR LOAD. YOU CAN HAVE A FAILURE (IN BENDING) AT THE THREADS.
G. Attach the fixture F70250-35 if it is available. You can also install safety hoist rings (5/16-inch diameter) in the holes from the removed bolts (Step 3).
H. Attach lines to the hoist rings and open the door with a crane or other equipment.
I. Hold the door in the open position with the door lock assembly. Put the assembly in the holes of the rod (hold-open rod) and the actuator body.
5. When you remove the cargo through the cargo door on the main deck, follow these precautions:
A. The attitude of the airplane is usually not level. All persons must be careful. There can be a sudden movement of the cargo when you remove the restraints.
B. You must schedule all changes in airplane loads for control of the CG. Thus, you must schedule the sequences that you use to remove the cargo and the fuel. Do not remove the cargo until you examine the CG of the last configuration of the airplane.
C. Be careful if you have a main landing gear (or two of them) extended while you remove the cargo. The airplane can suddenly move down on its aft section. If it is possible, remove the cargo from the aft compartments (lower and main deck) first. You can also have the opposite condition where the load on the nose gear becomes too high.
D. You can use a movable crane to remove the cargo if the door is in the full open position. With the door in this position, there is sufficient floor area to permit a satisfactory cargo connection to the crane (see Figure 2-28).
E. See the applicable documents (Weight and Balance Document and the Facility Planning Document) for the data that follows:
(1)
Cargo removal operations
(2)
Pallet and container descriptions
(3)
Airplane interior arrangements and clearances
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Figure 2-26 MAIN CARGO DOOR MANUAL OPERATION, 757-200PF AND -200 COMBI
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Figure 2-27 MAIN CARGO DOOR EXTERNAL OPENING, 757-200PF AND -200 COMBI
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MAIN DECK CARGO DOOR (757-200 COMBI AND PACKAGE FREIGHTER AIRPLANES ONLY) Page 2-63 Jul 01/2005 中國航空網 m.k6050.com 航空翻譯 www.aviation.cn 本文鏈接地址：757 Airplane Recovery Document 飛機恢復文件(49)
