Examkin

Question

Difficulty: MediumDirect Fact Retrieval

Field maintenance regulations for tactical reconnaissance drones dictate specific inspection criteria for composite propeller leading edges. Technicians must inspect the protective erosion tape for signs of peeling or sealant failure. When peeling extends greater than 0.75 inches from the blade tip, or whenever moisture breaches the underlying polyurethane sealant, maintenance crews must immediately replace the entire propeller assembly. In contrast, shallow surface abrasions smaller than 0.25 inches can be repaired locally with 400-grit abrasive cloth while the aircraft remains in service. Complete ultrasonic structural scans are reserved for aircraft reaching 150 flight hours or those subjected to rough landings.

According to the passage, under which condition must technicians immediately replace the entire propeller assembly?

  1. A
    Surface abrasions on the leading edge measure smaller than 0.25 inches
  2. Moisture breaches the underlying polyurethane sealantAnswer
  3. C
    Erosion tape peeling extends 0.25 inches from the blade tip
  4. D
    The aircraft accumulates 150 flight hours under normal operations

Answer

Moisture breaches the underlying polyurethane sealant
The passage explicitly identifies two distinct conditions that mandate immediate replacement of the propeller assembly: erosion tape peeling greater than 0.75 inches from the tip, or moisture penetrating the underlying polyurethane sealant. The option specifying moisture breaching the sealant directly reflects this stated fact.

Step-by-Step Solution

1
Identify the key question focus
The prompt asks for the explicit condition requiring immediate replacement of the entire propeller assembly.
Direct fact retrieval requires scanning for the specific stated trigger for mandatory part replacement.
2
Scan the passage for the replacement criteria
The text states that replacement is mandatory if tape peeling exceeds 0.75 inches or if moisture breaches the underlying polyurethane sealant.
Direct retrieval relies strictly on verbatim factual conditions provided in the text.
3
Match findings to the correct option
The option specifying moisture penetrating the polyurethane sealant matches the stated condition exactly.
Eliminates distractors presenting non-grounding repairs, mismatched numerical thresholds, or routine scan intervals.

Key Concept

Direct Fact Retrieval
Estimated Time:1m 0s
Rate this question

Topics

Direct Fact Retrieval

More questions from this topic