Bell 206L Rotorcraft Flight Manual Supplement page 11

2. NORMAL PROCEDURES
Un-Commanded Release Due to Nylon Type Straps
Nylon type straps (or similar material) must not be used
directly on the cargo hook load beam as they have a
tendency to creep under the keeper and fall free. If nylon
straps must be used they should first be attached to a
correctly sized primary ring. Only the primary ring should
be in contact with the cargo hook load beam. See example
below.
Figure 4
, continued
Rotorcraft Flight
Manual Supplement
Bell 206L/407 Cargo Hook Kit
Document Number
Rev. 0
121-044-00
FAA Approved
Page
11 of 15