ASME B30.12-2006 pdf – Handling Loads Suspended From Rotorcraft.
(d) wind gusting or direction makes controllability of the rotorcraft or external load difficult
(e) any ground-based or airborne debris becomes hazardous and could cause damage to the rotorcraft or cause injury to persons or property on the ground
(f) any caution or warning light(s) or other device(s) or gage(s) within the rotorcraft indicate possible mechanical problems
‘g) actions or inaction on behalf of rotorcraft ground crews or others involved in the operations endanger themselves or others
(h) atmospheric condition changes create an adverse effect on the performance of the rotorcraft
(i) damage is suspected or otherwise sustained by rigging used for airlifting that could affect its use
(j) crowd control becomes ineffective, and persons are subject to dangerous conditions
12-4.4.11 Evacuation
When rotorcraft operations include airlifting loads onto, or into, a building or building courtyard (congested area), all persons, except those working with the rotorcraft, shall be vacated along the flight path of the rotorcraft. Occupied structures along the path shall be evaluated by the rotorcraft operator as to whether or not the occupants within need to be vacated (see para.
12-4.4.12 Operating Near Electrical Power Lines
If possible, the owner of the lines or their authorized representative shall be notified of the operation, and, if necessary, the lines shall be deenergized. There shall be a minimum clearance of at least 15 ft (4.6 m) between any energized power line, rated 50 kV or below, and any part of the rotorcraft load combination. This minimum clearance requirement shall increase proportionally to the increase in voltage of the line at the rate of 0.5 in. (12.7 mm) for each increase of 1 kV.
EXCEPTION: These minimum clearances shall not apply to rotorcraft or NHEC or HEC loads specifically designed and intended for use in power line inspection, maintenance, and repair.
12-4.4.13 Pre-Job Coordination: Pilot-in-Command and Signalperson(s)
Before any external load operations are conducted, the rotorcraft pilot-in-command and signal-person(s) shall confer and agree upon the following:
(a) the position (or placement) the signalperson will assume so the signalperson can readily observe the hook-up/setting ground crew and load for pickup or delivery and still be seen or heard by the pilot
(b) type of communications to be used for the specific operation, i.e., hand signals, ground-to-air radio, intercom or relay signals, or a combination of them
(c) the use of hand signals shown in Fig. 9 and any additional agreed upon signals that would be used for the specific operation for safety or efficiency
(d) alternative procedures to be followed if communications or sight become ineffective or are lost between the pilot-in-command and signalperson(s)
(e) distinguishing clothes, high_visibility safety vests, or gloves to be worn by the appointed signalperson(s). Only these designated individuals shall be authorized to give hand signals to the pilot-in-command
(f) procedures to be used and followed if any unforeseen hazards develop
(‘g) audible or other appropriate signals that should be used as a warning to ground crews working with the rotorcraft during external load operations
12-4.4.14 Pre-Job Coordination: Rotorcraft Operator and Contractor
Where applicable, the rotorcraft operator’s representative and responsible contractor’s representative shall have a pre-job conference or communication for the purposes of coordination. This conference or commanication shall cover, as a minimum, the following:
(a) precautions to be in effect at the rotorcraft landing area, pickup area, route to be flown, and delivery (setting) area and arrangements for compliance with any other mutual requirements, including preparation, submission, and FAA or other regulatory approval of any required lift plan
(b) design, strength, and quantity of rigging and how it will attach to the load [see Section 12-2.4 and paras. 12-2.4.1 through 12-2.4.3(e)].