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Questions and Answers
What is the primary purpose of tank ventilation fans and exhaust hoses?
What is the primary purpose of tank ventilation fans and exhaust hoses?
- To increase the fuel tank capacity
- To cool the fuel inside the tank
- To facilitate manual tank maintenance
- To transport fuel vapors out of the aircraft tank (correct)
Which category of tank allows access only by head and shoulders?
Which category of tank allows access only by head and shoulders?
- Category 1 (correct)
- Category 3
- Category 4
- Category 2
What is a requirement for maintenance inside a fuel tank for safety reasons?
What is a requirement for maintenance inside a fuel tank for safety reasons?
- At least two people must be present (correct)
- Maintenance can be done at any time of day
- Only trained technicians are allowed
- Only one person is needed
Which category of tank has no direct external access door but allows for internal openings?
Which category of tank has no direct external access door but allows for internal openings?
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What feature differentiates a category 2 tank from a category 1 tank?
What feature differentiates a category 2 tank from a category 1 tank?
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Study Notes
Tank Ventilation
- Adequate ventilation is essential for a health safe tank.
- Ventilation fans and exhaust hoses remove fuel vapors from the aircraft tank.
Tank Access Categories
- Category 1: Direct access door, but limited entry (head and shoulders only).
- Category 2: Direct access door with sufficient width for full body access.
- Category 3: No direct external access door, but internal openings allow full entry and rescue.
Safety Requirements
- Two-person rule: At least two people are required for maintenance inside a fuel tank.
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