7-20 Hoisting
CAUTION
Avoid hoisting helicopter in windy conditions.
CAUTION
Verify ground is free of water, oil, solvent, grease, or residue
that could cause equipment or personnel to slip during hoisting
procedure.
CAUTION
Remain clear of area beneath helicopter when helicopter is raised.
Minimize personnel movement around raised helicopter.
A. Hoisting with Lifting Fixture
1. Refer to Figure 7-2. Verify hoisting equipment has minimum load capacity of 3000 lbs.
2. Position main rotor hub directly under hoist to minimize helicopter swing once aloft.
3. Remove two spring pins and four nylon bushings from MT527-1 lifting fixture and install
bushings in main rotor hub lightening holes. Position lifting fixture on hub then insert
spring pins through fixture and bushings until pins lock. Verify security.
4. Connect hoist to lifting fixture. Verify security.
5. Stabilize helicopter as required by guiding tail skid, but do not exert force (tail skid is
secondary structure). Raise helicopter to required height.
B. Hoisting with Nylon Rope
1. Refer to Figure 7-2. Verify hoisting equipment has minimum load capacity of 3000 lbs.
Verify minimum work load limit for 1-inch diameter twisted or double braided (preferred)
soft nylon rope is 3000 lbs.
2. Position main rotor hub directly under hoist to minimize helicopter swing once aloft.
3. Insert rope through main rotor hub lightening holes, form a double loop, and knot ends.
Connect hoist to nylon rope. Verify security.
4. Stabilize helicopter as required by guiding tail skid, but do not exert force (tail skid is
secondary structure). Raise helicopter to required height.
25 OCT 2010 R66 Maintenance Manual Chapter 7 Jacking and Hoisting Page 7.5
To Next Page
Loading...