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Željava Air Base

Željava Air Base, situated on the border between Croatia and Bosnia and Herzegovina under the mountain Plješevica, near the city of Bihać, Bosnia, was the largest underground airport and military air base in Yugoslavia, and one of the largest in Europe. The facilities are shared by the local governments of Bihać and Lika-Senj County in Croatia.

Željava Airbase
Aerodrom Željava
  • IATA: none
  • ICAO: LYBI
Summary
Airport type Military air base
Serves Bihać,   Bosnia and Herzegovina
Location Željava,   Croatia
Elevation AMSL 1,126 ft / 343 m
Coordinates 44°50′11″N
15°45′29″E
Map

Location in Bosnia and Herzegovina

Runways
Direction Length Surface
ft m
14L/32R (Croatia) 8,325 2,500 Asphalt
14R/32L (Croatia & BiH) 8,325 2,500 Asphalt
08R/26L (Croatia & BiH) 6,863 2,061 Asphalt
01/19 (Croatia) 9,257 2,780 Asphalt
08L/26R (BiH & Croatia) 6,826 2,050 Asphalt

History

Construction of the Željava or Bihać Air Base (code-named "Objekat 505") was inspired by mountain hangars used by the Swedish Göta Air Force Wing (F 9), began in 1948 and was completed in 1968. During those two decades, SFRJ (Socialist Federal Republic of Yugoslavia) spent approximately $6 billion on its construction, three times the combined current annual military budgets of Serbia and Croatia. It was one of the largest and most expensive military construction projects in Europe.


Željava Air Base
Željava Air Base.

Douglas C-47 on the airbase entrance

Description

The role of the facility was to establish, integrate, and coordinate a nationwide early warning radar network in SFRJ akin to NORAD. The complex was designed and built to sustain a direct hit from a 20-kiloton nuclear bomb, equivalent to the one dropped on Nagasaki.

Strategic role

The main advantage of the base was the strategic location of its "Celopek" intercept and surveillance radar on Mount Pljesevica, at the nerve center of an advanced integrated air defense network covering the airspace and territory of Yugoslavia, and possibly further. In addition to its main roles as a protected radar installation, control center, and secure communications facility, the airbase contained tunnels housing two full fighter squadrons, one reconnaissance squadron, and associated maintenance facilities. The units based there were the 124.LAE (Fighter Aviation Squadron) and 125.LAE, both equipped with MiG-21bis fighter aircraft, and the 352.IAE (Reconnaissance Aviation Squadron), equipped with MiG-21R reconnaissance-fighter aircraft.


Željava Air Base
Željava Air Base.

Runway 01 with explosion craters on the left side


Željava Air Base
Željava Air Base.

Runway 14L, the main landing runway, 45 meters wide

The tunnels ran a total length of 3.5 kilometers, and the bunker had four entrances protected by 100-ton pressurized doors, three of which were customized for use by fixed-wing aircraft. Eventually, it was hoped that the base would be re-equipped with the indigenously developed Yu Supersonik aircraft.

Underground "KLEK" complex

The underground facility was lined with semicircular concrete shields, arranged every ten meters, to cushion the impact of incoming munitions. The complex included an underground water source, power generators, crew quarters, and other strategic military facilities. It also housed a mess hall that could feed 1,000 people simultaneously, along with enough food, fuel, and arms to last 30 days without resupply. Fuel was supplied by a 20-kilometer underground pipe network that ran from a military warehouse on Pokoj Hill near Bihać.


Željava Air Base
Željava Air Base.

Surface

Above ground, the facility had five runways and within the immediate vicinity of the base, there were numerous short-range mobile tracking and targeting radars; surface to air missile sites equipped with; 2K12 "Kub" (NATO: SA-6) mobile surface-to-air missile interceptor systems, motorized infantry bases, two Quick Reaction Alert aircraft ready for take off at any moment, military police stations, and a hunting lodge used by civilian and military leaders on occasional leisure trips.

Access points were heavily monitored and guards were authorized to fire upon anyone attempting to enter without authorization. In practice, however, only special permits were required and unauthorized visitors usually turned away.

Destruction

The airbase was used intensively in 1991, during the Yugoslav Wars. During its withdrawal, the Yugoslav People's Army destroyed the runway by filling pre-built spaces (explicitly designed for the purpose) with explosives and detonating them. To prevent any possible further use of the complex by Croatian and Bosnia-Herzegovinan forces, the Military of Serbian Krajina completed the destruction in 1992 by setting off an additional 56 tons of explosives there. The ensuing explosion was so powerful that it shook the nearby city of Bihać. Residents of nearby villages claimed that smoke continued to rise from the tunnels for six months after the explosion.

Current status

Local police forces and the CPA currently use the area to train canines with actual land mines, given the extensive number of mines still in the vicinity. Because of the mines, extreme caution must be used when visiting the Željava complex. In November 2000, a Bosnian Air Force Major died from his injuries after setting off a PROM-2 anti-personnel mine while searching for mushrooms.

The toll of the destruction on base buildings and equipment is incalculable and caused great environmental damage. Potential reconstruction endeavors are limited by a lack of financial resources. An international border cuts the base area in two, and the entire area is heavily mined. The barracks in the nearby village of Ličko Petrovo Selo are operated by the Croatian Army.


Željava Air Base
Željava Air Base.

Today, the base often serves as a waypoint for illegal migrants. A facility for asylum seekers was scheduled to open there in 2004 or 2005, but the idea was abandoned, and new plans were developed for it to become part of the Slunj military training grounds, and barracks from the nearby Udbina complex. This idea was dropped, however, in line with the agreement between the countries of former Yugoslavia which bans any military facility up to 15 km inside the borders.

The Bihać Municipality launched an initiative to open a local airport using the runway.



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