Live · state aircraft
The doomsday plane: what the E-4B Nightwatch is and why it flies
"Doomsday plane" is the nickname of the US Air Force's E-4B Nightwatch, a heavily modified Boeing 747 built to keep the country's leaders in command of its forces if command posts on the ground are lost.
E-4B Nightwatch
Broadcasting now: no
No E-4B is broadcasting a position we can hear, as of .
Last heard by us: 17:56 UTC, 14 November 2026, over Nebraska, United States. Days heard in the last 30: 6.
E-6B Mercury aircraft broadcasting a position now: 0, as of .
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What is the doomsday plane?
The E-4B Nightwatch serves as the National Airborne Operations Center, part of the system the President, the Secretary of Defense and the Joint Chiefs use to command US forces (Air Force fact sheet). It is hardened against the effects of a nuclear blast, can refuel in the air, and also carries the Secretary of Defense on many trips. The Navy's E-6B Mercury is sometimes given the same nickname.
How many doomsday planes does the US have?
The Air Force flies four E-4Bs, all assigned to the 595th Command and Control Group at Offutt Air Force Base, Nebraska, with at least one kept on alert (background). The Navy flies a separate fleet of E-6B Mercury aircraft from Tinker Air Force Base in Oklahoma (background). Their transponder addresses for the E-4B are ADFEB3, ADFEB4, ADFEB5, ADFEB6.
| Aircraft | Operator | Base | Role |
|---|---|---|---|
| Boeing E-4B Nightwatch (747-200) | US Air Force, 595th Command and Control Group | Offutt Air Force Base, Nebraska | National Airborne Operations Center: a flying command post for the national command authorities |
| Boeing E-6B Mercury (707-based) | US Navy, Strategic Communications Wing One | Tinker Air Force Base, Oklahoma | Relays orders to ballistic-missile submarines and nuclear forces (the "TACAMO" mission) |
Why did the doomsday plane fly?
Usually for ordinary reasons. Crews fly training and readiness sorties, and E-4Bs carry the Secretary of Defense on official travel. A sighting near a city or an air show is not a sign of a crisis. We show only what the aircraft broadcast, and never guess at a purpose.
How often does the doomsday plane fly?
In our log (which began on 4 November 2026), an E-4B broadcast a position we could hear on 6 of the last 30 days; most recently at 17:56 UTC, 14 November 2026, over Nebraska, United States. The fleet flies regular training and readiness sorties, and one aircraft is kept on alert, so "rare sightings" in the news are usually routine flights.
How long can it stay in the air?
Because the E-4B can refuel in flight, fuel does not limit it the way it limits most aircraft; its endurance is set by things like engine oil and the crew. Real flights are normally far shorter. The figures are on the Air Force fact sheet.
What's inside the E-4B?
Public sources describe three decks of work areas: a command area, a conference room, a briefing room, an operations team area, communications rooms and rest areas, with satellite and radio links that reach almost any military unit. The airframe and electronics are hardened against electromagnetic pulse, and it can carry a large crew and staff for long periods.
What will replace it?
The Air Force is replacing the E-4B with the Survivable Airborne Operations Center (SAOC), based on the 747-8, under a contract awarded to Sierra Nevada Corporation in 2024 (background). The Navy plans to replace the E-6B with a C-130J-based aircraft known as the E-130J.
Does Russia have a doomsday plane?
Yes. Russia's counterpart is the Ilyushin Il-80, an airborne command post converted from the Il-86 airliner (background). Like the E-4B, it rarely appears on public trackers.
Can you track the doomsday plane?
Sometimes. When an E-4B broadcasts its position on ADS-B, volunteer receivers hear it and it appears in the box above, live, with the state or sea it is over and its altitude. Often it broadcasts nothing we can use. We hold back nothing that is broadcast openly, but we never predict where it is going.
Our rules: what we show and what we hold back
- We show only what aircraft broadcast openly on 1090 MHz and volunteer receivers pick up. Nothing here is secret or hacked.
- Military and government aircraft that broadcast are shown live. Aircraft whose owners opted out of public display through the FAA's LADD or Privacy ICAO Address programmes never are.
- We never predict or infer where an aircraft or a person is going, and we don't label missions. Aircraft are sorted by type.
- We name aircraft, not people. Registrations and owners are not shown.
- If you think something here should not be, email [email protected].
Related
Sources
- US Air Force fact sheet: E-4B
- Boeing E-4 and Boeing E-6 Mercury (Wikipedia, for fleet history and replacements)
- Live positions: adsb.lol's open military list, read every few minutes
Last reviewed . Corrections: [email protected].
Live data can be late, incomplete or wrong. Not for navigation or safety decisions.
Flight positions: ADS-B and MLAT from the volunteer receivers of adsb.lol (ODbL 1.0) · Map and place names: Natural Earth (public domain). All data sources.