Johnny Champion
Partner
Johnny is a commercial litigation partner with particular expertise in the aviation sector, helping aircraft lessors and financiers, airlines and operators, and high net worth individuals navigate regulatory challenges, and resolve complex disputes involving litigation in the English Courts and international arbitration.
Awards and recognition
Biography
Languages - English, Chinese (Cantonese, Mandarin)
Jurisdiction - England & Wales
He is one of the go-to individuals for technical “heavy metal” disputes involving aircraft engines and components, and has in-depth knowledge and experience guiding clients through disputes involving financing, leasing and maintenance of aircraft, including repossessions and redeliveries, working seamlessly with powerplant engineers, MROs and engine experts. Additionally, he advises airlines and operators on regulatory developments at an international, EU and domestic (UK) level, including in relation to airport slots, passenger rights and continuing airworthiness.
Clients value Johnny's proactive approach and legal precision, trusting him to resolve disputes commercially, efficiently and effectively. He is a fluent Cantonese speaker, and comprehends Mandarin and written Chinese.
Experience
-
Aviation Disputes & Aviation Regulation & Commercial
Advise and represent financiers, lessors, airlines, operators and owners on contentious issues concerning:
• Finance, operating and wet leases
• Pre-delivery and redelivery of aircraft
• MROs, suppliers and operational partners
• Airports, slots coordinator and ANSPs
Advise airlines and operators on regulatory issues concerning:
• Licencing, approvals and operational requirements
• Air operations and airworthiness
• Airport slots and traffic rights
• Consumer protection and passenger rights
• Advertising and ‘greenwashing’_____________________________________
Disputes: Finance, operating and wet leases
- Lessee / borrower defaults, including claims for outstanding rent, maintenance reserves, security deposit, indemnities, and under guarantees.
- Grounding, termination of leasing, and repossession of aircraft and engines following the occurrence of events of default.
- Restructuring and insolvency, including the Cape Town Convention remedies.
- Shop visits of engines, APUs and landing gears, and airframe C-Checks and structural repairs, including whether they qualify for reimbursement from accrued maintenance reserves / lessor maintenance contribution.
Disputes: Pre-delivery and redelivery of aircraft
- Pre-delivery payment (PDP) financing, sale and leaseback transactions, step in rights under aircraft purchase agreements, OEM delivery and passenger-to-freighter (P2F) conversion delays, including excusable and non-excusable delays.
- Compliance with return conditions, holdover rent, aircraft documents (including back-to-birth traceability), buy-out of redelivery conditions, return acceptance certificates, and de-registration and export.
Disputes: MROs, suppliers and operational partners
- Work performed by maintenance repair and overhaul (MRO) organisations, including whether costs within / excluded from NTE caps, liens (right of retention) asserted by MROs for alleged outstanding amounts, and threat to part-out / sell the aircraft.
- Manufacturing and production faults / defects, compliance with type certification and initial and continuing airworthiness concerns.
- Airport services agreements, grounding handling contracts, de-icing equipment maintenance contracts, and other supplier contracts, including under performance, complex payment reconciliation mechanisms, and exercise of termination rights.
Disputes: Airports, slots coordinator and ANSPs
- Airport and grounding handling fees and charges, including discriminatory pricing and state aid.
- Challenging sanctions and fines imposed by airport slots coordinator for alleged operation at times significantly different from allocated slots.
- Challenging air navigation charges imposed by ANSPs, and their failure to adequately resource and manage provision of ATC services.
_____________________________________
Regulation: Licensing, approvals and operational requirements
- Establishing subsidiary airline in the UK (including foreign ownership shareholding rules), foreign carrier permits, operating licences, air operator certificates, wet-lease in approvals.
- Flight and cabin crew and maintenance personnel licences, ramp inspections.
- Restructuring of Part-145 maintenance network in UK and across the EU.
Transportation of dangerous goods by air.
Regulation: Air operations and airworthiness
- Air operations and initial and continuing airworthiness requirements, including alternative means of compliance (AltMoCs), acceptable means of compliance (AMCs) and guidance materials (GMs).
- Continuing airworthiness management expositions (CAMEs), operation manuals, leasing manuals and white-lists.
- Airworthiness directives (ADs), service bulletins (SBs), and engineering orders (EOs).
Regulation: Airport slots and traffic rights
- Slots allocation and trading (transfers and swaps / exchanges), slot compliance monitoring and misuse of slots.
- Air traffic management issues.
- Route licenses, and impact of sanctions.
Regulation: Consumer protection and passenger rights
- Enforcement actions brought by Court Enforcement Agents, the UK Civil Aviation Authority (UK CAA), and EU Consumer Protection Network.
- Passenger compensation, including obligation to refund and pay damages for delays, denied boarding, and injury suffered.
- Disruptive passenger (DPAX) incidents, including associated civil and criminal actions.
- Conditions of carriage and booking terms, including misleading or unfair commercial practices that impact enforceability.
- Compliance with evolving EU and UK consumer protection regulations, including drip-pricing, no-show policies, and subscriptions terms.
Regulation: Advertising and ‘greenwashing’
- Proposed advertising campaigns, including compliance with advertising standards and codes, and approvals from Clearcast.
- Investigations brought by UK Advertising Standards Authority into alleged misleading campaigns, notably, in respect of airlines’ sustainability initiatives / ‘green’ credentials.
NEWS AND INSIGHTS
Stephenson Harwood attending IBA Annual Conference 2026 in Copenhagen
Stephenson Harwood Energy Transition Insights 2026
Atlantic Joint Business Agreement - a competitive undertaking
Legal and practical considerations concerning cross border repossessions of leased aircraft
AIRSPEED READ - NATS (En Route) Plc – Consultation on changes to NERL License terms – Closes on 1 October 2025
The future of flight - Sustainable Aviation Fuel
When is "Sustainable Aviation Fuel" not sustainable?