Patton, Moreno & Asvat is the firm that represents the Republic of Panama within the L2B Group, an international association ranked by Chambers & Partners as a leading association of law firms in the Aeronautical field.

We represent to the main airlines, both commercial and private, creditors, lessors, lessees, mortgage creditors, and other actors in the aeronautics industry.
Within the advisory services we offer to airlines and private entities involved in civil aviation, we can mention:

  • Aircraft Financing.
  • Aircraft Registration.
  • Registration of Mortgages on Aircraft or parts and Security Documents.
  • Aircraft Purchase/Sale Agreements.
  • Aircraft Leasing Agreements.
  • Counseling, management, approval and securing of operation permits, Exploitation Certificates of Commercial Aeronavigation Services for entities in diverse modalities (Transportation or Work Onboard), Operation Certificates for entities, fee schedules and general counseling in so far as transportation conditions, passengers, cargo and limits of responsibility, among others.
  • Handling of claims and commercial or civil disputes related to the matters herein listed by means of our litigation department.
  • Administrative Proceedings before the Civil Aeronautics General Bureau of the Republic of Panama.


Our partner María de Lourdes Marengo, leader of the area, is the author of the Panama chapter of “Aviation Finance & Leasing 2014, 2015, 2016 and 2017”, published by Getting the Deal Through, Law Business Research, England. She is also the author of "Aircraft Liens and Detention Rights" published by the renowned publisher Sweet & Maxwell.

She has been lecturer at the annual meeting of the L2B Group in Miami, Florida, on the current situation of Aeronautical Law in the Republic of Panama. She is also an active member of the International Aviation Womens Association (IAWA) Dr. Brett Patton, founding partner, is the author of the chapter "Aircraft Finance: Registration, Security and Enforcement", also specialized in Panamanian jurisdiction, by the editors Richard Hames and Graham McBain, a world-wide English publication.


Facts on the Aeronautical Law in Panama:

  • Panama documents not have an open registry.
  • In order for an aircraft to be registered, it must operate from Panama.
  • Panama has 300 aircraft registered in the Civil Aeronautics Board.
  • Currently, Panamanian authorities assure that they are taking steps to recover the FAA’s Class 1 status.
  • In an effort to modernize and comply with standards, the Civil Aeronautics Board by Resolution No. 079-JD dated June 18th 2002, enacts books I, II, III, IV, V, VI, VII, VIII, IX, X, XI, XII, XIII, XIV, XV, XVI, XVII, XVIII and XIX of the Republic of Panama’s Civil Aviation Regulations.
  • By means of Law No. 31 dated June 19th 2002, the Republic of Panama enacts the Agreement for the Unification of Certain Rules for the International Air Transportation effected in Montreal on May 28th 1999.



María de Lourdes Marengo -