HBS — Hold Baggage Screening

What HBS Is

Hold Baggage Screening (HBS) is the process — not the equipment or conveyor infrastructure — of checking every piece of hold (checked) baggage for explosives and other prohibited items before it is cleared to be loaded onto an aircraft. ICAO Annex 17 (Aviation Security), Standard 4.5, requires contracting states to ensure all hold baggage is screened before loading and then protected from unauthorized interference from the point of screening until departure.

HBS vs BHS: Process vs Infrastructure

HBS is frequently confused with BHS, and the two are closely linked but conceptually different. The BHS is the physical conveyor, sortation and automation infrastructure that physically moves a bag from check-in to the aircraft. HBS is the regulatory security process that runs on top of that infrastructure — the screening equipment is typically installed in-line within the BHS, but HBS as a discipline covers the screening standard, escalation procedures and compliance obligations, not the belts and sorters themselves.

How the Screening Tiers Work

Regional regulators implement the ICAO Annex 17 baseline with their own certified equipment standards. In the European Union, Regulation (EU) 2015/1998 sets tiered performance standards for Explosive Detection System (EDS) equipment used in hold baggage screening — for example, requiring newer EDS installations to meet a higher detection standard than older ones — and also permits Explosive Detection Dog (EDD) teams and Explosive Trace Detection (ETD) equipment as part of the screening regime. When automated screening equipment flags a bag, it is held back from loading and subject to further inspection — additional automated analysis or a manual search — before it can be cleared; the detailed escalation procedures are treated as security-sensitive and are not fully public.

Reconciliation with BRS

HBS connects directly to BRS (Baggage Reconciliation System). A bag that fails screening and cannot be cleared must be identified and removed before departure; the BRS is the system that confirms which bags have actually been loaded and cross-references them against boarded passengers, closing the loop that HBS's screening decisions feed into.

Who Publishes Guidance

IATA publishes Hold Baggage (HB) Security Procedures guidance for airlines, airports and ground handlers, consolidating how screening, protection-from-interference and reconciliation obligations under ICAO Annex 17 should be implemented operationally. This guidance sits alongside — and is built on top of — the binding ICAO standard and any stricter regional rules such as the EU framework.