Convention Control Over International Air Cargo
The Montreal Convention governs the carrier's vigilance over cargo in covered international carriage by air, and its treaty rules prevail over inconsistent domestic rules on the same subject. In Philippine use, the Convention supplies the controlling liability system for international air shipments, while the Civil Code rules on common carriers remain important for purely domestic carriage and for matters not occupied by the treaty.
Carriage is international when the place of departure and the place of destination, according to the agreement of the parties, are in two States Parties, or are in one State Party with an agreed stopping place in another State. The character of the contract, not the mere physical route taken on a particular leg, determines whether the Convention governs the shipment.
The Convention applies to carriage of cargo performed by aircraft for reward, and also to gratuitous carriage by air when performed by an air transport undertaking. It covers cargo as commercial goods entrusted to an air carrier for carriage, not passenger checked baggage, hand-carried personal effects, or purely postal liability governed by postal arrangements.
Nature of the Carrier's Vigilance
The carrier's vigilance under the Convention is a treaty-based duty to keep, carry, account for, and deliver cargo during the Convention period of responsibility. The inquiry is not limited to the Civil Code formula of extraordinary diligence, because the Convention fixes when liability arises, what defenses are available, how compensation is limited, and when claims are barred.
For destruction, loss, or damage to cargo, liability attaches when the event causing the injury occurred during carriage by air. Once the cargo is shown to have been delivered to the carrier and later destroyed, lost, damaged, or short-delivered within that period, the carrier must meet the Convention defenses or remain liable subject to the treaty limits.
For delay, the carrier is liable for damage occasioned by delay in the carriage of cargo by air, but the carrier avoids liability by proving that it and its servants and agents took all measures reasonably required to avoid the damage, or that taking such measures was impossible. Delay therefore requires legally compensable damage, not merely dissatisfaction with a late shipment.
Period of Responsibility
The period of responsibility for cargo is the period during which the cargo is in the charge of the carrier. This includes custody at the airport, on board the aircraft, and at any place where the carrier keeps the cargo under the air contract.
The Convention does not ordinarily treat carriage by land, sea, or inland waterway outside an airport as carriage by air. However, when such surface carriage is performed in carrying out the air carriage contract for loading, delivery, or transshipment, destruction, loss, or damage is presumed to have resulted from an event during carriage by air, unless the contrary is proved.
If the carrier, without the consent of the consignor, substitutes another mode of transport for all or part of a carriage that the parties agreed would be by air, that substitute carriage is treated as carriage by air for Convention purposes. This prevents the carrier from escaping treaty responsibility by unilaterally moving the goods outside the agreed air mode.
Air Waybill, Cargo Receipt, and Electronic Record
The contract of carriage for cargo may be evidenced by an air waybill, a cargo receipt, or another record of the carriage, including an electronic record. The absence, irregularity, or loss of the document does not destroy the contract or remove the carriage from the Convention.
The air waybill or cargo receipt is important because it is prima facie evidence of the contract, acceptance of the cargo, and the conditions of carriage. Statements on weight, dimensions, packing, number of packages, and apparent condition affect the practical proof of shortage, mishandling, or damage.
The consignor is responsible for the correctness of particulars and statements relating to the cargo that the consignor furnishes for insertion in the carriage document or record. The consignor must indemnify the carrier for damage caused by irregular, incorrect, or incomplete particulars, but this responsibility does not excuse the carrier from its own custody obligations over goods actually accepted for carriage.
The carrier may require the consignor to furnish documents and information needed for customs, police, security, quarantine, and other public authority requirements. The carrier is not bound to inquire into the correctness or sufficiency of those documents, but it remains responsible for losses within the Convention period unless a treaty defense applies.
Liability for Destruction, Loss, or Damage
Destruction means the cargo is physically ruined or commercially unusable. Loss includes total non-delivery, unexplained disappearance, or failure to account for the goods. Damage includes physical injury, contamination, breakage, deterioration, pilferage, shortage, or other impairment reducing the value or utility of the shipment.
The claimant must connect the injury to the carriage by air period. The carrier need not be shown to have committed a specific negligent act if the treaty conditions for cargo liability are present, because the Convention makes the occurrence of the damaging event during covered custody the central fact.
The carrier is not liable to the extent it proves that the destruction, loss, or damage resulted from an inherent defect, quality, or vice of the cargo. This defense covers losses caused by the goods' own nature, such as natural deterioration, spontaneous leakage, susceptibility to temperature, or instability, where the damage would have occurred despite proper air carriage.
The carrier is not liable to the extent it proves defective packing of the cargo by a person other than the carrier or its servants or agents. Packaging is defective when it is insufficient for ordinary and reasonably expected incidents of air transport, considering the nature, weight, fragility, perishability, and handling needs of the goods.
The carrier is not liable to the extent it proves that the damage resulted from an act of war or armed conflict. This defense addresses public hostilities and conflict conditions that cause the cargo injury, not ordinary commercial disruption or avoidable operational inconvenience.
The carrier is not liable to the extent it proves that the damage resulted from an act of public authority connected with the entry, exit, or transit of the cargo. This includes lawful seizure, detention, quarantine, confiscation, refusal of entry, or official handling directly producing the loss, provided the carrier did not independently cause the injury.
Contributory Fault and Apportionment
The Convention permits total or partial exoneration when the carrier proves that the damage was caused or contributed to by the negligence or other wrongful act or omission of the person claiming compensation, or of the person from whom the claimant derives rights. The rule applies according to causation, so liability may be reduced rather than entirely defeated.
In cargo cases, contributory fault may consist of misdeclared contents, inaccurate weight, failure to disclose dangerous or perishable character, improper temperature instructions, defective loading instructions supplied by the shipper, or failure to provide necessary import, export, or transit documents. The carrier still remains liable for the portion of damage attributable to its own covered responsibility.
Delay in Cargo Carriage
Delay occurs when the cargo is not transported, made available, or delivered within the time agreed, or, absent a fixed time, within the time reasonably required by the circumstances of the carriage. The relevant circumstances include routing, flight availability, customs requirements, security measures, weather, cargo handling conditions, and the nature of the goods.
Liability for delay is fault-sensitive in a treaty sense because the carrier may escape liability by proving that all reasonable measures to avoid the damage were taken, or that such measures were impossible. Reasonable measures may include timely routing, proper reservation of cargo space, prudent transshipment, prompt notice, preservation steps for perishable cargo, and compliance with official requirements.
Recoverable delay damage must be compensatory and proved. Loss of market, spoilage, storage charges, contractual penalties, and extra forwarding expenses may be relevant only if legally attributable to the delay and within the Convention's conditions and limits.
Limitation of Liability
Cargo liability is limited by reference to Special Drawing Rights per kilogram, as adjusted under the Convention mechanism. As of the adjustment effective before the 2026 Bar coverage cut-off, the cargo limit is 26 Special Drawing Rights per kilogram, unless the consignor made a special declaration of interest in delivery at destination and paid any required supplementary sum.
The kilogram basis generally refers to the weight of the package or packages concerned by the destruction, loss, damage, or delay. If the injury to one package affects the value of other packages covered by the same air waybill or cargo receipt, the total weight of the affected packages may be considered for the limit.
The consignor may increase recoverable liability by making a special declaration of interest in delivery at destination when handing over the cargo and by paying any required supplementary charge. In that situation, the carrier is liable up to the declared amount unless it proves that the declared amount is greater than the consignor's actual interest in delivery.
The cargo limit under the Montreal Convention is not broken merely by proof of willful misconduct or reckless conduct. Unlike certain non-cargo contexts, the cargo regime makes the declared-interest mechanism the treaty method for recovery beyond the default cargo limit.
Special Drawing Rights are converted into the currency of judgment according to the Convention's monetary rule. In a Philippine action, the peso amount is determined by converting the applicable SDR amount at the legally relevant valuation date, subject to the court's application of the Convention rule.
Contractual Clauses Affecting Liability
A contractual clause that tends to relieve the carrier of liability or fix a lower limit than the Convention allows is null and void, although the invalidity of the clause does not invalidate the whole contract. The carrier cannot contract out of the treaty's minimum cargo responsibility.
The carrier may agree to higher limits, waive available defenses, or assume additional obligations consistent with the Convention. Conditions of carriage, tariffs, or waybill terms remain relevant only to the extent they do not reduce the protection given by the treaty.
Any action for damages, however founded, whether in contract, tort, quasi-delict, statute, or otherwise, is subject to the Convention's conditions and limits when the claim falls within its field. Punitive, exemplary, or other non-compensatory damages are not recoverable under the Convention liability action.
Rights of Consignor and Consignee
The consignor controls the cargo during transit subject to the carrier's conditions and the rights of the consignee. The consignor may withdraw the cargo, stop it in transit, request delivery to another consignee, or require return to the place of departure, if the request can be carried out without prejudicing the carrier or other consignors and if the consignor performs the required obligations.
The consignor's right of disposition ceases when the consignee's right begins. Upon arrival of the cargo at destination, the consignee is entitled to require delivery upon payment of charges and compliance with the contract and applicable laws.
If the carrier admits loss of the cargo, or if the cargo has not arrived within seven days after the date on which it ought to have arrived, the consignee may enforce against the carrier the rights arising from the contract of carriage. This rule allows the consignee to act without waiting indefinitely for formal abandonment by the carrier.
Successive and Contracting Carriers
When carriage is performed by several successive carriers and the parties regard it as one undivided operation, the carriage remains international if the entire contractual operation satisfies the Convention test. The shipment is not split into isolated domestic and international contracts merely because different carriers perform different segments.
For cargo in successive carriage, the consignor may sue the first carrier, the consignee entitled to delivery may sue the last carrier, and either may sue the carrier that performed the segment during which the destruction, loss, damage, or delay occurred. The relevant carriers are jointly and severally liable to the consignor or consignee within the Convention framework.
When a contracting carrier makes the contract and an actual carrier performs all or part of the carriage, both may be governed by the Convention. The contracting carrier is responsible for the whole carriage contemplated by the contract, while the actual carrier is responsible for the part it performs, subject to the treaty rules on acts of servants and agents.
Notice of Complaint
Receipt of cargo without complaint is prima facie evidence that the cargo was delivered in good condition and according to the carriage document. A timely written complaint is therefore essential when the consignee receives damaged cargo or when damage from delay is claimed.
For damage to cargo, the complaint must be made immediately after discovery and at the latest within fourteen days from receipt. For delay, the complaint must be made within twenty-one days from the date on which the cargo was placed at the consignee's disposal.
The complaint may be written on the carriage document or made by separate written notice dispatched within the required period. Without timely complaint, no action lies against the carrier, except in case of fraud on its part.
No damage complaint is required for total non-delivery in the same sense as damaged delivery, because there is no receipt of cargo that can operate as prima facie evidence of proper delivery. The claimant must still prove loss, coverage, and timely suit under the Convention.
Two-Year Extinguishment of the Right of Action
The right to damages is extinguished if an action is not brought within two years. The period is counted from the date of arrival at destination, from the date on which the aircraft ought to have arrived, or from the date on which carriage stopped, depending on the facts.
This two-year rule is a treaty condition on the right itself, not an ordinary procedural deadline that may be casually extended by domestic limitation concepts. The method of calculating the period is governed by the law of the court seized of the case, but the existence of the two-year extinguishment rule comes from the Convention.
Forum for Cargo Claims
An action for cargo damages under the Convention may be brought, at the claimant's option, before a competent court in the territory of a State Party where the carrier is domiciled, where it has its principal place of business, where it has the place of business through which the contract was made, or at the place of destination. The separate fifth jurisdiction associated with passenger death or injury does not apply to cargo claims.
A Philippine court may entertain a Convention cargo action only when ordinary jurisdictional requirements and one of the treaty forums are satisfied. The treaty identifies permissible fora but does not eliminate the need for proper parties, service, pleading of material facts, and proof of compensable loss.
Operational Effect in Philippine Transportation Law
In covered international air cargo, the Convention narrows the practical issues to coverage, custody, kind of damage, recognized defenses, weight-based limit, declared value, written complaint, proper forum, and two-year suit. Domestic concepts of common carrier diligence may aid understanding, but they cannot enlarge or reduce the treaty system when the claim is within the Convention.
The carrier's vigilance over goods is therefore strict in custody, specific in defenses, limited in amount, and disciplined by short notice and suit periods. The treaty balances cargo protection with predictable international air carriage exposure by making the carrier answer for covered cargo events while preserving defined defenses and monetary limits.