The leading

Aviation Law Firm in Latin America

SIERRA LATAM

We believe in high quality legal advice

High quality legal advice, equivalent to such in the most sophisticated legal service markets. We want you to realize that Mexico is equipped with world-class legal advisors who are willing and able to represent your business with care, professionalism and with in-depth knowledge of the law.

The ability and training of our lawyers and staff is paramount. We are deeply proud to be the standard bearer of aeronautical law in Mexico.

WHAT WE DO

Our Areas of expertise

Our firm is proud to provide its services in various areas of specialization to companies and entities from around the world looking to resolve their legal needs and requirements in Mexico.

Aviation Law

Aircraft finance & Leasing

Litigation, Arbitration
& Mediation

Corporate Law, Joint Ventures, M&A, Foreign Investment & Corporate Governance

Other areas of expertise

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The Mexican government published the new General Water Law in the Official Gazette, establishing water as a protected human right and prohibiting full service cuts even in cases of nonpayment. The framework orders the creation of a long term National Water Strategy led by Conagua and IMTA with mandatory reviews and projections to guide national policy.

The reform also modifies the National Waters Law to introduce planning tools, diagnostics, and indicators focused on inequality reduction, adaptation, and risk management. The publication formalizes the legislative package approved by Congress and activates federal obligations for long term water governance.
SOURCE: https://www.jornada.com.mx/noticia/2025/12/11/politica/publica-dof-la-ley-general-de-aguas-y-la-reforma-a-la-ley-de-aguas-nacionales
 #Mexico #WaterPolicy #DOF #Conagua #NationalReform
Mexico’s lower house committees approved a proposal to impose new import tariffs on China and countries without trade agreements with Mexico. The measure covers over 1,463 tariff categories, with rates ranging from 10% to 50%, and 316 products that previously paid no duties would now be taxed.

The tariff list includes textiles, clothing, appliances, plastic goods, hygiene products, cosmetics, furniture, motorcycles, auto parts and more. The reform seeks to shield local industry from low-priced imports and could take effect on January 1, 2026 if passed by the full Chamber.

SOURCE: https://www.elfinanciero.com.mx/nacional/2025/12/08/aprueban-en-comisiones-aranceles-a-china-estos-son-los-productos-que-tendran-nuevo-gravamen/
 #Tariffs #China #TradePolicy #MexicoEconomy #Imports #Manufacturing #LawReform #Commerce #IndustryProtection #AsiaTrade
Mexico’s Ministry of Finance confirmed that no fiscal reform will be introduced until authorities first complete the expansion of the taxpayer base and strengthen collection mechanisms already in place. The government argues that the priority is to ensure compliance among individuals and companies who are legally obligated to pay taxes but currently do not, believing there is still significant room to increase revenue through administrative measures.

Officials recalled that the 2013 reform raised tax collection from 10 percent to 12 percent of GDP, and maintain that recent controls, anti-invoice-evasion efforts, and upcoming adjustments within the 2026 economic package could deliver similar results without modifying the tax structure itself.

SOURCE: eleconomista.com.mx
#ReformaFiscal #Hacienda #Recaudación #SHCP #Impuestos #Economía #México #FinanzasPúblicas #PaqueteEconómico #basecontribuyentesnoconfiables
AFAC (Agencia Federal de Aviación Civil) confirmed that the required software updates on Airbus aircraft have been “successfully” completed on 183 airplanes belonging to Mexican airlines. The update involved verifying and supervising the flight-control software on Airbus A319, A320 and A321 models. 

AFAC specified that the fleet under maintenance included 183 aircraft that underwent the procedures and that everything proceeded as scheduled without major disruptions to national air operations. AFAC also indicated it will maintain continuous oversight to ensure that the technical measures remain properly implemented.

SOURCE: https://lopezdoriga.com/nacional/afac-confirma-actualizaciones-airbus-concluyeron-183-aviones/
 #AviationSafety #AirbusUpdate #MexicoAviation #AFAC #FlightControls #AircraftMaintenance #AirlineSafety #AirbusA320 #AviationNews #mexicoairspace
Airbus has initiated a global recall covering roughly 6,000 aircraft from the A320 family after a flight control malfunction raised significant safety concerns. The issue involves a software vulnerability in the ELAC flight control computers that can corrupt critical data under strong solar radiation, making an immediate software rollback mandatory across affected fleets.

The decision follows a A320 incident on October 30 in which the aircraft suddenly lost altitude and was forced to perform an emergency landing. Aviation regulators have demanded rapid corrective action while airlines worldwide prepare for operational disruptions due to grounding, maintenance bottlenecks, and high travel demand.

SOURCE: https://www.reuters.com/business/aerospace-defense/airbus-issues-major-a320-recall-after-flight-control-incident-2025-11-28/

#Airbus #AviationSafety #A320Family #FlightControl #globalairlines
The Mexican Senate approved a reform to the Federal Labor Law granting federal and state labor authorities explicit power to conduct inspections focused on verifying real salary equality between men and women. The measure formalizes enforcement of the principle equal pay for equal work and requires inspections to be carried out with a gender perspective.

Authorities will be able to review payrolls, interview employees, and evaluate internal practices to detect discriminatory wage gaps. The reform seeks to translate Mexico’s equality commitments into practical oversight and moves next to the Chamber of Deputies for final approval.

SOURCE: https://www.eleconomista.com.mx/capital-humano/5-claves-reforma-inspecciones-igualdad-salarial-aprobada-senado-20251127-788482.html

#EqualPay #LaborLaw #Mexico #GenderEquality #workplacerights
Mexico’s President Claudia Sheinbaum announced that her administration will return take-off and landing slots at the Mexico City International Airport to U.S. airlines. The decision responds to pressure from Washington after the U.S. blocked 13 Mexican routes as retaliation for Mexico’s previous effort to shift traffic toward AIFA. By reallocating slots back to U.S. carriers, Mexico seeks to comply with the bilateral aviation framework and ease tensions.

The move is also intended to revive AIFA by unlocking U.S. approvals for new flights while managing ongoing congestion at AICM. Analysts describe the adjustment as a calculated step: Mexico aims to restore balance with the U.S. while still promoting both airports and preventing further deterioration of bilateral aviation cooperation.

SOURCE: https://elpais.com/mexico/economia/2025-11-18/sheinbaum-devolvera-vuelos-a-las-aerolineas-estadounidenses-en-el-aicm-para-salvar-al-aifa.html
 #aviation #Mexico #USrelations #airport #AICM #aifa
Mexico’s 2026 customs reform updates more than one hundred fifty articles and accelerates the shift toward full digital control. It removes the option for customs agents to avoid responsibility when importers provide incomplete information and now requires document verification and operation materiality checks.

The reform also mandates a complete electronic file with tax receipts, transfers, contracts and traceability records, along with upgraded tech in customs facilities, real time monitoring, automated inventories, stronger financial guarantees and higher penalties for non compliance.

SOURCE: https://www.elfinanciero.com.mx/economia/2025/11/19/reforma-a-ley-aduanera-apuesta-por-lo-digital-estas-son-las-modificaciones-para-2026/

#Customs #MexicoTrade #Logistics #Digitalization #mexicoeconomy

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