AMC1 SPA.HEMS.125(b)(4) Performance requirements for HEMS
operations
HEMS OPERATING SITE DIMENSIONS
(a) When selecting a HEMS operating site it should have a minimum dimension of at least 2 x D (the largest dimensions of the helicopter when the rotors are turning). For night operations, unsurveyed HEMS operating sites should have dimensions of at least 4 x D in length and 2 x D in width.
(b) For night operations, the illumination may be either from the ground or from the helicopter.
[applicable until 24 May 2024
— ED Decision 2012/019/R]
AMC1 SPA.HEMS.125(c)(4) Performance requirements for HEMS operations
ED Decision 2023/007/R
CRITERIA FOR THE HEMS OPERATING SITE
(a) In order to
select a HEMS operating site from the air, the operator should define either:
(1) minimum
HEMS operating site dimensions of at least 2 × D by day (the largest
dimensions of the helicopter when the rotors are turning) and at least 4 × D
in length and 2 × D in width by night, to be estimated by the crew from the
air; or
(2) alternative
criteria for the HEMS operating site together with operating procedures and
training, which mitigate the risks identified in the operator’s risk
assessment. In this case the operator may choose not to define minimum site
dimensions. By night, for operations other than HEC, the HEMS operating site
should include an area that the crew estimates to be least at least 4 × D in
length and 2 × D in width, which should be free of relevant obstacles.
(b) The
pre-surveyed HEMS operating site dimensions should be at least 2 × D.
(c) The
operator may provide guidelines to its commanders on whether to land, proceed
with e.g. a one-skid landing, hover landing or proceed with HEMS HEC
operations. The commander should decide which technique to employ.
(d) Before
operating at a HEMS operating site, the commander should estimate whether it
is suitable for safe operations based on the above and on the environmental
conditions.
[applicable from 25 May 2024 — ED Decision
2023/007/R]
EASA HEMS operations require suitable landing sites. Minimum dimensions are twice the helicopter's rotor diameter (2xD) by day. Night operations on unsurveyed sites need 4xD length and 2xD width, with lighting from ground or helicopter. Alternatively, operators can define criteria with risk mitigation procedures, ensuring safe helicopter emergency medical services.
* Summary by Aviation.Bot - Always consult the original document for the most accurate information.
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