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is likely to interfere with the safe operation of an aircraft or
with the safe performance of duties.
Note.— Use of herbal medication and alternative treatment
modalities requires particular attention to possible side-effects.
6.2.3 Visual acuity test requirements
6.2.3.1 The methods in use for the measurement of visual
acuity are likely to lead to differing evaluations. To achieve
uniformity, therefore, Contracting States shall ensure that
equivalence in the methods of evaluation be obtained.
6.2.3.2 Recommendation.— The following should be
adopted for tests of visual acuity:
a) Visual acuity tests should be conducted in an environment
with a level of illumination that corresponds to
ordinary office illumination (30-60 cd/m2).
b) Visual acuity should be measured by means of a series of
Landolt rings or similar optotypes, placed at a distance
from the applicant appropriate to the method of testing
adopted.
6.2.4 Colour perception requirements
6.2.4.1 Contracting States shall use such methods of
examination as will guarantee reliable testing of colour
perception.
6.2.4.2 The applicant shall be required to demonstrate the
ability to perceive readily those colours the perception of
which is necessary for the safe performance of duties.
6.2.4.3 The applicant shall be tested for the ability to correctly
identify a series of pseudoisochromatic plates in daylight
or in artificial light of the same colour temperature such as that
provided by CIE standard illuminants C or D65 as specified by
the International Commission on Illumination (CIE).
6.2.4.4 An applicant obtaining a satisfactory result as
prescribed by the Licensing Authority shall be assessed as fit.
An applicant failing to obtain a satisfactory result in such a test
shall be assessed as unfit unless able to readily distinguish the
colours used in air navigation and correctly identify aviation
coloured lights. Applicants who fail to meet these criteria shall
be assessed as unfit except for Class 2 assessment with the
following restriction: valid daytime only.
Note.— Guidance on suitable methods of assessing colour
vision is contained in the Manual of Civil Aviation Medicine
(Doc 8984).
6.2.4.4.1 Recommendation.— Sunglasses worn during
the exercise of the privileges of the licence or rating held
should be non-polarizing and of a neutral grey tint.
6.2.5 Hearing test requirements
6.2.5.1 Contracting States shall use such methods of
examination as will guarantee reliable testing of hearing.
6.2.5.2 Applicants shall be required to demonstrate a
hearing performance sufficient for the safe exercise of their
licence and rating privileges.
6.2.5.3 Applicants for Class 1 Medical Assessments shall
be tested by pure-tone audiometry at first issue of the Assessment,
not less than once every five years up to the age of
40 years, and thereafter not less than once every two years.
6.2.5.3.1 Alternatively, other methods providing equivalent
results may be used.
6.2.5.4 Applicants for Class 3 Medical Assessments shall
be tested by pure-tone audiometry at first issue of the Assessment,
not less than once every four years up to the age of
40 years, and thereafter not less than once every two years.
6.2.5.4.1 Alternatively, other methods providing equivalent
results may be used.
6.2.5.5 Recommendation.— Applicants for Class 2 Medical
Assessment should be tested by pure-tone audiometry at first
issue of the Assessment and, after the age of 50 years, not less
than once every two years.
6.2.5.6 At medical examinations, other than those
mentioned in 6.2.5.3, 6.2.5.4 and 6.2.5.5, where audiometry is
not performed, applicants shall be tested in a quiet room by
whispered and spoken voice tests.
Chapter 6 Annex 1 — Personnel Licensing
6-3 23/11/06
Note 1.— The reference zero for calibration of pure-tone
audiometers is that of the pertinent Standards of the current
edition of the Audiometric Test Methods, published by the
International Organization for Standardization (ISO).
Note 2.— For the purpose of testing hearing in accordance
with the requirements, a quiet room is a room in which the
intensity of the background noise is less than 35 dB(A).
Note 3.— For the purpose of testing hearing in accordance
with the requirements, the sound level of an average conversational
voice at 1 m from the point of output (lower lip of
the speaker) is c. 60 dB(A) and that of a whispered voice
c. 45dB(A). At 2 m from the speaker, the sound level is 6 dB(A)
lower.
Note 4.— Guidance on assessment of applicants who use
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Manual of Civil Aviation Medicine 1(28)
