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FAA To Investigate 787 Dreamliner
Dupple sends word from the BBC that the U.S. Federal Aviation Administration will be conducting a safety review of the Boeing 787 Dreamliner after a number of incidents have called the aircraft's hardiness into question. "An electrical fire, a brake problem, a fuel spill and cracks in the cockpit's windshield have affected Dreamliner flights in the past week. ... The Boeing 787 Dreamliner is one of the most advanced aeroplanes ever created. Much of it is made from very strong, light carbon-fibre composite material. However, a spate of technical issues has hurt its image. On Friday, two new problems were found, adding to Boeing's woes." A spokesman for Boeing said they were "absolutely confident in the reliability and performance of the 787," and were cooperating fully with the FAA's investigation. The 787 went into service in 2011, and 50 have been delivered to various airlines since then, with hundreds more on order. Qatar Airways has received five of them, and it has criticized Boeing for manufacturing faults.
The difference is that the 787 is the first aircraft Boeing has attempted to build pre-stuffed fuselage sections off-site for, and assemble them into a completed aircraft at the FAL. Airbus has been doing this since the early 1980s, but Boeing still used their on-site build process for the 777 in the 1990s.
Boeings mistake was in changing the production methodology at the same time as changing the technologies involved - a switch to a higher aluminium content electrical wiring and the differing tolerances of such a move, new ways of grounding, new materials etc etc. suddenly the same assembly workers have to adjust not only their working practices but their skill set as well.
You don't use duct tape, you use speed tape, and it is qualified for these kinds of purposes.
Fuel dump evaporates before it hits the ground.
You seem to be under the impression fires in composite aircraft pose a risk of poisoning or harming passengers.
It's not that simple though. Composites (FRP) are made from a fiber and a resin, which can be thought of like a glue. Most plastics can be used as a resin. On an aircraft, they use many different resins in different places as they are tailored to the local requirements. Also, these plastics are subjected to a number of tests that are used to determine toxicity in a few reasonable ways; most of them concentrate on what happens when we burn the plastic.
Near passengers, they have requirements ensuring the parts are self-extinguishing in a short (1 minute) time frame and have no toxicity in their smoke (The flammability test is UL 94, V0 is a typical requirement; I forget the smoke and toxicity test numbers I've used). So the plastic that holds your luggage above your head is made of a less weight-efficient material because it must meet design requirements focused on passenger safety in the event of a cabin fire. And of course, in the middle of the wing, it doesn't much matter if the smoke from a fire would make a passenger sick--passengers aren't anywhere near there--but fuel is probably nearby, so the design requirements and fail-safe measures for flammability and smoke are different there and in other zones of the aircraft.
In the paper you cited, note that the focus was on emergency response personnel. If as a passenger you're exposed to such an explosion, respiration of the fibers that carry potentially toxic plastics isn't the top concern - if you're inhaling that, I would be wondering what punched a hole in the fuselage and how many people are dead. The respiration and other hazards are a big deal to a ground crew or fire department who would put out non-crash-related fires. But the words in bold, "A bigger issue: When composite burns it releases poisons," are easy to misinterpret as a major passenger safety hazard unique to this aircraft.