Reducing handling-related delays

Handling-related delays are rarely dramatic. They come in minutes: a loader missing from the stand, a bag to offload that nobody can find, a load sheet that arrives late, a passenger paged three times at the gate. Taken one by one, they look unavoidable. Added up over a day and carried from flight to flight, they weigh on the punctuality of the whole station and on the relationship with airline customers.

This article explains where those minutes come from, how they are coded, and which organisational levers reduce them. It draws on publications from EUROCONTROL and IATA and on the European ground handling regulation.

What counts as a handling-related delay

A departure delay is the gap between the actual off-block time (AOBT) and the scheduled off-block time (SOBT). Every minute of that gap is given one or more IATA delay codes that identify its cause.

Ground handling is not a single code group. According to the standard IATA list reproduced in the annex of EUROCONTROL’s CODA Digest, several groups relate directly to ground handling:

• 11 to 19 – passengers and baggage: late or incorrect check-in, boarding (discrepancies, paging, missing checked-in passenger), baggage processing, assistance to passengers with reduced mobility;
• 31 to 39 – aircraft and ramp handling: late or inaccurate aircraft documentation (weight and balance), loading and unloading, loading equipment, servicing equipment, cleaning, fuelling, catering, ULDs, technical equipment such as the pushback tug;
• 52: damage to the aircraft during ground operations;
• 77: ground handling impaired by adverse weather.

Some minutes that feel like “handling” actually belong to other codes: 87 covers airport facilities (stands, ramp congestion, boarding bridges), and 91 to 96 cover reactionary delay. The boundary between these groups is a frequent topic of discussion between handler, airline and airport. We cover it in detail in the article on IATA delay codes.

What European data shows

EUROCONTROL’s Central Office for Delay Analysis (CODA) publishes an annual summary of delay causes in Europe. According to the CODA Digest Annual 2024, published in July 2025:

• average departure delay was 17.5 minutes per flight in 2024, compared with 17.6 minutes in 2023;
• reactionary delay remained the largest contributor, at 46% of delay minutes, or 8.0 minutes per flight;
• airline-related causes, among which EUROCONTROL lists ramp handling, passenger boarding and staff shortages, fell but still ranked second, at 4.3 minutes per flight;
• 72.4% of flights arrived within 15 minutes of their scheduled arrival time or earlier.

Two lessons for a station. First, the causes that the ground partly controls, grouped by EUROCONTROL under “airline”, weigh more on average than en-route air traffic flow management delay, even though the same report describes that delay as high in 2024 (2.3 minutes per flight). Second, reactionary delay, close to half of all minutes, feeds on primary delays: a minute not recovered on the ground on the first flight of the day can resurface on later rotations.

Where handling minutes come from

Preparation that starts too late

Many departure delays begin before the aircraft arrives. A stand that has not been inspected, equipment not in position, a team assigned to two overlapping turnarounds: the turnaround then starts with a handicap. Regulation (EU) 2025/20 requires the stand to be inspected before the aircraft arrives and arrival procedures to cover equipment positioning.

Resources that are not there at the right time

EUROCONTROL’s A-CDM manual explicitly lists among ground handler objectives the reduction of “delays due to late equipment (e.g. buses, push back tractors, steps etc) and personnel”, measured using standard IATA delay coding. A piece of equipment that is available somewhere on the apron but cannot be found has the same effect as one that is missing. This is one of the topics of our article on ground support equipment tracking.

Crowded final minutes

The last minutes concentrate the risk: last bags, offloads for no-show passengers, final load documents, hold and door closure. A task running late at that point has no slack left to absorb it in parallel.

Passengers who are not where they should be

Code 15 covers boarding problems: discrepancies, paging, and checked-in passengers who do not turn up at the gate. Code 19 covers boarding and deboarding of passengers with reduced mobility. These minutes are often treated as fate, yet they follow a predictable chain. A checked-in passenger missing at the gate means a decision to make (wait or go), and if the flight leaves without them, their bags must be found and taken off before the holds close. The sooner the missing passenger is identified, the sooner the ramp team can locate the bag and the less the offload weighs on the departure time. The same logic applies to assistance for passengers with reduced mobility: when it is booked and staffed in advance, it fits into the sequence; when it is discovered at the gate, it becomes a delay.

Delays discovered instead of announced

EUROCONTROL’s A-CDM manual is explicit: a non-reported delay can wreak havoc with the departure sequence, affect other flights and cause induced delays. A delay discovered at the last moment costs more than one announced early, for the flight concerned and for the others.

Organisational levers

Prepare the turnaround before the aircraft arrives

Regulation (EU) 2025/20 requires ground handling organisations to establish a turnaround coordination function, which takes into account the airline’s turnaround plan and ends with the release of the flight. The regulation applies from 27 March 2028. In practice, preparation means checking before arrival that every resource in the plan (team, equipment, ULDs, documents) is assigned, available and close to the stand. It is less a tool than a discipline: every turnaround has an owner who knows what is missing before the aircraft is on blocks.

Follow actual progress during the turnaround

A turnaround is managed from what is actually happening on stand, not from the theoretical plan. Knowing which task has started, which is running late and which one drives door closure lets you redeploy a team or a piece of equipment before the minute is lost. A-CDM milestones (AIBT, boarding start, aircraft ready) give a shared framework; our article on narrowbody turnaround steps walks through the sequence.

Announce a realistic TOBT early

At an A-CDM airport, the TOBT is the ground’s commitment. Updating it as soon as you know it will not be met lets air traffic control rework the sequence instead of absorbing the disruption. The A-CDM manual also recommends that handlers build an extra buffer into TOBT predictions in adverse conditions. We expand on this in A-CDM and TOBT for ground handlers.

Code correctly and keep the evidence

A wrongly allocated delay code distorts analysis: you fix the wrong process and pay for minutes that are not yours. Accurate coding depends on time-stamped facts: when the aircraft was on blocks, when the loader arrived, when the last bag was loaded. Those same facts support the discussion with the airline under the SLA.

Share the same picture across teams

On a typical stand, the ramp team, the baggage team, the gate agent, the cleaning crew and the turnaround coordinator each know the status of their own task. Few of them know the status of the others. Many delays come from that gap: the gate does not know that the holds are still open, the ramp does not know that two passengers are missing. A shared view per flight, updated as tasks progress, turns separate pieces of information into a decision.

Standardise procedures

IATA presents the IGOM as a way to standardise ground handling processes and reduce the complexity of working with multiple airlines, airports and service providers. Fewer procedure variants from one airline to the next means less hesitation and fewer errors on the ramp.

Measure with shared definitions

Finally, reducing delays means counting them the same way as the airline and the airport: same reference times, same codes, same punctuality threshold. EUROCONTROL’s A-CDM manual notes that ground handler objectives include maintaining service level agreements, including departure punctuality and turnaround times. A regular review of coded minutes, flight by flight and with supporting evidence, separates structural causes (understaffing on a wave, too little equipment) from one-off incidents.

How Turnpilot helps

Turnpilot sits on top of existing systems without replacing them. The turnaround control module shows every turnaround at the station in real time, sorted by risk, with alerts ranked by impact on departure time: the system suggests an action, a person decides. The SLA and delays module links every coded minute to its chain of evidence. To see what this changes for a service provider, visit the page for ground handlers.