(2)
Make sure the equipment (cables, slings, shackles) has the correct dimensions. Also make sure the equipment has the correct capacity. The tow equipment must have a factor of safety (rated load to ultimate load) of five.
(3)
Always use load indicating devices or some type of shear link in the tow lines to monitor the load being applied. These devices and the tow cables should be installed with safety. System failure should not cause a loose tow cable or airplane part to become a dangerous projectile.
(4)
If you use the landing gears, mechanically lock them in the DOWN position with DOWNLOCK PINS
2-20-1
PRECAUTIONS
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2-30 WEIGHT AND CENTER OF GRAVITY (CG) MANAGEMENT 2-30-1 General
1.
You must make an accurate weight and CG analysis of the airplane. This gives you the correct positions and capacity for the lifting and transporting equipment.
2.
When it is possible, decrease the total airplane weight to the lowest quantity. You can remove the fuel, cargo, water and oil. Possibly, you can remove large airplane parts. It is possible to do the recovery without these decreases in weight. This is a decision that is different for each incident.
3.
In this document the REW (Recoverable Empty Weight) is the lowest possible airplane weight (described in SUBJECT 2-30-2, Item F.) you can get quickly without long removal procedures. This is the basic weight for CG analysis. Usually, you do not remove airplane equipment, large airplane parts or fluids that are in a closed system.
NOTE: IT IS REALIZED THAT IN SOME INSTANCES RECOVERY CAN BE MADE WITH FUEL AND/OR CARGO ABOARD. FOR SAFETY, WE NORMALLY RECOMMEND THAT THE AIRPLANE BE DEFUELED FIRST. THIS DETERMINATION MUST BE MADE AFTER A REVIEW OF THE CONDITIONS.
4.
You can make the weight and CG analysis when you have the REW configuration. We recommend using the data and procedures provided in SUBJECT 2-30-2, SUBJECT 2-30-3 and SUBJECT 2-30-4, for this analysis.
5.
If the REW configuration is not possible, you must keep accurate records of all the airplane components. These can be components that you cannot find on the airplane after the landing. Your records must show the weight of each component and its effect on the airplane CG location. Then you must calculate the full airplane weight and CG location to find the load at each jack point. Also, you must make sure that the airplane CG location is in a safe range.
2-30-1
GENERAL
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2-30-2 Weight Definitions
1. Use these weight definitions and abbreviations for the airplane recovery.
A. The MTGW (Maximum Taxi Gross Weight) is the maximum airplane weight permitted when you operate the airplane on the ground. This weight is controlled by airplane strength limits and airworthiness limits. (It includes the weight of taxi fuel and runup fuel.)
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