Flight Engineer
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A flight engineer (FE), also sometimes called an air engineer, is the member of an
aircraft An aircraft is a vehicle that is able to fly by gaining support from the air. It counters the force of gravity by using either static lift or by using the dynamic lift of an airfoil, or in a few cases the downward thrust from jet engines ...
's
flight crew Aircrew, also called flight crew, are personnel who operate an aircraft while in flight. The composition of a flight's crew depends on the type of aircraft, plus the flight's duration and purpose. Commercial aviation Flight deck positions ...
who monitors and operates its complex
aircraft systems Aircraft systems are those required to operate an aircraft efficiently and safely. Their complexity varies with the type of aircraft. Aircraft software systems Aircraft software systems control, manage, and apply the subsystems that are engaged ...
. In the early era of aviation, the position was sometimes referred to as the "air mechanic". Flight engineers can still be found on some larger
fixed-wing A fixed-wing aircraft is a heavier-than-air flying machine, such as an airplane, which is capable of flight using wings that generate lift caused by the aircraft's forward airspeed and the shape of the wings. Fixed-wing aircraft are distinct ...
airplane An airplane or aeroplane (informally plane) is a fixed-wing aircraft that is propelled forward by thrust from a jet engine, propeller, or rocket engine. Airplanes come in a variety of sizes, shapes, and wing configurations. The broad spe ...
s and
helicopter A helicopter is a type of rotorcraft in which lift and thrust are supplied by horizontally spinning rotors. This allows the helicopter to take off and land vertically, to hover, and to fly forward, backward and laterally. These attributes ...
s. A similar crew position exists on some
spacecraft A spacecraft is a vehicle or machine designed to fly in outer space. A type of artificial satellite, spacecraft are used for a variety of purposes, including communications, Earth observation, meteorology, navigation, space colonization, p ...
. In most modern aircraft, their complex systems are both monitored and adjusted by electronic
microprocessor A microprocessor is a computer processor where the data processing logic and control is included on a single integrated circuit, or a small number of integrated circuits. The microprocessor contains the arithmetic, logic, and control circu ...
s and
computer A computer is a machine that can be programmed to Execution (computing), carry out sequences of arithmetic or logical operations (computation) automatically. Modern digital electronic computers can perform generic sets of operations known as C ...
s, resulting in the elimination of the flight engineer's position. In earlier days, most larger aircraft were designed and built with a flight engineer's position. For U.S. civilian aircraft that require a flight engineer as part of the crew, the FE must possess an FAA Flight Engineer Certificate with reciprocating, turboprop, or turbojet ratings appropriate to the aircraft. Whereas the four-engine Douglas DC-4 did not require an FE, the FAA type certificates of subsequent four-engine reciprocating engine airplanes (Boeing 307 and 377, DC-6, DC-7, Constellation) and early three- and four-engine jets (Boeing 707, 727, early 747, DC-8, DC-10, L-1011) required flight engineers. Smaller
twinjet A twinjet or twin-engine jet is a jet aircraft powered by two engines. A twinjet is able to fly well enough to land with a single working engine, making it safer than a single-engine aircraft in the event of failure of an engine. Fuel efficien ...
s (DC-9, 737) were never complex enough to require a flight engineer, while later large two, three, and four-engine jets (Airbus A300, MD-11, 747-400, and later) were designed with sufficient automation to eliminate the position.


History

In order to dedicate a person to monitor an aircraft's engines and its other critical flight systems, the position of "flight engineer" (FE) was created. The FE did not actually fly the airplane; instead, the FE's position had a specialized control panel allowing for the monitoring and control of various aircraft systems. The FE is therefore an integrated member of the flight deck crew who works in close coordination with the two pilots during all phases of flight. Traditionally, the FE station has been usually placed on the main flight deck just aft of the pilot and copilot, and close to the
navigator A navigator is the person on board a ship or aircraft responsible for its navigation.Grierson, MikeAviation History—Demise of the Flight Navigator FrancoFlyers.org website, October 14, 2008. Retrieved August 31, 2014. The navigator's primar ...
. Earlier referred to as a "flight mechanic" on the four-engine commercial
seaplane A seaplane is a powered fixed-wing aircraft capable of takeoff, taking off and water landing, landing (alighting) on water.Gunston, "The Cambridge Aerospace Dictionary", 2009. Seaplanes are usually divided into two categories based on their tec ...
s like the
Sikorsky S-42 The Sikorsky S-42 was a commercial flying boat designed and built by Sikorsky Aircraft to meet requirements for a long-range flying boat laid out by Pan American World Airways (Pan Am) in 1931. The innovative design included wing flaps, variabl ...
,
Martin M-130 The Martin M-130 was a commercial flying boat designed and built in 1935 by the Glenn L. Martin Company in Baltimore, Maryland, for Pan American Airways. Three were built: the '' China Clipper'', the ''Philippine Clipper'' and the '' Hawaii Cli ...
and the
Boeing 314 Clipper The Boeing 314 Clipper was an American long-range flying boat produced by Boeing from 1938 to 1941. One of the largest aircraft of its time, it had the range to cross the Atlantic and Pacific oceans. For its wing, Boeing re-used the design fro ...
, the FE's role was referred to as an "engineer" (much like a ship's engineer) on the first very large flying boat, the
Dornier Do X The Dornier Do X was the largest, heaviest, and most powerful flying boat in the world when it was produced by the Dornier company of Germany in 1929. First conceived by Claude Dornier in 1924, planning started in late 1925 and after over 240 ...
. On the Do X the FE operated a large and complex engineering station similar to later large transport aircraft to monitor the twelve engines. The first US military aircraft to include a FE was the
Consolidated PBY The Consolidated PBY Catalina is a flying boat and amphibious aircraft that was produced in the 1930s and 1940s. In Canadian service it was known as the Canso. It was one of the most widely used seaplanes of World War II. Catalinas served wit ...
which was introduced into naval service in 1936. The FE panel was located in the pylon between the fuselage and the wing. The FE did not have ignition, throttle and propeller controls, thus a person in the cockpit was also required to start the engines. During the war the
Avro Lancaster The Avro Lancaster is a British Second World War heavy bomber. It was designed and manufactured by Avro as a contemporary of the Handley Page Halifax, both bombers having been developed to the same specification, as well as the Short Stirlin ...
and
Handley Page Halifax The Handley Page Halifax is a British Royal Air Force (RAF) four-engined heavy bomber of the Second World War. It was developed by Handley Page to the same specification as the contemporary twin-engine Avro Manchester. The Halifax has its or ...
bomber A bomber is a military combat aircraft designed to attack ground and naval targets by dropping air-to-ground weaponry (such as bombs), launching aerial torpedo, torpedoes, or deploying air-launched cruise missiles. The first use of bombs dropped ...
s employed FEs, as these large aircraft employed only a single pilot. The first Allied military operation during the Second World War involving FEs occurred in February 1941 with a Short Stirling; it was the first four-engined bomber-raid of the war by the
RAF The Royal Air Force (RAF) is the United Kingdom's air and space force. It was formed towards the end of the First World War on 1 April 1918, becoming the first independent air force in the world, by regrouping the Royal Flying Corps (RFC) and ...
.


Duties

The flight engineer ("air engineer" in the Royal Air Force) is primarily concerned with the operation and monitoring of all aircraft systems,Cox, John
Ask the Captain: What does the flight engineer do?
''
USA Today ''USA Today'' (stylized in all uppercase) is an American daily middle-market newspaper and news broadcasting company. Founded by Al Neuharth on September 15, 1982, the newspaper operates from Gannett's corporate headquarters in Tysons, Virgini ...
'', March 23, 2014. Retrieved August 14, 2014.
and is required to diagnose, and where possible rectify or eliminate, any faults that may arise. On most multi-engine airplanes, the FE sets and adjusts engine power during takeoff, climb, cruise, go-arounds, or at any time the pilot flying requests a specific power setting to be set during the approach phase. The FE sets and monitors major systems, including fuel, pressurization and air conditioning, hydraulic, electrics (engine driven generators,
auxiliary power unit An auxiliary power unit (APU) is a device on a vehicle that provides energy for functions other than propulsion. They are commonly found on large aircraft and naval ships as well as some large land vehicles. Aircraft APUs generally produce 115& ...
s), gas turbine compressor/air turbine motor (APU, GTC, ATM), ice and rain protection (engine and nacelle anti-ice, window heat, probe heater), oxygen, fire and overheat protection of all systems, liquid cooling system, draw through cooling system, forced air cooling system, and powered flying controls. FEs are also responsible for preflight and postflight aircraft inspections, and ensuring that the weight and balance of the aircraft is correctly calculated to ensure the
centre of gravity In physics, the center of mass of a distribution of mass in space (sometimes referred to as the balance point) is the unique point where the weighted relative position of the distributed mass sums to zero. This is the point to which a force ma ...
is within limits. On airplanes where the FE's station is located on the same flight deck just aft of the two pilots (all western three- and four-man deck airplanes), they also monitor an aircraft's flight path, speed, and altitude. A significant portion of their time is spent cross checking pilot selections. The FE is the systems expert of the airplane with an extensive mechanical and technical knowledge of aircraft systems and aircraft performance.Eldridge, Andrea
Confessions of a Flight Engineer: Flashlights, timers, and breath mints required
'' Air & Space Smithsonian magazine'', November 2011.
On some military airplanes (
Lockheed C-5 Galaxy The Lockheed C-5 Galaxy is a large military transport aircraft designed and built by Lockheed, and now maintained and upgraded by its successor, Lockheed Martin. It provides the United States Air Force (USAF) with a heavy intercontinental-rang ...
,
Boeing E-3 Sentry The Boeing E-3 Sentry is an American airborne early warning and control (AEW&C) aircraft developed by Boeing. E-3s are commonly known as AWACS (Airborne Warning and Control System). Derived from the Boeing 707 airliner, it provides all-wea ...
,
McDonnell Douglas KC-10 The McDonnell Douglas KC-10 Extender is an American aerial refueling tanker aircraft operated by the United States Air Force (USAF). A military version of the three-engine DC-10 airliner, the KC-10 was developed from the Advanced Tanker Cargo A ...
) the FE sits behind the co-pilot in the
cockpit A cockpit or flight deck is the area, usually near the front of an aircraft or spacecraft, from which a Pilot in command, pilot controls the aircraft. The cockpit of an aircraft contains flight instruments on an instrument panel, and the ...
, facing outboard to operate a panel of switches, gauges and indicators or forward to operate throttles, lighting controls, flight controls. On the
Tupolev Tu-134 The Tupolev Tu-134 (NATO reporting name: Crusty) is a twin-engined, narrow-body jet airliner built in the Soviet Union for short and medium-haul routes from 1966 to 1989. The original version featured a glazed-nose design and, like certain ot ...
the FE sits in the nose of the aircraft. On other western military airplanes, such as on the
Lockheed P-3 Orion The Lockheed P-3 Orion is a four-engined, turboprop anti-submarine and maritime surveillance aircraft developed for the United States Navy and introduced in the 1960s. Lockheed based it on the L-188 Electra commercial airliner.takeoff Takeoff is the phase of flight in which an aerospace vehicle leaves the ground and becomes airborne. For aircraft traveling vertically, this is known as liftoff. For aircraft that take off horizontally, this usually involves starting with a t ...
and
landing Landing is the last part of a flight, where a flying animal, aircraft, or spacecraft returns to the ground. When the flying object returns to water, the process is called alighting, although it is commonly called "landing", "touchdown" or ...
data. The FE's seat on modern aircraft has a complete range of motion (side to side, forward to aft, swivel, up and down) to accommodate the many positions required to monitor and operate the aircraft systems. The basic philosophy of a three-person flight deck in many flight operations, should an abnormality or emergency arise, is for the captain to hand over the actual flying of the aircraft to the first officer (co-pilot). The captain and FE together review and carry out the necessary actions required to contain and rectify the problem. This spreads the workload and ensures a system of cross-checking which maximizes safety. The captain is the manager and decision maker (pilot not flying, PNF), the first officer, or co-pilot, is the actual flier of the aircraft (pilot flying, PF), and the FE reads the check-lists and executes actions required under the auspices of the captain. There can be occasions when the roles of the pilots during an emergency are reversed, i.e. the copilot becomes the PNF and the captain becomes the PF; one such example was on the A300 B-Series aircraft when there was a complete loss of generator-supplied electrical power, whereupon the standby instruments that were powered were on the captain's side only, requiring the captain to be PF and the PNF and FE to resolve the issue. During
World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposin ...
many U.S.
bomber A bomber is a military combat aircraft designed to attack ground and naval targets by dropping air-to-ground weaponry (such as bombs), launching aerial torpedo, torpedoes, or deploying air-launched cruise missiles. The first use of bombs dropped ...
aircraft incorporated a flight engineer's position. However, this position also doubled as a gunner, usually operating the upper turret, as was the case of the
Boeing B-17 Flying Fortress The Boeing B-17 Flying Fortress is a four-engined heavy bomber developed in the 1930s for the United States Army Air Corps (USAAC). Relatively fast and high-flying for a bomber of its era, the B-17 was used primarily in the European Theater ...
. On some commercial airliners with a flight engineer, the FE is the third in command, after the captain and first officer.


Regulation

Unlike commercial pilots, the
Federal Aviation Administration The Federal Aviation Administration (FAA) is the largest transportation agency of the U.S. government and regulates all aspects of civil aviation in the country as well as over surrounding international waters. Its powers include air traffic m ...
never set a mandatory retirement age for flight engineers. As a result, some pilots would voluntarily downgrade themselves when turning 60. This policy was the subject of two
U.S. Supreme Court The Supreme Court of the United States (SCOTUS) is the highest court in the federal judiciary of the United States. It has ultimate appellate jurisdiction over all U.S. federal court cases, and over state court cases that involve a point o ...
cases in 1985, when it ruled against
Western Airlines Western Airlines was a major airline based in California, operating in the Western United States including Alaska and Hawaii, and western Canada, as well as to New York City, Boston, Washington, D.C., and Miami and to Mexico City, London and ...
that forced retirement of flight engineers based on the regulations for pilots was a violation of the
Age Discrimination in Employment Act The Age Discrimination in Employment Act of 1967 (ADEA; to ) is a United States labor law that forbids employment discrimination against anyone, at least 40 years of age, in the United States (see ). In 1967, the bill was signed into law by Pr ...
. Earlier in the year it had rejected a policy that prevented pilots from "bumping" flight engineers from their positions upon the former reaching retirement age.


Elimination

Starting in the 1980s, the development of powerful and small
integrated circuit An integrated circuit or monolithic integrated circuit (also referred to as an IC, a chip, or a microchip) is a set of electronic circuits on one small flat piece (or "chip") of semiconductor material, usually silicon. Large numbers of tiny ...
s and other advances in
computer A computer is a machine that can be programmed to Execution (computing), carry out sequences of arithmetic or logical operations (computation) automatically. Modern digital electronic computers can perform generic sets of operations known as C ...
s and digital technology eliminated the need for flight engineers on airliners and many modern military aircraft. On two-pilot flight deck airplanes, sensors and computers monitor and adjust systems automatically. There is no onboard technical expert and third pair of eyes. If a malfunction, abnormality or emergency occurs, it is displayed on an electronic display panel. One pilot does the flying while the other pilot starts reading and executing the quick reference handbook (QRH) to resolve the problem. Modern technological advancements in today's aircraft have reduced the dependence upon human control over systems. The most recent aircraft built with FE stations include military variants of the
Boeing 707 The Boeing 707 is an American, long-range, narrow-body airliner, the first jetliner developed and produced by Boeing Commercial Airplanes. Developed from the Boeing 367-80 prototype first flown in 1954, the initial first flew on December 20, ...
, such as the E-3 Sentry and
E-6 Mercury The Boeing E-6 Mercury (formerly Hermes) is an airborne command post and communications relay based on the Boeing 707. The original E-6A manufactured by Boeing's defense division entered service with the United States Navy in July 1989, repla ...
, both built through 1991, the
Tupolev Tu-154 The Tupolev Tu-154 (russian: Tyполев Ту-154; NATO reporting name: "Careless") is a three-engined, medium-range, narrow-body airliner designed in the mid-1960s and manufactured by Tupolev. A workhorse of Soviet and (subsequently) Russian ...
, the final example of which was delivered in 2013, and the
Scaled Composites Stratolaunch The Scaled Composites Model 351 Stratolaunch or Roc is an aircraft built by Scaled Composites for Stratolaunch Systems to carry air-launch-to-orbit (ALTO) rockets. It was announced in December 2011, rolled out in May 2017, and flew the first ...
whose sole example first flew in 2019. The last major US passenger airline to fly aircraft equipped with a flight engineer's station was
Northwest Airlines Northwest Airlines Corp. (NWA) was a major American airline founded in 1926 and absorbed into Delta Air Lines, Inc. by a merger. The merger, approved on October 29, 2008, made Delta the largest airline in the world until the American Airlines ...
, who retired their final 747-200s from charter service in 2009. The final major cargo operator to employ flight engineers was
FedEx Express FedEx Express, a subsidiary of FedEx Corporation, is a major American cargo airline based in Memphis, Tennessee, United States. As of 2020, it is one of the world's largest airlines in terms of fleet size and freight tons flown. It is the na ...
when they retired the last of their 727s in 2013. Though FedEx continues to operate the DC-10 as of 2022, all of which were originally delivered with a flight engineer's station, all examples remaining in the fleet have been converted to MD-10 standard, which provides for a two-crew cockpit.


See also

*
Flight management system A flight management system (FMS) is a fundamental component of a modern airliner's avionics. An FMS is a specialized computer system that automates a wide variety of in-flight tasks, reducing the workload on the flight crew to the point that mode ...


References

{{Authority control Aviation licenses and certifications Occupations in aviation Engineering occupations