Which instrument would you use to determine blade angle when servicing a propeller?

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Study for the Aviation Institute of Maintenance Block 16 Exam. Enhance your knowledge with flashcards and multiple choice questions with hints and explanations. Achieve exam readiness and boost your chances of success!

Multiple Choice

Which instrument would you use to determine blade angle when servicing a propeller?

Explanation:
Measuring blade angle (pitch) requires a device that references the hub plane and the blade’s angle relative to it. A propeller blade station is built for this purpose: it fixtures the blade, aligns it with the hub axis, and uses scales or digital readouts to read the pitch at various points along the blade. This lets you verify the twist and set each blade to the correct specification during servicing. A ruler isn’t able to read angles accurately, an accelerometer measures vibration, and a level checks horizontal/vertical orientation rather than the blade’s pitch in the rotation plane.

Measuring blade angle (pitch) requires a device that references the hub plane and the blade’s angle relative to it. A propeller blade station is built for this purpose: it fixtures the blade, aligns it with the hub axis, and uses scales or digital readouts to read the pitch at various points along the blade. This lets you verify the twist and set each blade to the correct specification during servicing. A ruler isn’t able to read angles accurately, an accelerometer measures vibration, and a level checks horizontal/vertical orientation rather than the blade’s pitch in the rotation plane.

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