MH60R Limits (01 FEB 23)

Question 1

Engines are limited by

Answer 1

Ng
Np
TGT
Oil Px
Oil temperature

Question 2

A start cycle is defined as

Answer 2

Starter initiation

Acceleration in Ng

Starter dropout/disengagement

A 60 second delay between start attempts is required any time a starter is aborted, except in emergencies

Question 3

For crossbleed starts, the receiving engine SHALL be at or above XX% Nx prior to advancing PCL to IDLE

Answer 3

24% Ng

Question 4

The start TGT limit is

Answer 4

851*C until idle speed is attained

Question 5

Engine operation with gust lock…

Answer 5

Engaged is prohibited

Question 6

Minimum planned fuel

Answer 6

On landing shall be no less than 600 pounds

Question 7

Operation of the APU in flight shall be limited to _____ operations only.

Acceptable in flight us includes:

Answer 7

Essential

• emergency procedures
• single-engine training
• practice autorotations
• powering the ECS during extreme temperature operations.

Question 8

Turbine Gas Temperature (TGT)

Answer 8

0-810 Continuous // Green
810-851 30 Mins // Yellow
851-878 10 Mins // Red
878-903 2.5 Mins // Red
903-949 12 Seconds //Red
949 MAX // Red

Question 9

Power Turbine Speed (Np)

Answer 9

<96% Avoid // Red

96-105% Continuous // Green (yellow above 101%)

105-117% 20 Seconds // Yellow

117-120% 12 Seconds // Yellow

120% MAX // Red

Caution: during engagement, extended operations in the 20 to 40% and 60 to 75% ranges may cause engine damage

Question 10

Main Rotor Speed (Nr)

Answer 10

<96% Avoid // Red
96-101% Continuous // Green
101-120% Precautionary // Yellow
120% MAX // Red

123% Max for FCF Only // Red
127% Overspeed Latch // Red

Question 11

Dual-Engine Torque (TRQ)
< 80 KIAS

Answer 11

0-120% Continuous // Green

120-144% 10 Seconds // Yellow

144% MAX // Red

Question 12

Dual-Engine Torque (TRQ)
> 80 KIAS

Answer 12

0-106% Continuous // Green

106-127% 10 Seconds // Yellow

127% MAX // Red

Note: Dual Engine Torque Limits apply when both engines are above 65% torque.

Question 13

Single-Engine Torque

Answer 13

0-135% Continuous // Green

135-144% 10 Seconds // Red

144% MAX // Red

Question 14

Gas Generator Speed (Ng)

Answer 14

0-102.2% Continuous // Green

> 102.2-106% 2.5 Mins // Yellow

> 106-107% 12 Seconds // Red

107% MAX // Red

Question 15

Gas Generator Speed (Ng)

Answer 15

0-102.2% Continuous // Green

> 102.2-106% 2.5 Mins // Yellow

> 106-107% 12 Seconds // Red

107% MAX // Red

Question 16

Transmission Temperature (XMSN T)

Answer 16

-50 - 105*C Continuous // Green

105-120*C Precautionary // Yellow

120*C MAX // Red

Question 17

Transmission Pressure (XMSN P)

Answer 17

20 PSI Minimum // Red
20-30 PSI Idle and transient // Yellow

30-65 PSI (45-60 in level flight) Continuous // Green

65-130 PSI Precautionary // Yellow
130 PSI MAX // Red

Question 18

Engine Oil Temperature (ENG OIL T)

Answer 18

-50 - 135C Continuous // Green
135-150C 30 Mins // Yellow
150*C MAX // Red

Question 19

Engine Oil Pressure (ENG OIL P)

Answer 19

22 PSI MINIMUM // Red
22-26 PSI Precautionary // Yellow
26-100 PSI Continuous // Green
100-120 PSI Precautionary // Yellow
120 PSI MAX // Red

Question 20

Engine Start

Answer 20

<16*C
60 Seconds
60 Seconds
60 Seconds
30 Minutes

16-52*C
60 Seconds
30 Minutes

Question 21

Engine Motor (ignition off)

Answer 21

Any Temperature

2 Mins engaged
5 Mins disengaged

2 Mins engaged
30 Mins disengaged

times for motoring are cumulative within a 5-minute period

Question 22

The Transmission is limited by

Answer 22

Nr
Torque
Oil px
Oil temp

Operation is governed by whichever limit is reached first

Question 23

During any operating condition, no maintenance action is required if main transmission oil (px/temp) is in the precautionary range continuously for XX minutes or less.

Answer 23

Temperature

5 minutes or less

Question 24

Prolonged hovering in hot weather, XXF (XXC) may cause main transmission oil temperature to rise into the precautionary range.

Operation in the precautionary range for less than XX minutes during any one flight under this condition is acceptable and ____ maintenance action is required.

Answer 24

86F (30C)

Less than 30 minutes

No maintenance action is required