physics

Mohawk Airlines Flight 40

Mohawk Airlines Flight 40 is a physics topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Mohawk Airlines Flight 40 rather than just read about it. In short: Mohawk Airlines Flight 40 was a scheduled domestic passenger flight between Syracuse, New York and Washington, DC, with an intermediate stop in Elmira, New York. On June 23, 1967 the BAC One-Eleven suffered a loss of control and crashed, killing all 30 passengers and four crew on board.

Key takeaways

Mohawk Airlines Flight 40 belongs to physics; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Mohawk Airlines Flight 40 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Mohawk Airlines Flight 40 from memory before moving on to harder problems.

Reference excerpt

Mohawk Airlines Flight 40 was a scheduled domestic passenger flight between Syracuse, New York and Washington, DC, with an intermediate stop in Elmira, New York. On June 23, 1967 the BAC One-Eleven suffered a loss of control and crashed, killing all 30 passengers and four crew on board. It was the deadliest disaster in the airline's history. A valve in the auxiliary power unit had suffered a complete failure, spreading fire to the tailplane, causing a loss of pitch control.

Aircraft and crew This particular BAC 1-11 was new, having had its first flight the previous year. Its airframe had accumulated 2,246 hours in total. It was equipped with two model 506-14 Spey engines manufactured by Rolls-Royce. Its registration number was N1116J with the aircraft name Discover America. The captain was 43-year-old Charles E. Bullock, who had logged 13,875 flight hours, including 603 hours on the BAC 1-11. The first officer was 33-year-old Troy E. Rudesill, who had 4,814 flight hours, with 667 of them on the BAC 1-11.

History of flight The aircraft, a BAC 1-11, took off from runway 24 at Elmira Corning Regional Airport at approximately 14:39 EDT. It was cleared to climb to 16,000 feet (4,900 m) five minutes later. Nine minutes after that, several eyewitnesses saw large pieces of the tailplane break away from the aircraft with flames and smoke coming out from the fuselage, as the flight proceeded south from Mansfield, Pennsylvania. The aircraft subsequently lost control and plunged into a heavily wooded area served only by dirt roads. No one on the ground was hurt, but there were no survivors aboard the plane. Thereafter, the air traffic controller at New York Center vectored a Piper Aztec over the area of Flight 40's target disappearance. The pilot of this plane reported observing the burning wreckage of an airplane, which was later identified as Flight 40. The plane gouged a strip through the woods about 100 yards (300 ft; 91 m) wide and 500 yards (1,500 ft; 460 m) long. The tail section was thrown 400 yards (1,200 ft; 370 m) from the impact site of the crash. Some of the witnesses were workmen at a coal strip mine who immediately took a bulldozer and plowed two roads through to the site a mile and a half away. Shortly after the incident, Robert E. Peach, president of Mohawk, demanded an investigation by the Federal Bureau of Investigation. In a telegram to J. Edgar Hoover, director of the F.B.I., Mr. Peach wrote: "Evidence has developed in the course of notification of next of kin of crash victims which leads to strong suggestion of sabotage. Mohawk Airlines formally demands that the F.B.I. investigate the possibility of sabotage." However, Mr. Peach did not make public the nature of the "evidence."

Investigation The National Transportation Safety Board launched a full investigation. The findings of that investigation are as follows: A non-return valve in the auxiliary power unit had suffered a complete failure. This allowed bleed air from the engine to flow through the system in the wrong direction. This air exited at the start of the system at sufficient temperatures to ignite components there. The fire quickly spread to the hydraulics in the aircraft, and moved along the hydraulic lines to the rear of the plane. There, it caused heavy damage to the tail, causing a loss of pitch control which sent the airplane diving into the ground.

Aftermath In July 1967, the National Transportation Safety Board made three safety recommendations to the Federal Aviation Administration, which issued Airworthiness Directive 68-01-01 to prevent heat damage or fire in the airframe plenum of the auxiliary power unit installation. On 23 June 2017, a memorial was erected to honor the victims.

References

External links "Accident description". Aviation Safety Network. National Transportation Safety Board Summary National Transportation Safety Board Aircraft Accident Report - April 18, 1968 Text of Airworthiness Directive 68-1-1, issued as a result of the crash Archived 2007-09-27 at the Wayback Machine A photo of the accident aircraft

Illustrations

Worked examples

Example 1 — a first encounter with Mohawk Airlines Flight 40

Start with the simplest possible case. Write down what Mohawk Airlines Flight 40 claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Mohawk Airlines Flight 40 before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Mohawk Airlines Flight 40 ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Mohawk Airlines Flight 40

In research: Mohawk Airlines Flight 40 appears in physics research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Mohawk Airlines Flight 40 in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Mohawk Airlines Flight 40 is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1967 in Pennsylvania, Airliner accidents and incidents caused by in-flight fires, Airliner accidents and incidents caused by in-flight structural failure, so understanding it makes those chapters shorter.
In everyday life: Look for Mohawk Airlines Flight 40 outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Mohawk Airlines Flight 40 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Mohawk Airlines Flight 40 means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Mohawk Airlines Flight 40 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Mohawk Airlines Flight 40 in simple terms?

Why does Mohawk Airlines Flight 40 matter?

Because it connects several physics ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Mohawk Airlines Flight 40?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Mohawk Airlines Flight 40.