After the first engine start, while the MFDs are operating, the CDU TDL pages shall be used as the primary reference for the second engine start.

After the first engine start, while the MFDs are operating, the CDU TDL pages shall be used as the primary reference for the second engine start.

• A. True
• B. False
• C. Not Applicable
• D. Only If MFDs Fail

Answer: (A)

The main idea is that the CDU TDL pages contain the official start criteria and sequencing for the second engine, so they serve as the authoritative reference during the second start even while the MFDs are up and displaying data. After the first engine is running, you rely on the CDU TDL for the required steps, limits, and acceptance criteria (such as ITT limits, N2/N1 behavior, oil pressure rise, and fuel flow targets) to determine when and how to transition to/complete the second start. The MFDs are valuable for real-time monitoring, showing you the actual values, but they do not replace the procedure and limits laid out in the CDU TDL pages. This keeps the process consistent and aligned with the aircraft’s start logic, regardless of MFD status.

The main idea is that the CDU TDL pages contain the official start criteria and sequencing for the second engine, so they serve as the authoritative reference during the second start even while the MFDs are up and displaying data. After the first engine is running, you rely on the CDU TDL for the required steps, limits, and acceptance criteria (such as ITT limits, N2/N1 behavior, oil pressure rise, and fuel flow targets) to determine when and how to transition to/complete the second start. The MFDs are valuable for real-time monitoring, showing you the actual values, but they do not replace the procedure and limits laid out in the CDU TDL pages. This keeps the process consistent and aligned with the aircraft’s start logic, regardless of MFD status.