{{Short description|Airport in Orkney, Scotland}} {{Use dmy dates|date=November 2022}} {{Use British English|date=May 2013}} {{Infobox airport | name = Kirkwall Airport | nativename = | nativename-a = | nativename-r = | image = KOI logo-01.svg | image-width = 225 | image2 = Kirkwall Airport from the air (geograph 5033935).jpg | image2-width = 250 | IATA = KOI | ICAO = EGPA | type = Public | owner-oper = HIAL | city-served = Mainland, Orkney | opened = | location = Kirkwall, Scotland | elevation-f = 58 | elevation-m = 18 | coordinates = {{coord|58|57|29|N|002|54|02|W|type:airport_region:GB-ORK|display=inline,title}} | pushpin_map = Scotland Orkney | pushpin_label = EGPA | pushpin_map_caption = Location in Orkney | website = [http://www.hial.co.uk/kirkwall-airport/ Kirkwall Airport] | metric-rwy = Y | r1-number = 09/27 | r1-length-m = 1,430 | r1-surface = Grooved asphalt | r2-number = 14/32 | r2-length-m = 677 | r2-surface = Asphalt | stat-year = 2025 | stat1-header = Passengers | stat1-data = 157,051 | stat2-header = Passenger change 2024–25 | stat2-data = {{increase}} 5% | stat3-header = Air Transport Movements | stat3-data = 10,274 | stat4-header = Movements change 2024–25 | stat4-data = {{increase}} 3% | footnotes = Sources: UK AIP at NATS<ref name="aip">{{cite web | url=https://nats-uk.ead-it.com/cms-nats/opencms/en/Publications/AIP/ | title=Nats UK | AIP | access-date=15 July 2024 | archive-date=20 July 2024 | archive-url=https://web.archive.org/web/20240720071839/https://www.nats-uk.ead-it.com/cms-nats/opencms/en/Publications/AIP/ | url-status=live }}</ref><br />Statistics: UK Civil Aviation Authority<ref name="caa2024-25p"/><ref name="caa2025at"/> }}
'''Kirkwall Airport''' {{Airport codes|KOI|EGPA}} is the main airport serving Orkney in Scotland. It is located {{convert|2.5|NM|mi km|0|order=out}} southeast of Kirkwall<ref name="aip"/> and is owned by Highlands and Islands Airports Limited. The airport is used by Loganair.
== History == === Foundation === The airport was built and commissioned in 1940 as Royal Air Force Grimsetter, or simply RAF Grimsetter, for the defence of the Scapa Flow naval base. It took its name from the farm of Grimsetter, which the airfield was built over. In 1943, the Royal Navy took over the airbase and it was known as Royal Naval Air Station Grimsetter, commonly referred to as RNAS Grimsetter, later commissioned as HMS ''Robin'' and used by the Fleet Air Arm. Control passed in 1948 to the Ministry of Civil Aviation and in 1986 to Highlands and Islands Airports.<ref>{{cite web|url=http://www.hial.co.uk/kirkwall-airport/about-us/|title=Kirkwall Airport: About Us|publisher=Highlands and Islands Airports|access-date=4 January 2015|archive-date=18 August 2010|archive-url=https://web.archive.org/web/20100818011543/http://www.hial.co.uk/kirkwall-airport/about-us/|url-status=dead}}</ref>
=== Royal Air Force === The following RAF units were here at some point: {{columns-list|colwidth=18em| * No. 129 Squadron RAF (1942–43){{sfn|Jefford|1988|p=58}} * No. 132 Squadron RAF (1942){{sfn|Jefford|1988|p=59}} * No. 234 Squadron RAF (1943){{sfn|Jefford|1988|p=75}} * No. 2704 Squadron RAF Regiment<ref name="ABCT">{{cite web |url=https://www.abct.org.uk/airfields/airfield-finder/grimsetter-kirkwall/ |title=Grimsetter (Kirkwall) |publisher=Airfields of Britain Conservation Trust |access-date=21 April 2022 |archive-date=26 June 2022 |archive-url=https://web.archive.org/web/20220626110421/https://abct.org.uk/airfields/airfield-finder/grimsetter-kirkwall/ |url-status=live }}</ref> * No. 2766 Squadron RAF Regiment<ref name="ABCT"/> }}
=== Royal Navy === On 6 July 1943, RAF Grimsetter was transferred on loan to the Admiralty and known as Royal Naval Air Station Grimsetter, (RNAS Grimsetter). On 15 August, it was commissioned as HMS ''Robin'', as a satellite to RNAS Hatston (HMS ''Sparrowhawk''),<ref name="rnra-grimsetter">{{cite web|title=Grimsetter |url= https://www.royalnavyresearcharchive.org.uk/FAA-Bases/Grimsetter.htm |work=Royal Navy Research Archive - Fleet Air Arm Bases 1939 - present day |access-date=4 November 2023}}</ref> located {{cvt|1|mile}} to the north west of Kirkwall.
The following Fleet Air Arm units were here at some point:{{sfn|Sturtivant|Ballance|1994|p=365}} {{columns-list|colwidth=18em| * 800 Naval Air Squadron<ref name="ABCT"/> * 801 Naval Air Squadron<ref name="ABCT"/> * 807 Naval Air Squadron<ref name="ABCT"/> * 824 Naval Air Squadron<ref name="ABCT"/> * 825 Naval Air Squadron<ref name="ABCT"/> * 825X Naval Air Squadron * 826 Naval Air Squadron<ref name="ABCT"/> * 841 Naval Air Squadron<ref name="ABCT"/> * 842 Naval Air Squadron<ref name="ABCT"/> * 846 Naval Air Squadron<ref name="ABCT"/> * 848 Naval Air Squadron<ref name="ABCT"/> * 849 Naval Air Squadron<ref name="ABCT"/> * 880 Naval Air Squadron<ref name="ABCT"/> * 881 Naval Air Squadron<ref name="ABCT"/> * 882 Naval Air Squadron<ref name="ABCT"/> * 884 Naval Air Squadron<ref name="ABCT"/> * 887 Naval Air Squadron<ref name="ABCT"/> * 894 Naval Air Squadron<ref name="ABCT"/> * 899 Naval Air Squadron<ref name="ABCT"/> * 1770 Naval Air Squadron<ref name="ABCT"/> * 1834 Naval Air Squadron<ref name="ABCT"/> * 1840 Naval Air Squadron<ref name="ABCT"/> }}
==Airlines and destinations== {{Airport-dest-list |Loganair<ref>[https://www.hial.co.uk/kirkwall-airport/destinations-7/1 hial.co.uk - Destinations from Kirkwall Airport] retrieved 9 March 2024</ref> |Aberdeen (Direct),<ref name="OAG_World_Nov2023_502">{{Cite journal|author=<!-- not stated -->|journal=OAG Flight Guide Worldwide|title=Kirkwall|date=November 2023|volume=25|issue=5|publisher=OAG Aviation Worldwide Limited|publication-place=Luton, United Kingdom|issn=1466-8718|language=en|pages=502}}</ref><br /> Edinburgh (Direct),<ref>{{Cite web|last1=Liu|first1=Jim|url=https://www.aeroroutes.com/eng/240227-lmns24|title=Loganair NS24 Service Changes – 25FEB24|website=Aeroroutes.com|accessdate=2 November 2024|language=en-CA|archive-date=15 June 2024|archive-url=https://web.archive.org/web/20240615175506/https://www.aeroroutes.com/eng/240227-lmns24|url-status=live}}</ref><br /> Glasgow (Direct),<ref name="OAG_World_Nov2023_502"/><br /> Inverness (Direct),<ref name="OAG_World_Nov2023_502"/><br /> Sumburgh (Direct),<ref name="OAG_World_Nov2023_502"/><br /> Eday (Inter-island),<ref name="auto">{{Cite web|url=https://www.orkney.gov.uk/Service-Directory/T/internal-air-services.htm | archive-url=https://web.archive.org/web/20230328215158/https://www.orkney.gov.uk/Service-Directory/T/internal-air-services.htm | archive-date=2023-03-28 |title=Orkney Islands Council - Internal Air Services |website=www.orkney.gov.uk}}</ref><br /> North Ronaldsay (Inter-island),<ref name="auto"/><br /> Papa Westray (Inter-island),<ref name="auto"/><br /> Sanday (Inter-island),<ref name="auto"/><br /> Stronsay (Inter-island),<ref name="auto"/><br /> Westray (Inter-island)<ref>{{Cite web | title=Internal Air Services | url=https://www.orkney.gov.uk/Service-Directory/T/internal-air-services.htm | archive-url=https://web.archive.org/web/20150325061332/http://www.orkney.gov.uk/Service-Directory/T/internal-air-services.htm | access-date=2025-11-23 | archive-date=25 March 2015 | url-status=live }}</ref><br /> Belfast–City (Indirect – connection via Inverness),{{efn|Belfast–City service is a continuation of the Inverness service as the same flight number}}<ref name="orcadian.co.uk">{{cite web |title=Belfast and Manchester added to Kirkwall's flight schedule |date=19 September 2024 |url=https://orcadian.co.uk/belfast-and-manchester-added-to-kirkwalls-flight-schedule/ |access-date=19 September 2024 |archive-date=19 September 2024 |archive-url=https://web.archive.org/web/20240919190830/https://orcadian.co.uk/belfast-and-manchester-added-to-kirkwalls-flight-schedule/ |url-status=live }}</ref><br /> Manchester (Indirect – connection via Inverness),{{efn|Manchester service is a continuation of the Inverness service as the same flight number}}<ref name="orcadian.co.uk"/><br /> '''Seasonal:'''<br />Bergen (Indirect - connection via Sumburgh)<br /> Dundee (Direct),<ref>{{Cite web|last1=Liu|first1=Jim|url=https://www.aeroroutes.com/eng/221225-ns23gb|title=UK NS23 New Routes Addition Summary – 25DEC22|website=Aeroroutes.com|accessdate=2 November 2024|language=en-CA|archive-date=24 December 2024|archive-url=https://web.archive.org/web/20241224202524/https://www.aeroroutes.com/eng/221225-ns23gb|url-status=live}}</ref><br /> London–Heathrow (Indirect – connection via Dundee)(ends 28 September 2026){{efn|London Heathrow service is a continuation of the Dundee service as the same flight number}}<ref>{{Cite web|last1=Liu|first1=Jim|url=https://www.aeroroutes.com/eng/230419-lmlhr|title=Loganair Moves Derry / Dundee – London Service to Heathrow From May 2023|website=Aeroroutes.com|accessdate=2 November 2024|language=en-CA|archive-date=19 April 2023|archive-url=https://web.archive.org/web/20230419044805/https://www.aeroroutes.com/eng/230419-lmlhr|url-status=live}}</ref><ref>https://news.stv.tv/north/flights-from-dundee-to-london-heathrow-to-end</ref> }}
===Cargo=== {{Airport destination list <!-- --> | Loganair | Glasgow,<ref name="auto1">{{cite news | url=https://www.bbc.co.uk/news/uk-scotland-highlands-islands-38810648 | title=Loganair secures new Royal Mail contract | work=BBC News | date=31 January 2017 | archive-date=24 November 2018 | access-date=2 October 2023 | archive-url=https://web.archive.org/web/20181124103949/https://www.bbc.co.uk/news/uk-scotland-highlands-islands-38810648 | url-status=live }}</ref> Sumburgh<ref name="auto1"/> <!-- --> }}
== Statistics and traffic == === Annual traffic statistics === <!--{{Airport-Statistics|iata=KOI}}--> {| class="wikitable" |+Traffic statistics at Kirkwall Airport<ref name=":0">{{cite web|title=UK airport data {{!}} UK Civil Aviation Authority|url=https://www.caa.co.uk/data-and-analysis/uk-aviation-market/airports/uk-airport-data/|access-date=15 July 2024|website=caa.co.uk|archive-date=26 March 2024|archive-url=https://web.archive.org/web/20240326165259/https://www.caa.co.uk/data-and-analysis/uk-aviation-market/airports/uk-airport-data/|url-status=live}}</ref> !rowspan=2|Year !colspan=2|Terminal and Transit Passengers{{efn|CAA Table 09}} !colspan=2|Air Transport Movements{{efn|CAA Table 4.1}} ! |- !Passengers!!% change!!Movements!!% change!!Notes |- |'''2015''' |align=right|160,234 |align=right|{{Steady}} |align=right|10,701 |align=right|{{Steady}} | |- |'''2016''' |align=right|163,029 |align=right|{{increase}} {{0}}2% |align=right|11,045 |align=right|{{increase}} {{0}}3% |<ref name="caa2016-17p"/><ref name="caa2016at">{{cite web |title=UK airport data 2016 / Annual / Table 04.1 Air Transport Movements |url=https://www.caa.co.uk/Documents/Download/3968/e9d465f7-f3da-4daa-9bf0-205785ab7523/450|website=CAA.co.uk |access-date=14 May 2026}}</ref> |- |'''2017''' |align=right|177,248 |align=right|{{increase}} {{0}}9% |align=right|12,008 |align=right|{{increase}} {{0}}9% |<ref name="caa2016-17p">{{cite web |title=UK airport data 2016-17 / Annual / Table 09 Passengers |url=https://www.caa.co.uk/Documents/Download/3959/b32abdb1-d9f3-4eb9-9d52-1c2aedbf0f03/822|website=CAA.co.uk |access-date=14 May 2026}}</ref><ref name="caa2017at">{{cite web |title=UK airport data 2017 / Annual / Table 04.1 Air Transport Movements|url=https://www.caa.co.uk/Documents/Download/3959/b32abdb1-d9f3-4eb9-9d52-1c2aedbf0f03/817 |website=CAA.co.uk |access-date=14 May 2026}}</ref> |- |'''2018''' |align=right|181,562 |align=right|{{increase}} {{0}}2% |align=right|11,840 |align=right|{{decrease}} {{0}}1% |<ref name="caa2018-19p"/><ref name="caa2018at">{{cite web |title=UK airport data 2018 / Annual / Table 04.1 Air Transport Movements|url=https://www.caa.co.uk/Documents/Download/3954/9892891f-1fff-49ae-bf30-656085666dbb/1058 |website=CAA.co.uk |access-date=14 May 2026}}</ref> |- |'''2019''' |align=right|172,625 |align=right|{{Decrease}} {{0}}5% |align=right|11,256 |align=right|{{Decrease}} {{0}}5% |<ref name="caa2018-19p">{{cite web |title=UK airport data 2018-19 / Annual / Table 09 Passengers |url=https://www.caa.co.uk/Documents/Download/3951/e925ed1f-e4b5-4d12-ad1c-e95e0b5b3307/1330 |website=CAA.co.uk |access-date=14 May 2026}}</ref><ref name="caa2019at">{{cite web |title=UK airport data 2019 / Annual / Table 04.1 Air Transport Movements|url=https://www.caa.co.uk/Documents/Download/3951/e925ed1f-e4b5-4d12-ad1c-e95e0b5b3307/1324 |website=CAA.co.uk |access-date=14 May 2026}}</ref> |- |'''2020''' |align=right|61,177 |align=right|{{Decrease}} 65% |align=right|7,452 |align=right|{{Decrease}} 34% |<ref name="caa2020-21p"/><ref name="caa2020at">{{cite web |title=UK airport data 2020 / Annual / Table 04.1 Air Transport Movements|url=https://www.caa.co.uk/Documents/Download/3942/84777cab-434d-4271-8990-5da13e832674/1686 |website=CAA.co.uk |access-date=14 May 2026}}</ref> |- |'''2021''' |align=right|85,665 |align=right|{{increase}} 40% |align=right|8,446 |align=right|{{increase}} 13% |<ref name="caa2020-21p">{{cite web |title=UK airport data 2020-21 / Annual / Table 09 Passengers |url=https://www.caa.co.uk/Documents/Download/9115/8cce8a5d-a76b-4652-8fab-41ae2288f104/4649 |website=CAA.co.uk |access-date=14 May 2026}}</ref><ref name="caa2021at">{{cite web |title=UK airport data 2021 / Annual / Table 04.1 Air Transport Movements|url=https://www.caa.co.uk/Documents/Download/9115/8cce8a5d-a76b-4652-8fab-41ae2288f104/4637 |website=CAA.co.uk |access-date=14 May 2026}}</ref> |- |'''2022''' |align=right|133,410 |align=right|{{increase}} 56% |align=right|9,881 |align=right|{{increase}} 17% |<ref name="caa2022-23p"/><ref name="caa2022at">{{cite web |title=UK airport data 2022 / Annual / Table 04.1 Air Transport Movements|url=https://www.caa.co.uk/Documents/Download/9116/47a460b2-0592-4ef7-b24b-aa5e27ccfce4/5626 |website=CAA.co.uk |access-date=14 May 2026}}</ref> |- |'''2023''' |align=right|143,093 |align=right|{{increase}} {{0}}7% |align=right|10,320 |align=right|{{increase}} {{0}}4% |<ref name="caa2022-23p">{{cite web |title=UK airport data 2022-23 / Annual / Table 09 Passengers |url=https://www.caa.co.uk/Documents/Download/10288/81d07410-dbcd-46e7-aacc-d0a5accf0d90/16468 |website=CAA.co.uk |access-date=14 May 2026}}</ref><ref name="caa2023at">{{cite web |title=UK airport data 2023 / Annual / Table 04.1 Air Transport Movements|url=https://www.caa.co.uk/Documents/Download/10288/81d07410-dbcd-46e7-aacc-d0a5accf0d90/16456 |website=CAA.co.uk |access-date=14 May 2026}}</ref> |- |'''2024''' |align=right|149,503 |align=right|{{increase}} {{0}}4% |align=right|10,011 |align=right|{{decrease}} {{0}}3% |<ref name="caa2024-25p"/><ref name="caa2024at">{{cite web |title=UK airport data 2024 / Annual / Table 04.1 Air Transport Movements|url=https://www.caa.co.uk/Documents/Download/11911/0af1d44e-1648-4fd7-94e3-0b9697934148/17006|website=CAA.co.uk |access-date=14 May 2026}}</ref>
|- |'''2025''' |align=right|157,051 |align=right|{{increase}} {{0}}5% |align=right|10,274 |align=right|{{increase}} {{0}}3% |<ref name="caa2024-25p">{{cite web |title=UK airport data 2024-25 / Annual / Table 09 Passengers |url=https://www.caa.co.uk/Documents/Download/24007/87fb7670-4e10-4aeb-942d-509238aa25a1/17553 |website=CAA.co.uk |access-date=14 May 2026}}</ref><ref name="caa2025at">{{cite web |title=UK airport data 2025 / Annual / Table 04.1 Air Transport Movements|url=https://www.caa.co.uk/Documents/Download/24007/87fb7670-4e10-4aeb-942d-509238aa25a1/17541|website=CAA.co.uk |access-date=14 May 2026}}</ref>
|}
=== Busiest routes === {| class="wikitable sortable" |+Busiest routes to and from Kirkwall (2023)<ref>{{Cite web|url=https://www.caa.co.uk/data-and-analysis/uk-aviation-market/airports/uk-airport-data/uk-airport-data-2023/annual-2023/|title=Annual airport data 2023 | UK Civil Aviation Authority|website=www.caa.co.uk|access-date=15 May 2024|archive-date=26 March 2024|archive-url=https://web.archive.org/web/20240326165259/https://www.caa.co.uk/data-and-analysis/uk-aviation-market/airports/uk-airport-data/uk-airport-data-2023/annual-2023/|url-status=live}}</ref> !Rank !Airport !Passengers handled !Change<br />2022–23 |- |'''1''' | Aberdeen |42,821 |{{increase}} 5.0% |- |'''2''' | Edinburgh |38,277 |{{increase}} 16.0% |- |'''3''' | Glasgow |17,340 |{{increase}} 10.0% |- |'''4''' | Sumburgh |6,171 |{{decrease}} 20.0% |- |'''5''' | North Ronaldsay |5,903 |{{increase}} 7.0% |- |'''6''' | Inverness |5,251 |{{decrease}} 9.0% |- |'''7''' | Westray |4,891 |{{increase}} 2.0% |- |'''8''' | Papa Westray |4,595 |{{increase}} 16.3% |- |'''9''' | Sanday |3,211 |{{increase}} 7.0% |- |'''10''' | Stronsay |3,033 |{{increase}} 1.0% |- |'''11''' | Heathrow |2,600 |{{steady}} |- |'''12''' | Eday |523 |{{increase}} 73.0% |- |'''13''' | London City |231 |{{steady}} |- |'''14''' | Dundee |209 |{{steady}} |}
==Accidents and incidents== [[File:Vickers Viscount 735 G-BFYZ Guernsey Airlines F163-20.jpg|thumb|Vickers Viscount ''G-BFYZ'' damaged 1979 at Kirkwall (seen in Stuttgart, earlier in 1979)]] *'''25 October 1979''' – A Vickers Viscount G-BFYZ of Alidair was damaged beyond economic repair when the aircraft departed the runway after #4 propeller struck the runway. The nosewheel collapsed when the aircraft reached an intersecting runway.<ref name=ASN251079>{{cite web |url=http://aviation-safety.net/database/record.php?id=19791025-0 |title=Accident description |publisher=Aviation Safety Network |access-date=8 October 2009 |archive-date=25 October 2012 |archive-url=https://web.archive.org/web/20121025121225/http://aviation-safety.net/database/record.php?id=19791025-0 |url-status=live }}</ref> *'''4 January 2025''' - A man was jailed after repeatedly telling airport staff a friend of his was going to hijack an airplane and crash it into the airport. The threats were deemed 'not credible' by airport security.<ref>{{Cite web|date=2025-10-31|title=Man jailed for bomb threats that shut down Kirkwall Airport|url=https://www.bbc.com/news/articles/c78z75jlz3ko|access-date=2025-11-03|website=www.bbc.com|language=en-GB|archive-date=3 November 2025|archive-url=https://web.archive.org/web/20251103063651/https://www.bbc.com/news/articles/c78z75jlz3ko|url-status=live}}</ref>
==Green energy== Hydrogen production by electrolysis of water was well under way in late 2020 in Orkney, where clean energy sources (wind, waves, tides) were generating excess electricity that could be used to produce hydrogen gas (H<sub>2</sub>).<ref>{{cite web |url=https://www.bbc.com/future/article/20190327-the-tiny-islands-leading-the-way-in-hydrogen-power |title=How hydrogen is transforming these tiny Scottish islands |date=27 March 2019 |publisher=BBC News |access-date=7 February 2021 |archive-date=14 October 2019 |archive-url=https://web.archive.org/web/20191014094933/https://www.bbc.com/future/article/20190327-the-tiny-islands-leading-the-way-in-hydrogen-power |url-status=live }}</ref> A plan was under way at Kirkwall Airport to add a hydrogen combustion engine system to the heating system in order to reduce the significant emissions that were created with older technology that heated buildings and water. This was part of the plan formulated by the Scottish government for the Highlands and Islands "to become the world's first net zero aviation region by 2040".<ref>{{cite web |url=https://hydrogeneast.uk/green-hydrogen-set-to-decarbonise-airport/ |title=Green hydrogen set to decarbonise airport |date=20 December 2020 |work=Hydrogen East |access-date=7 February 2021 |archive-date=2 February 2021 |archive-url=https://web.archive.org/web/20210202151112/https://hydrogeneast.uk/green-hydrogen-set-to-decarbonise-airport/ |url-status=dead }}</ref>
==Artwork== The signage on the airport's terminal roof is written in runes. The symbols spell the word 'Krimsitir' or 'Grimsetter'<ref>{{cite web | url=https://www.orkneyology.com/kirkwall-airport.html | title=Kirkwall Airport, Orkney: Memories from a Neighbor | access-date=28 June 2024 | archive-date=28 June 2024 | archive-url=https://web.archive.org/web/20240628201819/https://www.orkneyology.com/kirkwall-airport.html | url-status=live }}</ref>{{better source needed|just a passing mention of its existence, no reliable source|date=June 2024}}, the name of the bay next to which the airfield is located, which was similarly the name of the former RAF base and the name of the farm upon which the airfield was built.
{{clear}}
==References== ===Notes=== {{notelist}}
===Citations=== {{reflist}}
===Bibliography=== {{refbegin}} *{{cite book |last1=Jefford |first1= C.G. |title= RAF Squadrons. A comprehensive record of the movement and equipment of all RAF squadrons and their antecedents since 1912 |year=1988 |publisher= Airlife |location= Shrewsbury |isbn= 1-85310-053-6}} *{{cite book |last1=Sturtivant |first1=R |last2=Ballance |first2=T |title=The Squadrons of The Fleet Air Arm |year=1994 |publisher=Air-Britain (Historians) Ltd |location=Tonbridge, Kent, UK |isbn=0-85130-223-8}} {{refend}}
== External links == * {{Official website}}
{{Airports in Scotland}} {{Airports in the United Kingdom}} {{Royal Naval Air Stations}}
{{authority control}}
Category:Airports in Orkney Category:Airports in Scotland Category:Highlands and Islands Airports Category:Kirkwall Category:Airports established in 1940 Category:Civilian airports with RAF origins