5.
Be careful if you use wood beams (cross ties). You must use a layer of wood (plywood) or other material on top of the beams. This procedure divides the load of the airplane to many beams while the airplane moves. If you do not use this procedure, the large airplane load can push one beam down into the soil. This lower beam can cause a blockage and stop the movement of the airplane.
6.
Put tow vehicles on the near edge of the runway. Put a vehicle of the other type (winch vehicle) on the far edge of the runway.
7.
Tow the airplane from the main gears. See SECTION 4-20, for tow (and winch) procedures and for other limits (Figure 4-11 through Figure 4-14).
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AIRPLANE RECOVERY DOCUMENT
Figure 4-9 EXAMPLE OF A PREPARED SURFACE
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4-20 WHEN YOU TOW (OR WINCH) THE AIRPLANE 4-20-1 General
1.
This section shows how you can tow (or winch) an airplane on its own wheels.
When you winch the airplane, the movement is more controlled. Winching also provides a way to use a larger force to move the airplane (see Figure 4-22).
2.
You can tow the airplane with a towbar from the nose gear or the main gear. You can attach a towbar to the tow fitting on the front of the nose gear (see Figure 4-13). There is a tow eye on the front or the rear of the main gear (see Figure 4-14). For winching purposes, a cable or sling assembly can be attached to the airplane tow eye. See Figure 4-16 and Figure 4-17 for the approved tow loads.
CAUTION: DO NOT TOW WITH A DAMAGED NOSE GEAR. IF THE NOSE GEAR IS DAMAGED, TOW THE AIRPLANE ONLY FROM THE MAIN GEAR.
3. Tow the airplane from the nose gear with the towbar.
CAUTION: BEFORE YOU TOW THE AIRPLANE, YOU MUST LOCK THE LEVER OF THE NOSE GEAR STEERING METERING VALVE IN THE TOW POSITION USING A SPECIAL PIN P/ N A09003-1. WHEN THE LEVER IS LOCKED, THE NOSE GEAR CAN TURN A MAXIMUM OF 78 DEGREES. THIS TURN IS PERMITTED WHEN THERE IS PRESSURE IN THE HYDRAULIC SYSTEM. WHEN YOU MAKE A TURN LARGER THAN 78 DEGREES, YOU MUST DISCONNECT THE TORSION LINKS. MAKE SURE YOU PUT THE LINKS IN A SAFE POSITION.
A. Make sure that you install the downlock pins correctly (see Figure 4-1 and Figure 4-2).
(SEE Figure 4-12).
CAUTION: BE CAREFUL WITH THE COMPRESSED STRUTS. DAMAGE TO A STRUT CAN OCCUR IF YOU TOW THE AIRPLANE WHEN A STRUT IS FULLY COMPRESSED.
B. Make sure that the struts have the correct maintenance. Correctly inflate all the gear tires.
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