EASA SIB No.: 2018-XX
Safety Information Bulletin
Operations
SIB No.: 2018-XX
Issued: dd Month YYYY
Subject: Blood Alcohol Concentration Limits for General Aviation Pilots
Ref. Publications:
- Regulation (EC) No 216/2008 (hereinafter referred to as the Basic Regulation).
- Commission Regulation (EU) No 965/2012 (hereinafter referred to as the Air Operations
Regulation).
- Commission Regulation (EU) No 1178/2011 (hereinafter referred to as the Aircrew Regulation).
- Commission Implementing Regulation (EU) No 923/2012 (hereinafter referred to as the Rules
of the Air Regulation).
Applicability:
General Aviation pilots, aero clubs, pilot training organisations and EASA Member States’
competent authorities.
Description:
Several air accident investigation reports concerning General Aviation flights refer to alcohol
intake by the operating pilot before the flight. The aim of this SIB is to provide guidelines on blood
alcohol concentration levels which should not be exceeded by operating pilots in General Aviation,
including non-commercial aerial work.
Alcohol (ethanol) is rapidly absorbed from the stomach and small intestine, and transported by the
blood throughout the body. The majority of adverse effects produced by alcohol relate to the
brain, the eyes, and the inner ear. Brain effects include impaired reaction time, reasoning,
judgement, and memory. Alcohol decreases the ability of the brain to make use of oxygen. This
adverse effect can be magnified as a result of simultaneous exposure to altitude. Visual symptoms
include eye muscle imbalance, which leads to double vision and difficulty focusing. Inner ear
effects include dizziness, and decreased hearing perception.
If other variables are added, such as sleep deprivation, fatigue, medication use, altitude hypoxia,
or flying at night or in bad weather, the negative effects on the individual’s performance will be
significantly magnified. It should be noted that the accident risk evolves more than linearly with
alcohol quantity.
According to the Basic Regulation, ‘A crew member must not perform allocated duties on board an
aircraft when under the influence of psychoactive substances or alcohol or when unfit due to
injury, fatigue, medication, sickness or other similar causes’. The related implementing rules are
provided in the Air Operations1 and Rules of the Air Regulations2.
1 NCC.GEN.105(e)(2), NCO.SPEC.115(e)(2), SPO.GEN.105(e)(2), NCO.GEN.105(a)(5)
2 SERA.2020
This is information only. Recommendations are not mandatory.
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An agency of the European Union
EASA SIB No.: 2018-XX
In addition, the pilot-in-command shall comply with the laws, regulations and procedures of those
States where operations are conducted3. National legislation exists in some EASA Member States,
which stipulates maximum limits for blood alcohol concentration levels for operating pilots.
The following provisions in the Aircrew Regulation are also applicable:
- The effects of alcohol on a pilot’s performance are included in the syllabus of theoretical
knowledge for the Private Pilot Licence4.
- It is the responsibility of licence holders not to exercise the privileges of their licence at any
time when they are aware of any decrease in their medical fitness which might render them
unable to safely exercise those privileges5.
- The competent authority shall limit, suspend or revoke a pilot licence if the pilot is exercising
the privileges of his or her licence when adversely affected by alcohol or drugs6.
At this time, the safety concern described in this SIB does not warrant the issuance of an
operational directive under Regulation (EU) 965/2012, Annex II, ARO.GEN.135(c).
Recommendation(s):
A pilot must not operate an aircraft when under the influence of alcohol. This Basic Regulation
requirement should be understood as follows:
1) The blood alcohol concentration (BAC) should not exceed the lower of the national
requirements, or 0.02%, which is 0.2 grams of alcohol per litre of blood, whilst performing
duties related to operating an aircraft, including flight preparation.
2) The breath alcohol concentration (BrAC) should not exceed the lower of the national
requirements, or 90 micrograms of alcohol per litre of breath, whilst performing duties related
to operating an aircraft, including flight preparation.
3) Alcohol should not be consumed within 8 hours of performing duties related to operating an
aircraft, including flight preparation. It should be noted that 8 hours ‘from bottle to throttle’
does not guarantee that the individual’s BAC/BrAC will be below the above-mentioned limits.
It is, therefore, recommended to wait for 24 hours from the last intake of alcohol before
performing duties related to operating an aircraft.
4) Alcohol should not be consumed whilst performing duties related to operating an aircraft,
including flight preparation, or immediately after an aircraft accident or a serious incident.
Pilot training organisations and aero clubs should consider these recommendations under their
risk management responsibilities. Competent authorities should consider these recommendations
during their continuing oversight of General Aviation pilots operating under their responsibility.
Contact(s):
For further information contact the EASA Safety Information Section, Certification Directorate.
E-mail:
[email protected].
3 NCC.GEN.110(a), NCO.GEN.110(a), NCO.SPEC.110(d), and SPO.GEN.110
4 AMC1 FCL.210; FCL.215
5 MED.A.020
6 ARA.FCL.250 (a)(4)
This is information only. Recommendations are not mandatory.
TE.CAP.00117-006 © European Aviation Safety Agency. All rights reserved. ISO9001 Certified. Page 2 of 2
Proprietary document. Copies are not controlled. Confirm revision status through the EASA-Internet/Intranet.
An agency of the European Union
Dear Madam/Sir,
Please find attached hereto a preliminary draft for an EASA Safety Information Bulletin (SIB) 2018-XX
[task 2018.010] regarding
Blood Alcohol Concentration Limits for General Aviation Pilots
for consultation until 09 April 2018.
The Agency is considering taking additional steps to target the GA pilot community using the established
channels.
We would be grateful to you if you could send any comment(s) to
[email protected] by making
reference to [task 2018.010], no later than the above-mentioned deadline.
Safety Information Section Email:
[email protected]
EASA Website
(Attachment is in Acrobat PDF format)
Postal: Postfach 10 12 53, 50452 Cologne, Germany
An agency of the European Union
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