The term doghouse refers to what?

• A. A weather radar anomaly display.
• B. The airplane’s doghouse seating area.
• C. A turn coordinator containing a bubble and marks.
• D. A turn-and-slip indicator dial mark in the shape of a doghouse.

Answer: (D)

Understanding instrument markings on the turn-and-slip indicator is key. The doghouse is a fixed mark on the instrument’s dial that looks like a small house. It provides a quick reference for a standard-rate turn (about 3 degrees per second). When the miniature airplane symbol aligns with this doghouse mark, you’re in a standard-rate turn. The doghouse is not the whole instrument or a bubble; it’s the specific dial mark used for this reference. The other options describe unrelated items or broader features of the instrument, but they don’t identify this particular dial mark.