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Difficulty: MediumNegative Detail Identification

Hydraulic accumulators in military aircraft store pressurized fluid to dampen pressure surges and provide emergency power if primary engine-driven pumps fail. Most tactical aircraft use nitrogen-charged piston accumulators, where a floating piston physically separates hydraulic fluid from a pre-charged chamber of dry nitrogen gas. Because nitrogen is chemically inert and non-flammable, it eliminates the risk of diesel effect combustion under high-pressure compression. While hydraulic fluid volume varies with system demand, the mass of sealed nitrogen gas remains constant during normal operations. Routine maintenance inspections verify the accumulator's static pre-charge pressure using an external pressure gauge only when the hydraulic system is fully depressurized.

According to the passage, routine maintenance inspections verify the accumulator's static pre-charge pressure while the aircraft hydraulic system operates under full pressure.

Answer: Answer

Answer

False
The statement is false because the passage explicitly notes that maintenance personnel check the static pre-charge pressure only when the hydraulic system is completely depressurized, which contradicts the statement's assertion of testing under full pressure.

Step-by-Step Solution

1
Scan the passage to locate the specific section discussing maintenance procedures and pre-charge pressure verification.
Located the final sentence describing how routine maintenance inspections check static pre-charge pressure.
Direct retrieval of the factual condition is required to evaluate the validity of the statement.
2
Compare the condition specified in the statement with the explicit condition stated in the passage.
The text states testing occurs 'only when the hydraulic system is fully depressurized,' directly contradicting the statement's claim that it occurs under 'full pressure.'
Identifying contradicted details confirms that the statement is factually unsupported by the text.

Key Concept

Negative detail identification requires verifying whether a stated condition is directly contradicted by or missing from the factual statements in the passage.
Estimated Time:1m 0s
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Negative Detail Identification

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