EMILLYCHARLOTTE 2024/2025 ACADEMIC YAER ©2024 EMILLYCHARLOTTE. ALL RIGHTS RESERVED
FIRST PUBLISH SEPTEMBER 2024
NATOPS Limits Exam Questions and
Answers |100% Pass
Takeoff/Max Torque - Answer✔✔-100% Max
IDLE Torque - Answer✔✔-1-10% (ground)
(Note: Allowable torque range with Np stabilized and PCL at idle).
Transient Torque - Answer✔✔-132% Max (20 sec)
(Note: 132% is materials limit above which engine damage may occur. Torque above 102% is indicative of
a systems malfunction).
Takeoff/Max ITT - Answer✔✔-820 Max
Idle ITT - Answer✔✔-750 Max
Start ITT - Answer✔✔-871 - 1000 (5 sec)
Transient ITT - Answer✔✔-821-870 (20 sec)
Takeoff/Max N1 - Answer✔✔-104% Max
Idle N1 - Answer✔✔-60-61 (Ground)
67 Min (Flight)
Transient N1 - Answer✔✔-104% Max
Page 1/6
, EMILLYCHARLOTTE 2024/2025 ACADEMIC YAER ©2024 EMILLYCHARLOTTE. ALL RIGHTS RESERVED
FIRST PUBLISH SEPTEMBER 2024
Takeoff/Max Np (Avoid stabilized ground operations from 62 to 80% Np) - Answer✔✔-100 % Max
(Note: With the PMU off, it is acceptable to have a max of 100 +/- 2%).
Idle Np - Answer✔✔-46 to 50% (Ground)
Transient Np - Answer✔✔-110 (20 sec)
(Note: Permissible at any power setting for completion of in flight emergency).
Takeoff/Max Oil Pressure - Answer✔✔-90 - 120 psi
(Note: Normal oil pressure during steady state is 90-120, oil pressure below 90 psi at flight idle or above
is indicative of an oil system malfunction).
Idle Oil Pressure - Answer✔✔-90 Minimum
Start Oil Pressure - Answer✔✔-200 Max
Transient Oil Pressure - Answer✔✔-40 - 130 psi
(Note: Only acceptable during aerobatics or during spins, and 15-40 psi for 5 sec with the PCL at idle).
Oil Temp Takeoff/Max - Answer✔✔-10 to 105 C
Oil Temp Idle - Answer✔✔--40 to 105 (Ground)
10 to 105 (Flight)
106 to 110
(Note: Acceptable for ground ops at or below 20% torque).
Oil Temp Start - Answer✔✔--40 Min
Page 2/6
FIRST PUBLISH SEPTEMBER 2024
NATOPS Limits Exam Questions and
Answers |100% Pass
Takeoff/Max Torque - Answer✔✔-100% Max
IDLE Torque - Answer✔✔-1-10% (ground)
(Note: Allowable torque range with Np stabilized and PCL at idle).
Transient Torque - Answer✔✔-132% Max (20 sec)
(Note: 132% is materials limit above which engine damage may occur. Torque above 102% is indicative of
a systems malfunction).
Takeoff/Max ITT - Answer✔✔-820 Max
Idle ITT - Answer✔✔-750 Max
Start ITT - Answer✔✔-871 - 1000 (5 sec)
Transient ITT - Answer✔✔-821-870 (20 sec)
Takeoff/Max N1 - Answer✔✔-104% Max
Idle N1 - Answer✔✔-60-61 (Ground)
67 Min (Flight)
Transient N1 - Answer✔✔-104% Max
Page 1/6
, EMILLYCHARLOTTE 2024/2025 ACADEMIC YAER ©2024 EMILLYCHARLOTTE. ALL RIGHTS RESERVED
FIRST PUBLISH SEPTEMBER 2024
Takeoff/Max Np (Avoid stabilized ground operations from 62 to 80% Np) - Answer✔✔-100 % Max
(Note: With the PMU off, it is acceptable to have a max of 100 +/- 2%).
Idle Np - Answer✔✔-46 to 50% (Ground)
Transient Np - Answer✔✔-110 (20 sec)
(Note: Permissible at any power setting for completion of in flight emergency).
Takeoff/Max Oil Pressure - Answer✔✔-90 - 120 psi
(Note: Normal oil pressure during steady state is 90-120, oil pressure below 90 psi at flight idle or above
is indicative of an oil system malfunction).
Idle Oil Pressure - Answer✔✔-90 Minimum
Start Oil Pressure - Answer✔✔-200 Max
Transient Oil Pressure - Answer✔✔-40 - 130 psi
(Note: Only acceptable during aerobatics or during spins, and 15-40 psi for 5 sec with the PCL at idle).
Oil Temp Takeoff/Max - Answer✔✔-10 to 105 C
Oil Temp Idle - Answer✔✔--40 to 105 (Ground)
10 to 105 (Flight)
106 to 110
(Note: Acceptable for ground ops at or below 20% torque).
Oil Temp Start - Answer✔✔--40 Min
Page 2/6
