When the elevator reached the 22nd floor the engineer found heavy smoke and heat which prevented him from reaching the elevator controls he needed to return to the lobby.
A British Court of Inquiry convened on July 7 that year investigated the crash of Sikorski's Liberator II serial AL 523, but was unable to determine the cause, finding only that it was an accident and "due to jamming of elevator controls", noting that "it has not been possible to determine how the jamming occurred but it has been established that there was no sabotage".
Other necessary changes were the addition of spoiler ailerons and an elevator control boost to improve the aircraft's poor controllability at low speeds.
"So that's like flying an airplane without being able to adjust the elevator control on the tail wing.
Mohsen el-Missiry of the Ministry of Civil Aviation, said pointedly, "Additional work remains to be done, particularly in assessing the design of the Boeing 767 elevator control system".
In it, Amy Meyers, the current director of the center, said she was motivated to create the plan after her arrival in 2002, when two elevator control panels needed replacement.
Fire officials say workers on the roof of the elevator control room, about 150 feet above ground, started the fire when sparks from a welding torch ignited the roof.
The Egyptian Civil Aviation Authority, in a statement distributed here by the public relations agency it hired soon after the crash, said the American investigators had "failed to consider a credible body of evidence supporting multiple failures in the aircraft's elevator control system as the probable cause of the accident".
Tim Weiner (NYT) MIDDLE EAST EGYPT: THEORY ON AIR CRASH The chairman of Egypt Air, Faheem Rayan, urged American aviation officials to investigate possible links between a defect in the design and maintenance of the elevator control system in the Boeing 767 and the crash of an Egypt Air flight off Massachusetts in 1999.
Potential engineering applications (e.g. elevator control) for buildings based on the prediction of building shaking level are also addressed.
The chapter also describes various examples of control systems namely, room temperature control system, aircraft elevator control, computer numerically controlled (CNC) machine tool, and ship autopilot control system.
