Which of the following items is included in the Abort Start Criteria?

Which of the following items is included in the Abort Start Criteria?

• A. Oil pressure only
• B. No rise in TGT; oil pressure; applicable RPMs within 45 sec; TGT exceeds 851 % TOT; starter drops out before 52%
• C. No rise in TGT; oil pressure; applicable RPMs within 60 sec; TGT exceeds 700 % TOT; starter drops out before 60%
• D. TGT exceeds 900 % TOT

Answer: (B)

Abort Start Criteria are the conditions that tell you when a helicopter engine start must be stopped to protect the engine and accessories. The best answer lists all the key checks that define a safe abort: if there is no rise in turbine gas temperature, if oil pressure doesn’t develop, if the engine does not reach the required RPM within the specified time (45 seconds), if the turbine temperature exceeds the maximum allowed (851 TOT), or if the starter cuts out before reaching the target RPM (52%). Having all of these together ensures you abort promptly when any one sign of a bad start appears. The other options miss one or more of these critical checks, use incorrect time windows or temperature limits, or include an unrealistic threshold, so they don’t match the official abort criteria.

Abort Start Criteria are the conditions that tell you when a helicopter engine start must be stopped to protect the engine and accessories. The best answer lists all the key checks that define a safe abort: if there is no rise in turbine gas temperature, if oil pressure doesn’t develop, if the engine does not reach the required RPM within the specified time (45 seconds), if the turbine temperature exceeds the maximum allowed (851 TOT), or if the starter cuts out before reaching the target RPM (52%). Having all of these together ensures you abort promptly when any one sign of a bad start appears. The other options miss one or more of these critical checks, use incorrect time windows or temperature limits, or include an unrealistic threshold, so they don’t match the official abort criteria.