Dirty Dozen
"Only 30 % of verbal communication is received and understood." Which Dirty Dozen element does this statistic illustrate?
Lack of communication
What percentage of maintenance errors are related to human factors (approx.), according to the FAA?
80 %
Complete: "If you heat ice, it ___."
melts. (Type 0)
What is the ICAO code for Frankfurt Airport?
EDDF
What year did the Berlin Wall fall?
1989
Name the Dirty Dozen factor defined as “not having enough people, equipment, documentation, time, parts, etc., to complete a task.”
Lack of resources
Which major aviation accident was partly caused by miscommunication between pilots and air traffic control, due to ambiguous radio transmissions?
Tenerife runway collision, 1977
Complete: "If I __ (be) late, you'll wait without me."
am. (Type 1)
Which principle explains how pressure differences on an airfoil generate lift?
Bernoulli's principle (combined with Newton’s Third Law).
Which famous painting was stolen from the Louvre in 1911 and recovered two years later?
The Mona Lisa.
Which of the Dirty Dozen refers to when technicians stop checking details because they repeat a task too often?
Complacency
Statistically, what portion of a verbal message is typically received correctly in aviation maintenance communication?
About 30 %
Convert to Type 2: "She doesn't fix it, so it breaks."
"If she didn't fix it, it would break."
What is the function of a transponder in an aircraft?
It communicates the aircraft's identity and altitude to air traffic control radar.
Which ancient city was destroyed in 79 AD by a volcanic eruption and rediscovered in the 18th century?
Pompeii
Which Dirty Dozen factor involves failing to speak up about safety concerns or unclear instructions?
Lack of assertiveness
Which Dirty Dozen factors contributed to the Sundance helicopter crash in 2011, according to the NTSB?
Fatigue and lack of clearly delineated maintenance steps (a form of lack of awareness/resources).
Transform into Type 3: "He didn’t check the gauge, so the engine failed."
"If he had checked the gauge, the engine wouldn't have failed."
What instrument tells a pilot the aircraft’s attitude relative to the horizon?
Attitude indicator (artificial horizon).
What mathematical concept did Indian mathematician Aryabhata describe centuries before it was used in Europe?
The concept of zero.
Explain how "Lack of awareness" differs from "Distraction" as Dirty Dozen factors.
Lack of awareness means not recognizing or understanding the situation's full context (e.g. reading a procedure wrong), while distraction means being interrupted or losing focus on the task at hand.
Describe a real incident where complacency was a contributing factor, and explain why.
The Chalk’s Ocean Airways Flight 101 (2005) crash: complacency led to failure to identify fatigue cracks in the wing structure.
Mixed conditional! Complete: "If the pilot had used the checklist, he ___ (not/be) under stress now."
...he wouldn’t be under stress now.
What was the significance of the QF32 incident involving an Airbus A380 in 2010?
It was a major uncontained engine failure where the crew managed a safe landing, often cited as a textbook example of CRM (Crew Resource Management).
Which chemical element has the atomic number 82 and is known for its high density?
Lead (Pb)