✈️ Aviation Brief — Issue #62
Weekly insights for student pilots and the instructors who train them.
THIS WEEK'S TOPIC
IA.IV.B — Air Traffic Control Clearances (Instrument Rating ACS)
1. ACS STANDARDS SUMMARY
The ACS for IA.IV.B requires the applicant to demonstrate knowledge of ATC clearances by correctly reading back, interpreting, and complying with an IFR clearance. This includes identifying the clearance limit, route of flight, altitude assignments, departure frequency, and transponder code, while recognizing when to request clarification and how to comply with any amendments.
2. THREE COMMON STUDENT MISTAKES
- Reading back only part of the clearance and omitting critical elements such as “maintain 4,000, expect 8,000 ten minutes after departure” or specific routing restrictions.
- Assuming “as filed” means no changes and failing to copy or confirm the actual departure procedure or route amendment provided by Clearance Delivery.
- Pressing the microphone button too soon or interrupting the controller instead of waiting for the full clearance and then using a standard read-back format.
3. CFI PRO TIP
Have students use a printed CRAFT card (Clearance limit, Route, Altitude, Frequency, Transponder) and copy every clearance in the same left-to-right order every time. This simple habit reduces memory load and makes the subsequent read-back consistent and professional.
4. SAFETY SPOTLIGHT
NTSB reports and ASRS submissions frequently cite altitude deviations and airspace incursions that begin with an incomplete or misunderstood initial clearance. In several cases, pilots accepted a clearance they were unsure about and later climbed or turned incorrectly, creating conflicts with other IFR traffic.
5. DID YOU KNOW
Even after takeoff, ATC can issue a “cancel altitude restriction” or a new routing at any time; the pilot must be ready to copy and read back the change just as carefully as the original clearance received on the ground.
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