MINIMUM EQUIPMENT LISTS

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MINIMUM EQUIPMENT LISTS

• MEL

2
This defect was later deferred as per the
aircrafts MEL and flown back to base for repairs.
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• Advanced aircraft have redundancy built into
  every system.
• If an item becomes unserviceable its function is
  usually covered by an alternate system.
• Most of these aircraft have an approved list in
  order to operate with failed items not critical
  to flight.
• If approved operators may take advantage of a
  MEL system for aircraft with appropriate minimum
  equipment lists.
• The list must be carried on board as a required
  document and it is normally the pilots
  responsibility to reference and defer defects as
  applicable.
• An MEL allows an aircraft to be operated with
  unserviceable items as long as it is properly
  documented and any restrictions are followed.

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• When an item fails it is referenced in the
  aircraft MEL.
• If the item is found in the MEL it may be
  deferred as per the MEL.
• If the item is not listed in the MEL it may not
  be deferred unless it is considered a
  non-airworthiness item (entertainment system) and
  may be deferred as such.
• Each item will have a category classification
  which applies to the duration of allowed service
  before repairs must be completed.
• Any restrictions to operation will also be listed
  (VFR only).

5

• Restrictions and procedures involved with some
  MEL items may be quite involved, and requires
  careful attention.
• There will be a prescribed procedure to follow
  which will involve paperwork, logbook entry, and
  the application of MEL placards in the flight
  deck.
• Any restrictions listed in the MEL must be
  followed and the implications to each particular
  flight must be considered.
• If a pilot accepts an aircraft with existing
  deferred defects it is that pilots responsibility
  to ensure the proper paperwork and logbook
  entries have been completed. It is important to
  review all applicable restrictions and operating
  procedures associated with each MEL.
• Anytime multiple deferred defects exist or a new
  item is to be deferred it is important to
  crosscheck any restrictions with the previously
  deferred items to ensure there is no conflict or
  further limitations imposed by the multiple
  defects.
• Final responsibility for the safety of the flight
  always lies with the PIC.