Lockheed L-1011 TriStar

Updated: October 2026 – A wide trijet, but the third engine seems to be missing: there is no engine up in the fin, only a flat air inlet right ahead of it, and at the rear of the fuselage an exhaust jet glows. That is exactly what a Lockheed L-1011 TriStar looks like. Today it is a historic aircraft that you find almost only in museums, on storage aprons or in old slides. For many spotters in the Rhineland it is still a piece of childhood, because LTU flew it from Düsseldorf for over two decades. On this page you’ll learn how to reliably tell the TriStar from the DC-10 and MD-11, which versions existed and where the type still turns up today.

What is the Lockheed L-1011 TriStar?

The L-1011 is a three-engine widebody jet that Lockheed developed in the late 1960s for medium and long haul. It belongs to the first generation of widebodies that came to market after the Boeing 747 and targeted a need that US airlines saw at the time: an aircraft with significantly more seats than the narrow four-engine jets, but smaller and more economical than the jumbo – for routes across the US, for example.

McDonnell Douglas had the same idea with the DC-10. Both aircraft have two aisles, three engines and similar dimensions – and both competed for the same customers. The result is well known: the DC-10 sold far better, and the TriStar stayed at 250 aircraft built. For Lockheed it was the last civil airliner. After that the company concentrated on military programs such as the C-130 Hercules, today under the umbrella of Lockheed Martin.

The first flight took place on November 16, 1970. In April 1972 came certification and the start of operations with Eastern Air Lines. The TriStar was built in Palmdale, California, and the last aircraft went to customers in the mid-1980s.

The Rolls-Royce crisis: a false start with consequences

Lockheed bet entirely on a new engine for the TriStar: the Rolls-Royce RB211, a three-shaft turbofan that was technically very ambitious at the time. Development got out of hand, costs exploded, and in February 1971 Rolls-Royce had to go into receivership. The British state took over the company so the engine could be completed. Lockheed itself also got into trouble and needed backing from the US government.

For the TriStar this meant roughly a year of delay. In that time McDonnell Douglas was already delivering the first DC-10s; American Airlines received its first aircraft in the summer of 1971. The DC-10 also offered a choice of engines and was cheaper to get. The TriStar, in contrast, was available only with the RB211, which later proved a successful engine family but spoiled the TriStar’s start. You’ll find more on the engine manufacturer on the page for Rolls-Royce.

On top of that, the early L-1011-1 had only limited range. For true intercontinental routes it was hardly suitable at first. Only the later L-1011-500 closed this gap – at a time when the market was already moving toward twin-engine widebodies such as the Airbus A300.

Technology: why the TriStar was considered a high-tech airliner

Despite its commercial failure, the TriStar enjoys an excellent reputation among pilots and tech fans. Several features were unusual in the 1970s:

• Autoland up to Category IIIc: The TriStar was the first widebody jet certified for automatic landings in practically zero visibility.
• Direct Lift Control: On approach, automatically controlled spoilers regulated lift. This made it possible to hold the glide path without the nose constantly bobbing up and down.
• All-moving tailplane instead of a trim stabilizer: The entire horizontal stabilizer moves as a whole.
• S-duct center engine: The third engine sits in the tail, and the air reaches the engine through an S-shaped duct from the inlet above the fuselage – the same principle as on the Boeing 727, only on a widebody scale.

The S-duct in particular shapes the silhouette and is the key to identification. The guide Identifying engines shows how different engine arrangements look.

The three features that are enough to identify it

Once you’ve consciously seen the TriStar next to a DC-10, you’ll never mix them up again. These three steps lead you to the answer reliably – even on old photos.

As for the version: the L-1011-500 is visibly shorter, has fewer doors on each side and longer wingtips. The registration settles the rest, and you can look up any aircraft in databases with it. How to tell types apart by their landing gear in general is explained in the article Landing gear configurations as an identification feature.

TriStar, DC-10 or MD-11?

All three are large trijets from the same era, and at first glance they look similar. The table sums up the most important differences.

Feature	L-1011 TriStar	DC-10	MD-11
ICAO type designator	L101	DC10	MD11
Center engine	deep in the tail, S-duct	straight tube in the fin	straight tube in the fin
Engine choice	Rolls-Royce RB211 only	GE or Pratt & Whitney	GE or Pratt & Whitney
Winglets	no	no	yes
Center landing gear	no	on the -30 and -40	yes
In service today	practically no longer	only isolated	mainly as a freighter

You also recognize the MD-11 by its small winglets pointing up and down. A military relative of the DC-10 is the KC-10 Extender tanker – it, too, has the engine in the fin.

The versions at a glance

Lockheed built the TriStar in several variants, some of which hardly differ on the outside. For spotters, the jump from the long versions to the short -500 is the most visible.

Version	Version characteristics
L-1011-1	Original production version with RB211-22, around 54 m long, largest production numbers
L-1011-100	Additional center tank and higher weights for more range
L-1011-200	More powerful RB211-524B engines, intended for hot and high-altitude airports
L-1011-50, -150, -250	Later conversions of older airframes with higher weights
L-1011-500	About four meters shorter, more fuel, extended wingtips, true long haul

The L-1011-500 first flew on October 16, 1978; the launch customer was British Airways, which put it into scheduled service from May 1979. At London Heathrow Airport the TriStar was thus a familiar sight for a long time. With the -500, Lockheed finally had a long-haul type, but orders remained modest.

The TriStar with LTU

In Germany the TriStar had exactly one operator: the Düsseldorf charter airline LTU. From spring 1973 the first aircraft flew from Düsseldorf Airport to the Mediterranean. LTU initially used the long versions and fitted them with dense seating for holiday traffic. For years LTU’s widebody fleet consisted exclusively of TriStars, and the white-and-red trijets became a symbol of package holidays from the Rhineland.

From 1980 L-1011-500s were added. In the TriStar era LTU also opened up more distant holiday destinations such as Sri Lanka, the Maldives, Thailand and Kenya. A well-known turning point was June 28, 1991: during maintenance work in Düsseldorf the TriStar D-AERI burned out; nobody was injured. In 1996, after 23 years, LTU said goodbye to its last TriStars.

Anyone who stood at the Düsseldorf fence back then probably has the L101 in the logbook. How to organize your historic sightings today is shown in the article Collecting all aircraft types.

The TriStar with the Royal Air Force

The TriStar had a second career in Britain. In the 1980s the Royal Air Force took over second-hand L-1011-500s: six from British Airways and three from Pan Am. Four versions emerged from them:

• TriStar K1: Tanker, alternatively also usable as a troop transport
• TriStar KC1: Tanker with a large cargo door on the left side of the fuselage
• TriStar C2: Pure transport, close to the civil version
• TriStar C2A: Like the C2, but with additional military communications equipment

The aircraft were based with No. 216 Squadron at RAF Brize Norton. They refueled fighters in the air and flew troops and materiel to operating areas. In March 2014 the TriStars flew their last missions and the squadron was disbanded. The successor is the Airbus A330 MRTT. How to identify tankers in general is covered in the guide Identifying tanker aircraft.

Other operators worldwide

The largest customer was Delta Air Lines, which used the TriStar until 2001. The upper forward fuselage of the prototype is on display today at the Delta Flight Museum in Atlanta, near Atlanta Airport. The launch customer and first operator was the historic Eastern Air Lines; other operators of the trijet included TWA, Pan Am, British Airways, Cathay Pacific, Saudia and Gulf Air.

In Europe the TriStar lasted longest with smaller charter and ACMI providers. After the Portuguese EuroAtlantic Airways retired its last TriStar in 2010, the type had disappeared from European civil service.

Where you can still see the TriStar today

The honest answer: hardly any more in flight. For spotters the TriStar is now a museum and archive type. There are still a few options.

Place	Chance	Why
Flight operations with Stargazer	very low	The only airworthy L-1011, special missions for rocket launches
Museums	good	Preserved fuselages and parts, e.g. at the Delta Flight Museum in Atlanta
Storage aprons and desert boneyards	low to medium	A few airframes are still in storage, often hard to access
Photo archives and slides	high	Often the most realistic route for your logbook and type collection

The best-known airworthy aircraft is “Stargazer,” a converted L-1011-100 that Northrop Grumman (formerly Orbital Sciences) uses as a flying launch platform for Pegasus rockets. The rocket hangs under the fuselage and is released at high altitude. Missions are rare and unpredictable – a sighting is more luck than planning.

In addition, parts and airframes are preserved in museums and at display sites, for example in Kansas City, in Trinidad and Tobago or as a dive target in the Red Sea off Aqaba in Jordan. Before you travel for a TriStar, be sure to check whether the example is still there and accessible. How to rate the rarity of such an encounter is explained in the article How rare is my sighting?, and you’ll find more rarities under Spotting rare aircraft.

Photo tips for a TriStar

Whether in a museum or on one of the rare occasions in flight: the TriStar has a particularly elegant line that is worth capturing.

If you want to place historic types better in general, the guide Identifying vintage aircraft in the sky helps. And how codes like L101 are structured is explained in the article ICAO type designators explained.

Common mix-ups and how to rule them out

Conclusion

The L-1011 TriStar is a lesson that good technology alone is not enough. It was technically advanced and valued by many crews, but it came too late, had only one engine to choose from and lost the duel against the DC-10. For spotters it remains a classic with a clear identifying feature and a strong German history with LTU in Düsseldorf. If you are looking for similar classics, the Super Constellation offers another big Lockheed chapter.