Last Updated：2025/12/07
(aviation, law) A regulation issued by the civil aviation authority of a country or region, generally in response to the discovery of an unsafe condition affecting particular aircraft, requiring that certain actions (such as specified modifications or enhanced maintenance or inspection requirements) be performed on these aircraft in order for them to remain legally airworthy.
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airworthiness directive
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Source Word
airworthiness directive
Noun
(aviation,
law)
A
regulation
issued
by
the
civil
aviation
authority
of
a
country
or
region,
generally
in
response
to
the
discovery
of
an
unsafe
condition
affecting
particular
aircraft,
requiring
that
certain
actions
(such
as
specified
modifications
or
enhanced
maintenance
or
inspection
requirements)
be
performed
on
these
aircraft
in
order
for
them
to
remain
legally
airworthy.
Japanese Meaning
航空当局が発行する、特定の航空機における安全上の問題を解消するために、必要な改造、検査または整備などの措置を行うことを求める行政または法的な命令（適航指令）としての意味。 / 航空及び法律の分野において、不安全な状態が発見された航空機に対して、法的効力を持つ是正措置を指示する規制。
Sense（1）
(aviation,
law)
A
regulation
issued
by
the
civil
aviation
authority
of
a
country
or
region,
generally
in
response
to
the
discovery
of
an
unsafe
condition
affecting
particular
aircraft,
requiring
that
certain
actions
(such
as
specified
modifications
or
enhanced
maintenance
or
inspection
requirements)
be
performed
on
these
aircraft
in
order
for
them
to
remain
legally
airworthy.
（ plural ）
