Key takeaways
- ASL Airlines Ireland is an Irish cargo airline headquartered in Swords with its home base at Dublin, formerly known as Air Contractors.
- Codes: IATA 5H, ICAO ABR, callsign “CONTRACT”.
- The fleet is a mix of types: converted Boeing 737s, ATR 72 freighters and Airbus A300 and A330 freighters.
- Many flights are operated on behalf of FedEx, DHL, UPS and Amazon – often in their livery instead of ASL colors.
- The Boeing 757 is history: the last example left the fleet in 2020.
Contents
Profile
| IATA code | 5H |
|---|---|
| ICAO code | ABR |
| Callsign | CONTRACT |
| Hubs | DUB |
| Business model | Cargo and express airline, mainly on behalf of parcel services and online retailers; also charter and ACMI |
| Headquarters | Swords near Dublin, Ireland |
| Home base | Dublin Airport (DUB); own maintenance hangar in Shannon |
| Origin | Founded in 1972 as Air Bridge Carriers at East Midlands, Hunting Cargo Airlines from 1992, Air Contractors from 1998 |
| Current name | ASL Airlines Ireland since 2015 |
| Group | ASL Aviation Holdings with sisters in Belgium and France |
| Customers per ASL | FedEx, DHL, UPS and Amazon |
| Fleet types (as of 2026) | Boeing 737-400 and 737-800 freighters, ATR 72-500F and 72-600F, Airbus A300-600 freighters, Airbus A330 freighters |
| Fleet size | about 35 to 40 aircraft, depending on source and date |
| Alliance | none (cargo airline) |
How to recognize the airline
Is that really ASL Airlines Ireland?
- Many aircraft fly in the customer’s colors, such as FedEx Feeder or DHL – you then recognize the airline itself only by the registration and code
- Irish registration with EI- on the fuselage, also on aircraft in customer livery
- On the tracker with ICAO code ABR, on the radio with the callsign “CONTRACT”
- Boeing 737 without a row of windows and with a large cargo door at the front left – converted 737-400 or 737-800
- ATR 72-600F: turboprop without cabin windows with a large cargo door at the front, frequently used for FedEx
- Lots of activity in the evening and night hours – typical for express cargo
If a freighter with FedEx titles and an Irish registration rolls past your spot at night, you have very likely met ASL Airlines Ireland. The airline from Dublin is one of the most inconspicuous in Europe – and that is exactly what makes it exciting: its aircraft often wear other companies’ colors, its types range from turboprops to widebody freighters, and its name has changed several times in five decades. Here you will learn how to attribute it reliably.
Every freighter with its registration in your hangar
With Planetrack, you post your sighting with photo, type, registration, airline and spot – so even the FedEx ATR with an EI- registration stays cleanly attributed as an ASL flight. Planetrack is launching soon – join the waitlist and get early access.
ASL Airlines Ireland at a glance
ASL Airlines Ireland is an Irish cargo airline with its company headquarters in Swords near Dublin. Its home base is Dublin Airport, and in Shannon it runs its own hangar for light maintenance. According to the company, aircraft and crews are stationed at bases in ten European countries, and the regular network covers more than 50 destinations in Europe, North America and Asia.
The business model is clearly defined: ASL flies mainly for the big express and parcel services as well as for online retailers. The parent company names FedEx, DHL, UPS and Amazon as customers. In addition, the airline offers full charter, short- and long-term contracts, ad hoc flights and ACMI – meaning aircraft with crew, maintenance and insurance for another operator.
The airline belongs to ASL Aviation Holdings, a group with further flight operations. The best-known sisters are ASL Airlines Belgium, the former TNT Airways, and ASL Airlines France, which emerged from Europe Airpost.
Codes and callsign
- IATA code 5H: appears in flight numbers and cargo bookings but is rarely visible to spotters.
- ICAO code ABR: appears in the air traffic control flight plan and on flight trackers – this is the code you search for.
- Callsign CONTRACT: this is how the crew identifies itself on the radio.
The codes are small time capsules. ABR goes back to the very first name, Air Bridge Carriers, and the callsign CONTRACT to the time as Air Contractors. Both were kept when the airline was renamed. That is handy for you: even when an aircraft is flying in FedEx or DHL colors, the ICAO code on the tracker reveals who is actually flying it.
Reading the tracker correctly
When ASL flies on behalf of a parcel service, the flight can appear on some trackers under the customer’s flight number. So pay attention to the callsign and registration. How to evaluate ADS-B data for spotters is explained in the guide to flight tracking for spotters.
From Air Bridge Carriers to ASL: the history
The story does not begin in Ireland but in England. In 1972, Air Bridge Carriers came into being at East Midlands Airport. In 1992, it became Hunting Cargo Airlines, named after the owner at the time, the Hunting Group. From 1997, the entire flight operation moved to Ireland, and in 1998 Hunting sold its aviation division to a consortium. From then on, the airline was called Air Contractors – a name under which many spotters still know it today.
In the following years, the group grew through acquisitions. In 2008, it took over France’s Europe Airpost, which mainly flew for the post office; the holding company operated as ASL Aviation Group at the time. In 2015, Air Contractors announced its renaming to ASL Airlines Ireland. In 2016, TNT Airways and Spain’s PAN Air were added when FedEx took over TNT – they became ASL Airlines Belgium and ASL Airlines Spain. Since 2017, the parent has been called ASL Aviation Holdings.
1972
Founded as Air Bridge Carriers at East Midlands Airport.
1992
Renamed Hunting Cargo Airlines.
1998
Sale of the Hunting aviation division, new name Air Contractors, flight operations in Ireland.
2015
Air Contractors becomes ASL Airlines Ireland.
For you as a spotter, that means: old photos with “Air Contractors” titles, Hunting aircraft or Air Bridge aircraft belong to the same company history. If you maintain a historical archive, it is worth linking these names as predecessors instead of listing them as separate airlines.
The fleet: freighters from turboprops to widebody jets
The fleet is a colorful mix and is converted, relocated or supplemented depending on customer contracts. The exact number fluctuates: ASL Aviation Holdings cites about 40 aircraft, while public fleet lists in 2025 and 2026 came to about 35 to 36 active aircraft. So expect an order of magnitude, not a fixed number.
| Type | Role | Spotter tip |
|---|---|---|
| Boeing 737-800BCF | Backbone on short and medium routes | Largest 737 version in the fleet, no windows, large cargo door at the front left |
| Boeing 737-400SF | Older narrowbody freighter | Shorter than the 737-800, Classic engines with a flattened underside |
| ATR 72-600F | Turboprop freighter, mainly for FedEx | Factory-new freighter without windows, large door at the front |
| ATR 72-500F | Older converted ATR freighter | Only a small number left |
| Airbus A300-600 freighter | Widebody freighter, including for DHL | Two engines, much thicker fuselage than the 737 |
| Airbus A330 freighter (P2F) | Widebody freighter from converted passenger jets | Newest addition among the widebodies |
Converted Boeing 737s
Most of the narrowbody freighters are former passenger aircraft converted into freighters. The 737-800s are Boeing Converted Freighters (BCF), meaning conversions under Boeing’s own program. According to fleet overviews, a large share of these aircraft fly for Amazon, some also for DHL and other customers; more conversions were most recently still on order.
Interesting for you: from the outside, the 737-800BCF and 737-800 conversions by other providers look very similar. The exact variant is usually only in the fleet list. The older 737-400SF, by contrast, is easy to tell apart – it belongs to the Classic generation with the typical engine inlets flattened at the bottom. How to tell the generations apart is explained in the guide Telling the Boeing 737 Original, Classic, NG and MAX apart. The manufacturer is Boeing.
ATR 72-600F for FedEx
A special chapter is the ATR 72-600F. FedEx Express ordered the factory-new turboprop freighter in 2017 as launch customer. The first flight followed in September 2020, the first delivery in December 2020 – and this first freighter was operated by ASL Airlines Ireland, initially between Paris-Charles de Gaulle and the Czech Republic. The freighter has a large cargo door at the front and holds seven LD3 containers.
These ATRs fly in FedEx’s feeder network in Europe. Visually, they wear the customer’s colors, not ASL’s. The manufacturer is ATR; how to tell ATR and Dash 8 apart is explained in the article Telling turboprops apart.
Still missing that one freighter in your hangar?
Put registrations or types like the ATR 72-600F on your wish list and get notified when they approach or land near you. Planetrack is launching soon – join the waitlist.
Widebody freighters: A300 and A330
On longer and heavier routes, ASL deploys widebody freighters. The Airbus A300-600 freighters fly for DHL, among others – accordingly often in yellow instead of ASL colors. In addition there were Airbus A330s converted from passenger aircraft to freighters. An A330-300 freighter left according to fleet lists in 2024; currently ASL flies converted A330s in small numbers.
Historical types: 757 and more
The fleet has changed greatly over the decades. Former types include the Boeing 757-200, whose last example left in June 2020, the Boeing 737-300, the ATR 42-300 and the ATR 72-200 as freighters. In the time before Air Contractors, predecessors also flew classic propeller freighters. Anyone looking for a 757 in ASL Ireland’s name today will only find one in the photo archive.
Watch out for archive photos
Many older spotter pictures show Air Contractors aircraft with 757s or 737-300s. When classifying, always check the date of the shot: the 757 is a thing of the past at ASL Ireland, and the 737-300 also left the fleet in 2019.
How to recognize ASL Airlines Ireland
The most important rule: don’t rely on the livery. A large part of the fleet flies on behalf of customers and then wears the customer’s colors – FedEx Feeder, DHL or others. Aircraft in ASL’s own colors exist too, but they are only part of the picture.
These features help you instead:
- Registration: ASL Airlines Ireland registers its aircraft in Ireland, the prefix is EI-. A FedEx ATR or a DHL A300 with an EI- registration is a strong hint at ASL. More on the logic behind it is in the article Understanding aircraft registrations.
- ICAO code ABR on the tracker and the callsign “CONTRACT” on the radio.
- No cabin windows and a large cargo door at the front left – typical for converted 737s and the ATR freighters.
- Time of day: Express cargo flies mainly in the evening and at night, when parcels have to get to the hub and back.
Points to ASL Ireland
- Irish EI- registration on a freighter in customer colors
- ICAO code ABR or callsign CONTRACT on the tracker
- 737-800 freighter or ATR 72F with FedEx titles in Europe
Points more to a sister airline
- Belgian OO- registration – more likely ASL Airlines Belgium
- French F- registration – more likely ASL Airlines France
- Different ICAO code on the tracker despite ASL look
Why so many freighters fly under another name at all is explained in the background piece on the express integrators DHL, FedEx and UPS: the parcel services have part of their flights operated by contract airlines that provide aircraft and crew. You can find general tips for recognizing freighters in the article Recognizing cargo aircraft.
Spotting ASL Airlines Ireland
Dublin and Shannon
The most obvious address is Dublin. This is the home base, and ASL freighters are part of the normal traffic picture alongside Aer Lingus and Ryanair. A popular location is described on the page for The Mound at Dublin Airport, and more tips are in the guide Plane spotting in Dublin. In Shannon, ASL maintains a hangar, so aircraft can be parked there for maintenance or arrive and depart.
Express hubs in Europe
Because ASL flies for several parcel services, its aircraft show up at cargo and express airports. The first ATR 72-600F for FedEx, for example, started from Paris-Charles de Gaulle. Overviews of the airline name East Midlands and Paris-CDG as important locations alongside Dublin and Shannon. Which destinations are currently served depends heavily on ongoing contracts and changes again and again. As of October 2026, the rule is therefore: don’t plan based on old spotter reports; check on a tracker beforehand where flights with the code ABR are going.
In Germany, cargo spotters should mainly consider the big express airports, such as Leipzig/Halle or Cologne/Bonn. Whether an ASL Ireland flight is among them there depends on the respective contract – it is not guaranteed. For context, it is worth looking at other cargo airlines such as FedEx Express or DHL Air UK, alongside which ASL aircraft can often be parked on the apron there.
Good chances if …
- you are spotting in Dublin, the airline’s home base
- the tracker shows flights with the code ABR near you
- you are at an express airport in the evening or at night
Check beforehand if …
- you are planning based on older reports – contracts change
- you are looking specifically for a certain type like the A330
Probably not an ASL day if …
- your airport has hardly any cargo traffic and handles only passenger flights during the day
Photo tips for night freighters
Many ASL movements fall in twilight or at night. Then high ISO values, fast lenses and a steady stance are what count. Practical tips on this are given in the article Photographing aircraft at night. Where flying is allowed at night at all depends on the airport; for Germany, the post on the night flight ban at German airports summarizes the rules.
Safety and rules
Only take photos from publicly accessible areas and respect fences and barriers – especially at night at cargo airports. Drones have no business near airports. What the law says is explained in the article Is plane spotting allowed?.
Common mix-ups
- Taking the customer for the airline – an ATR in FedEx colors or an A300 in DHL yellow can be flown by ASL Airlines Ireland. Registration and ICAO code decide.
- Mixing up ASL Ireland with ASL Belgium or ASL France – the sisters share the name but not registrations and codes.
- Treating Air Contractors as a separate airline – it is the same operation under its old name.
- Expecting a current 757 – the Boeing 757 has not been in the fleet since 2020.
- Equating the 737-400SF and the 737-800 freighter – the Classic is shorter and has the typically flattened engine inlets.
- Taking the ATR 72-600F for a converted passenger ATR – the 600F was built as a freighter from the factory.
Keep an eye on freighters
Follow individual EI- registrations or types like the 737-800 freighters, get notified on approach or landing and share your night shot with the community. Planetrack is launching soon – join the waitlist and get early access.
Conclusion
ASL Airlines Ireland is an airline for spotters who look closely. Behind the name lies a company history from Air Bridge Carriers via Hunting and Air Contractors to today, a fleet from the ATR turboprop to the A300 widebody freighter and a business model in which its own livery is often not visible at all. If you note the registration and ICAO code, you will recognize the airline anyway – even at night under FedEx or DHL colors.
In brief
ASL Airlines Ireland (IATA 5H, ICAO ABR, callsign “CONTRACT”) is the former Air Contractors from Dublin. It flies 737 freighters, ATR 72Fs and A300Fs for parcel services – recognizable by the EI- registration, not by the livery. The 757 has been history since 2020.
Summary
- ASL Airlines Ireland is a prime example of an airline you recognize not by the livery but by the registration and the ICAO code ABR.
- The roots go back to 1972: Air Bridge Carriers, Hunting Cargo Airlines and Air Contractors are predecessors of the same company.
- Typical are converted Boeing 737 freighters and ATR 72-600Fs, which FedEx ordered as launch customer and which ASL operates for FedEx.
- Your best chances are at cargo and express airports in the evening and at night – and of course in Dublin and Shannon.
Frequently asked questions
What are ASL Airlines Ireland’s IATA and ICAO codes?
The IATA code is 5H, the ICAO code ABR. On the radio, the airline uses the callsign “CONTRACT” – a remnant from the time as Air Contractors. The ICAO code ABR in turn recalls the first name, Air Bridge Carriers.
Is ASL Airlines Ireland the same as Air Contractors?
Yes. Air Contractors renamed itself ASL Airlines Ireland in 2015. The company goes back to Air Bridge Carriers, which was founded in 1972 at East Midlands Airport in England and was later called Hunting Cargo Airlines. Since 1998, the flight operation has been based in Ireland.
Which aircraft does ASL Airlines Ireland fly?
The fleet consists of freighters: converted Boeing 737-400s and 737-800s, turboprops of the types ATR 72-500F and ATR 72-600F as well as widebody freighters of the types Airbus A300-600 and A330. The total is about 35 to 40 aircraft, depending on source and date.
Does ASL Airlines Ireland still fly the Boeing 757?
No. The Boeing 757-200 used to be part of the fleet, and the last example was retired in June 2020. If you see an ASL 757 today, it is an archive photo – or an aircraft of another airline.
Who does ASL Airlines Ireland fly for?
According to ASL Aviation Holdings, the parcel services FedEx, DHL and UPS as well as the online retailer Amazon are among its customers. In addition there are charter and ACMI contracts, in which ASL provides aircraft, crew, maintenance and insurance.
Why is there an Irish registration on a FedEx ATR?
Because the aircraft is very likely operated by ASL Airlines Ireland. FedEx Express ordered the ATR 72-600F in 2017 as launch customer, and according to ATR the first freighter of this type was flown by ASL Airlines Ireland for FedEx. Livery and registration therefore point to two different companies.
Where can I spot ASL Airlines Ireland?
Most easily in Dublin, the home base, and in Shannon, where ASL has a maintenance hangar. The airline also serves express hubs and cargo airports in Europe. Assignments change with customer contracts – before the trip, check a flight tracker for the code ABR.
Keep an eye on ASL Airlines Ireland
Watch the airline or individual registrations and get notified on approach or landing – and post your sighting with type, registration and spot. Planetrack is launching soon – join the waitlist and get early access.
Aircraft types in the fleet
Boeing 737-800BCF and 737-800SF
Windowless fuselage, a big door at the front left, but winglets and modern engines: the converted 737-800 is the new standard freighter in the express night network. Here you learn who converts it, who flies it and how to recognize it.
Aircraft typeBoeing 737-300SF/-400SF
No windows, a big door at the front left and the flattened engine inlets of the Classic generation: converted 737-300s and -400s carry parcels and mail across Europe at night. Here you learn how the conversion works, who flies the freighters and where you can still catch them.
Aircraft typeATR 72-600F
Not a single cabin window, a huge door at the front of the fuselage and FedEx colors on the tail: the ATR 72-600F is the only factory-built propeller regional freighter. Here is how to recognize it and tell it from converted ATR freighters.
Aircraft typeAirbus A300-600F/-600RF
Windowless fuselage, big door at the front left, small fences at the wingtips: the A300-600F is the workhorse of the parcel night. Here is how to tell new-build from conversion and find it in Europe.
Aircraft typeBoeing 757-200
Long, slender, tall-legged and with engines that look almost too big: the 757-200 is a narrowbody with long-haul genes. It has been out of production since 2004, so spotters welcome every encounter.
More airlines
ASL Airlines Belgium
The former TNT Airways from Liège now flies for Ireland’s ASL group: 737 freighters in FedEx’s European night network and jumbo freighters on long-haul to China and North America.
CargoASL Airlines France
The former Europe Airpost from Paris now flies for Ireland’s ASL group: Boeing 737 freighters at night, Boeing 737 passenger jets by day – with charter flights, scheduled routes to Algeria and mail in the hold.
CharterEurope Airpost
The French mail airline from Paris Charles de Gaulle: as Aéropostale flying letters by night and vacationers by day – from 2000/2001 as Europe Airpost, from 2007/2008 part of the Irish ASL group and since 2015 ASL Airlines France.
CargoFedEx Express
The world’s largest cargo airline from Memphis: a colorful fleet of MD-11, Boeing 777F, 767, 757 and A300, plus feeder turboprops – and European hubs in Paris and Cologne/Bonn.
CargoDHL Air UK
The British cargo airline of the DHL Group is based at East Midlands Airport and flies Boeing 757F, 767F and 777F in DHL yellow – at night across Europe and on long-haul routes.
NetworkAer Lingus
Ireland’s network airline with a hub in Dublin: founded in 1936, part of IAG since 2015, in no alliance – and with the A321LR and A321XLR one of the most exciting single-aisle operators across the North Atlantic.
Related airports & manufacturers
Airports, manufacturers, airline groups and alliances – who is behind them and what you should know as a spotter.
ASL Aviation Holdings
Hardly any group flies as many parcels through Europe’s night as ASL Aviation Holdings from Swords near Dublin. Here you learn how Air Contractors and TNT Airways became ASL Airlines Ireland and Belgium, which jets they fly and how to identify them reliably on the apron.
AirportDublin Airport
Ireland’s largest airport: home base of Aer Lingus and Ryanair, with a second parallel runway since 2022, US preclearance in Terminal 2 and plenty of transatlantic traffic – no official observation deck, but spotting positions all around the fence.
AirportShannon Airport
Ireland’s gateway to the Atlantic: once a mandatory refueling stop between Europe and America, the world’s first duty-free airport in 1947, today with US preclearance, Ireland’s longest runway, 24-hour operation and regular military transit.
ManufacturerBoeing
Boeing is the American counterpart to Airbus and has built airliners in series since the 707. If you can tell the 737, 777 and 787 apart by landing gear, wingtips and tail, you can identify a large share of the traffic at any European airport – even without a livery clue.
Where to get ASL Airlines Ireland in front of your lens
Spotting locations where this airline can be seen regularly – with vantage points, light times and coordinates.
Related guides from the blog
- Identifying cargo aircraft: how to tell every freighter at the fence
- Express integrators DHL, FedEx and UPS: networks, hubs and fleets
- ATR or Dash 8? How to tell turboprops apart with confidence
- How to tell the Boeing 737 Original, Classic, NG and MAX apart
- Plane spotting in Dublin: spots, runways and traffic at DUB airport
- Photographing aircraft at night: blue hour, light trails and sharp jets in the dark



