Aircraft and Engine Transactions
MRO and Engine-Shop Agreements: Commercial Terms to Review
A maintenance quotation and a technical work scope do not always answer the same questions as the service agreement. Before an aircraft, engine or component enters a shop, the owner and provider should understand who can approve changes, what the price covers and what must be delivered when the work is complete.
Identify which documents control
Collect the quotation, work scope, purchase order, master agreement and incorporated terms. Check how the documents resolve conflicts and whether later work orders can change negotiated provisions. A short acceptance email may incorporate terms that deserve review before the asset is shipped or the work begins.
Identify the contracting provider, the location of the work and any proposed subcontractors. For an FAA-certificated repair station, section 145.201 ties permitted work to its ratings, operations specifications and other limitations. Confirm the relevant technical authority and capability through appropriate records and qualified advisers; a provider’s general description is not a substitute.
Define the work and the approval process
Separate included tasks from exclusions, optional work and findings that require additional authorization. Specify labor rates, parts pricing, administrative charges and any estimate assumptions. If disassembly is necessary to determine the final scope, agree what information will be supplied before further work is approved.
Identify authorized customer contacts and written approval limits. Set a process for revised estimates, supporting findings and the effect of changes on the schedule. The contract should explain what happens if the customer declines additional work, including charges already incurred and the condition in which the asset can be returned.
Address parts, custody and transportation
Document permitted parts categories and the records expected to support them, as determined with technical input. Address exchange units, core charges, removed parts, ownership and any authority to dispose of material. Do not leave the fate of a valuable removed component to an informal understanding.
Allocate responsibility for packing, shipping, preservation, storage and damage while the asset is in transit or custody. Review insurance and contractual risk allocation together. If the engine will move between a shop and a separate test facility, identify who arranges the transfer and who remains responsible for the coordination.
Make timing and testing measurable
Distinguish an estimated turnaround from a committed completion date. Identify the assumptions, customer deliverables and events that can change the schedule, such as additional findings or unavailable parts. Consider what notice and supporting information are required when a milestone is missed.
For test-cell work, specify the agreed test scope, criteria, reporting and treatment of an unsuccessful test or repeat run. Technical professionals should establish the applicable standards. The commercial agreement should allocate the resulting charges and decisions, including when retesting or further work requires new approval.
Connect redelivery, records and remedies
List the work reports, maintenance records and release documents to be supplied. Section 43.9 addresses maintenance-record entries and the scope of an approval for return to service; section 145.219 requires a certificated repair station to provide the owner or operator a copy of the maintenance release. Contractual deliverables may be more extensive than those regulatory requirements.
Review warranties, exclusions, notice requirements, repair remedies, payment conditions and dispute procedures as a whole. Address any asserted right to retain the asset or records for payment under the contract and applicable law. A maintenance release does not itself settle whether all commercial deliverables were provided or whether a warranty covers a later problem.
Frequently asked questions
Does a fixed quotation necessarily cover every finding after disassembly?
No. Review what the quotation includes, its exclusions and the change-approval process. The agreement should explain how additional findings affect the price and schedule.
Can a commercial acceptance replace an approval for return to service?
No. Contractual acceptance and the applicable technical approval address different matters. The agreement should identify the documents and responsible professionals needed for each.
Should the customer own all removed parts?
That question should be resolved expressly. Exchange arrangements, core credits and disposal instructions can affect the answer. The agreement should identify the relevant parts and permitted treatment.
Sources and further reading
General information, not advice for a particular matter. Facts, policies, contracts, governing law, and deadlines require individual review. A consultation request does not create an attorney-client relationship or stop a deadline.