International Federation of Airworthiness Proposal for On-Duty Time Aircraft Maintenance Techniciansand Aircraft Maintenance Engineers

ON-DUTY TIME LIMITATIONS AND REST REQUIREMENTS

A. OBJECTIVE AND SCOPE

1. To significantly enhance safety within the international aviation industry by
ensuring that individuals involved in the maintenance and certification of
AircraftandEngine airworthiness are adequately rested at the start of a duty
cycle.
2. To ensure certificated organizations support these safety goals involving duty
cycles and rest periods are achieved by implementing, the elements of this
policyand document, throughregulatory actions of Approved Safety
Management Systemsand the Laws and Regulations of the governing country.
3. A certificate holder shall establish on-duty time limitations and rest
schemes/protocols or “crew rest” forAircraft Maintenance Technicians (AMT)
and/or Aircraft Maintenance Engineers (AME), who are in their employ or
under contract to accomplish certification/airworthiness work aircraft/engines.

4. Acertificate holder shall ensure that:

a) The established on-duty and rest schemecomply with the parameters outlined
in this document.

b) The on-duty and rest scheme protocols of this document comply with any
applicablenational laws and/orpolicy and procedures.

c) Duty rosters are prepared and published a minimum of 14 days in advance,
optimally with in 21 days of the scheduled start of the on-duty requirement.

5. A Regulatory/Civil Aviation Authority may grant exemptions to the
requirements outlined in thisdocumentif it is necessary to support special
types of operations or to meet specificoperational needs as defined by the
applicable regulatory agency. When normal rest schemes must be wavered for
unusual situations, the certificate holder will establish alternativeprocedures
that must provide an equivalent level of safety to the maximum extent possible.
In additionexemptions or waivers are to be reviewed annually and must be part
of the approved Safety Management Systems document.

6. AnAMT or AME shall not participate in or accomplish airworthiness tasks if
suffering from fatigue or feels unfit to the extent that the performance of their
assigned duties could/mightcompromise airworthiness and/or establish levels
of safety.
7. AMT/AME (s) not in the employ or direct supervision of the company, but are
contractedtoperform covered maintenance tasks, (approved Maintenance
Program requirements), arerequired to comply with this directive or the
approved on-duty/rest requirements of the certificated companywhom they are
performing the work for.

B.DEFINITIONS

1.The Company – Certificate Holder:

A certificated holder, authorized to perform Aircraft and /or Engine work and
certification of aviation equipment either through an approved Safety
Management System or regulatory approved processes has the responsibility for
the safety of its employees and the aircraft and Engines that they may work on.
This includes the requirement to insure on-duty and rest requirement enumerated
in this policy are implemented for employees and executed by any contractor
performing certification work on their aircraft or engines.

2. The Aircraft Maintenance Technician/Aircraft Maintenance Engineer:

a) Responsibility for the establishment and control of AMT/AME employees’ on-duty hours and rest times does not solely rest with the company/employer. Engineers and Maintenance individuals have a responsibility to make optimum use of the opportunities andfacilities for rest periods provided. They are also responsible for planning and using their rest periods properly in order to minimize incurring fatigue. They shall not act in their duties ifthey know or suspect that their physical or mental condition renders them unfit to function safely. Furthermore they are not to work if they know they are or are likely to be in breach of the company or approved procedures. b) An AMT/AME isan individual certified and qualified, under approved company policies or contract to perform aircraft/engine maintenance, certification and/or inspection of maintenance including that of performing in a supervisory role.

3.On-Duty period:

a) No scheduled shift should exceed 12 hours.
b) No shift should be extended beyond a total of sixteen (16) hours, including overtime.

c) Scheduled on-duty work, including break time(s), standby and overtime,
should not toexceed a maximum of 72 hours in any successive seven (7) day
period.
d) A maximum of four (4) hours work before a break. However, refer to
Paragraph 3), e).
e) Minimum break period (s) of ten (:10) minutes, plus five (:05) minutes for
each hour worked, to a maximum of thirty (:30) minutes should be scheduled
and utilized. The process begins after every thirty (:30) minute break is taken.
f) Scheduled Night shifts should be limited to no more than six (6) days in each
seven (7) calendar days of eight (8) hour durations, or 4 days in each seven
(7) calendar days of twelve (12) hourdurations, including over time.
g) Night shifts involving twelve (12) hours on-duty, including breaks and
overtime, must allow a minimum of nine (9) hours opportunity of uninterrupted
rest prior to reporting to the next scheduled shift start time.
h) Normal shifts of eight (8) hours on-duty, five (5) days in each seven (7)
calendar daysshouldallow a minimum of nine (9) hours of uninterrupted
opportunity for rest prior to the reporting to the next scheduled shift start time.
Also refer to paragraph B. 2.a) of this document.
i) Night shifts should be scheduled to end not later than 08:00 local time.
j) Morning/day shifts should not be scheduled to start before 06:00 local time and
wheneverpossible should be delayed to start between 07:00 and 08:00 local
time.

l) Holders of certificates for airline operations and Repair stations/facilities and
others whom employ AMT/AME personnel should consider developing risk
management systems and annual training programs to address Human fatigue
elements and mitigation of risk by applying approved Safety Management
Systems and procedures.
4. Rest Period (s):
1. Rest period is an uninterrupted and defined period of time during which an
individual is free of all duties and/or standby. It will allow the opportunity for
a minimum of eight (8)hours of interrupted sleep before reporting to the next
scheduled on-duty time. Also it should include aminimum of two (2) days –24
continuous hours, between each scheduled weekly on-duty period.Such as;
Five (5) consecutive day shifts, 4 consecutive twelve (12) hour night shifts
etc.)

5. Window of Circadian Low (WOCL):
1.The window of Circadian Low is the period between 02:00 hours and
05:00 hour home baselocal time. Within the time band of three time zones
the WOCL refers to a home base time.Beyond these three time zones the
WOCL refers to home base time for the first 24hours after arrival at a work
location, other than home base, and to local time thereafter.

C. Unforeseen Circumstances in Operations – Management –
Discretion:
1. Daily scheduled operations, which start at shift reporting time, the limits
reflected for on-duty time and rest periods prescribed in this document may be
modified inthe event of unforeseen/emergency circumstances. Any such
modifications must be reviewed and approved by the responsible
senior management individual on-duty at the working location and with all
laborrepresentatives or senior labor individual at the working location and
must be in accordance with National laws, procedures and approved Safety
Management System procedures.

D. On-Duty and Rest Periods Documentation/or Records.

1. A certificate holder shall ensure that sufficiently detailed records for
AMT/AME and contract personnel, providing certified maintenance work,
are available for review for a preceding six (6) month time period. These
records should provide proof and/or substantiation of the adherence to the
procedures outlined in this document, national authority procedures to
include approved Safety Management System of the certificate holder.
Submitted for TC/EC Review by, Frank Jauregui, April 4, 2007

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