When estimating wind using drift and heading corrections, what additional check can improve confidence in your estimate?

• A. Verify with landmarks or known references if available.
• B. Rely solely on the initial drift estimate.
• C. Use only compass readings.
• D. Ignore external references.

Answer: (C)

When you estimate wind from drift and heading corrections, you gain confidence by verifying your calculated ground track against visible ground references. If you can compare your estimated path with landmarks or known features (such as roads, rivers, coastlines, or distinctive terrain) and the observed movement matches what your heading and drift would produce, your wind estimate is more reliable. This external check helps catch discrepancies caused by instrument error, misread drift, or gusty conditions.

Relying only on compass readings can mislead you because the compass shows heading, not how the airplane is actually moving over the ground. It won’t confirm that your drift correction matches reality, and instrument errors or magnetic variation can skew your sense of movement. Ignoring external references removes an important cross-check, making your wind estimate less robust.