(Refer to Figure 70.) Over the bay just south-east of the word 'piers', a sector of the Oakland Class C is labeled with a magenta T over 15. What does the T indicate?
- AThe sector is a Terminal Radar Service Area rather than Class C airspace
- BThe Class C in that sector is temporary and active only when announced by NOTAM
- CThe Class C extends up to, but not including, the floor of the overlying Class B airspace
Show answer and explanation
Correct answer: C. The Class C extends up to, but not including, the floor of the overlying Class B airspace
Class C sector altitudes are shown in magenta as ceiling over floor. A ceiling of T means the Class C goes up to, but not including, the floor of the overlying Class B airspace; here the floor is 1,500 feet MSL.
- A. Incorrect. TRSAs are shown with screened black lines and black altitude figures; this magenta label is a Class C sector ceiling.
- B. Incorrect. T is a ceiling value, not a note about temporary activation.
- C. Correct. A Class C ceiling value of T means the ceiling is to, but not including, the floor of the overlying Class B airspace.
Marked on Figure 70: Oakland Class C sector T/15 south-east of 'piers'.
FAA Chart Users' Guide (Aeronautical Chart User's Guide), complete, VFR Terms and Symbols, Controlled Airspace A ceiling value of “T” indicates the ceiling is to, but not including, the floor of the overlying Class B airspace.
FAA Chart Users' Guide (Aeronautical Chart User's Guide), complete, VFR Terms and Symbols, Controlled Airspace The MSL ceiling and floor altitudes of each sector are shown in solid magenta figures with the last two zeros eliminated.