Digital Towers

Norway: a hypothetical future state

70 airports assessed. 10 have no tower and meet a tier 1 to 3 rule (5 / 2 / 3). 17 towered airports fit tiers 1 to 3. A hypothetical set of 3 centres covers them. 1 public traffic source loaded.

Hypothetical. Illustrative. Not a recommendation of any authority. Every number here comes from a stated rule applied to public data. It describes a what-if, not a plan, forecast or advice to any country, airport or authority.
70airports assessed
10no tower, tier 1 to 3
17towered, tier 1 to 3
2isolated, tier 4
3hypothetical centres
1.5 millionpeople near a gap airport

Orange, teal, pink and grey dots are suggested tiers. Hollow rings are towered airports that fit a tier. White-ringed orange dots are hypothetical centres. Green outlined dots are remote or digital towers already listed on this site. Basemap: OpenStreetMap data via Protomaps.

What it could enable

  • Service where there is none. 10 airports have no tower but meet a traffic or infrastructure rule. Remote service could give them separation or advisory service they cannot justify as a conventional tower. About 62 thousand people live within 50 km of one of them and of no towered airport.
  • Fewer, shared positions. 17 towered airports fit tiers 1 to 3. Serving some of them from 3 shared centres could change how towers are staffed, equipped and replaced when they age.
  • Different working pattern. A centre of about 9 airports lets part-time airports share a controller across the day, and lets busy periods at different airports fall on different positions.
  • Awareness for isolated fields. 2 isolated airfields could get surface awareness (cameras and surveillance) without any air traffic service.
  • Already moving. 22 airports here are listed on this site as remote or digital (operational, trial or planned). See them.

The gap in numbers

TierNo tower todayTowered today
Tier 1: Full remote tower service514
Tier 2: Part-time remote tower23
Tier 3: Remote advisory (AFIS-like)30
Tier 4: Surface awareness only2n/a
Large hub, left alonen/a2
Traffic on gap airports
758 thousand passengers (5 airports with a figure)
Population
5.6 million (World Bank 2024)
People in cities of 15,000+
3.3 million
Within 50 km of a gap airport
1.5 million
... and of no towered airport
62 thousand
Near only an isolated airfield
0
Airports with air-ground service already
6 of the gap airports have an AFIS-type frequency listed
Data quality. 5 of the 10 airports without a tower that meet a rule have a traffic figure; the rest are placed by runway, size class and scheduled-service flag only. Covers commercial passenger traffic. Movements and general aviation are not in this table.

Candidate airports

AirportTierClassPassengersMovementsCentre
Hammerfest Airport
ENHF · Hammerfest
Tier 1No tower, scheduled passenger service202,058n/a
Svalbard Airport, Longyear
ENSB · Longyearbyen
Tier 1No tower, scheduled passenger service200,190n/a
Stokmarknes Airport, Skagen
ENSK · Hadsel
Tier 1No tower, scheduled passenger service129,424n/a
Brønnøysund Airport, Brønnøy
ENBN · Brønnøy
Tier 1No tower, scheduled passenger service122,196n/a
Florø Airport
ENFL · Florø
Tier 1No tower, scheduled passenger service104,250n/a
Honningsvåg Airport, Valan
ENHV · Honningsvåg
Tier 2No tower, scheduled passenger servicen/an/a
Stord Airport, Sørstokken
ENSO · Leirvik
Tier 2No tower, scheduled passenger servicen/an/a
Førde Airport, Bringeland
ENBL · Førde
Tier 3No tower, scheduled passenger servicen/an/a
Lillestrøm Airfield, Kjeller
ENKJ · Kjeller
Tier 3No tower, infrastructure proxy (no traffic figure)n/an/a
Skien Airport
ENSN · Geiteryggen
Tier 3No tower, infrastructure proxy (no traffic figure)n/an/a

Hypothetical centres

Centre siteAirportsTier 1 / 2 / 3Farthest
Ørsta-Volda Airport, Hovden
Existing staffed tower facility
1711 / 3 / 3473 km
Tromsø Airport
Existing staffed tower facility
97 / 2 / 0302 km
Svalbard Airport, Longyear
New site (no existing facility in range)
11 / 0 / 00 km

Responsible implementation

A tier on this page is a starting question. These are the topics any real plan would need to answer. Public guidance:

Safety case and regulator approval

Each service needs its own safety case and approval before it carries traffic. A design approval for equipment is a different step from permission to run a service. The regulator named in this site's records for Norway: Norwegian CAA.

Controller workforce and training

Remote work changes the job: new displays, new failure modes, and new competence checks. A plan would cover who moves, who trains, how existing controllers choose, and what happens to current staff and their conditions.

Communications and surveillance

Radio, video and surveillance links must meet the latency and quality the safety case assumes. Tier 1 and 2 airports need reliable cameras, redundant links and a surveillance picture for traffic that radar or ADS-B cannot see from the ground.

Contingency and redundancy

Every centre needs a fallback: a second path for data, a backup position, and a rule for what the airport does when a link fails (hold, divert, revert to advisory). Centres that serve many airports need a plan for losing all of them at once.

Cybersecurity

A centre is a single high-value target. It needs the same protections as other air traffic systems: segmented networks, supply-chain checks, logging, and tested recovery.

Community and labour engagement

Airports, airlines, pilots, unions, local governments and neighbours should be in the process before decisions, not after. Jobs can move away from small airports, and that is a real cost to a community.

Sources