← All explained questions · Aviation Weather Products and Interpretation
Why should a pilot use an official source such as Flight Service or an approved EFB for preflight weather?
Choices
✓ Because official sources include aviation-specific products a consumer app may omitcorrect
Official sources provide TAFs, AIRMETs, SIGMETs, and NOTAMs that consumer apps may leave out.
Because consumer apps are always inaccurate
The issue is completeness of aviation products, not that consumer apps are always wrong.
Because official sources are the only ones showing temperature
Temperature is widely available; the value is aviation-specific completeness.
Because it is free only from consumer apps
Official Flight Service briefings are available at no charge.
Why
Official sources such as 1-800-WX-BRIEF and approved EFB applications draw on authoritative government data and include aviation-specific products like AIRMETs, SIGMETs, TAFs, and NOTAMs that a consumer weather app may not provide.
FAA source: AIM 7-1 (weather sources)browse the reference library →
Original study question written for this course — representative of FAA knowledge-test topics, not an actual current FAA exam question.