Mh-60S Limits (Chapter 4)

Front 1

TGT Limits

Back 1

0 - 810 C Continuous
810 - 851 C 30 Minutes
851 - 903 C 2.5 Minutes
903 - 949 C 12 Seconds
949 C Maximum

Front 2

Np Limits

Back 2

<96% Avoid
96 - 101% Continuous
101 - 120% 12 Seconds
120% Maximum

Front 3

Nr Limits

Back 3

<96% Avoid
96 - 101% Continuous
101 - 120% 12 Seconds
120% Maximum

Front 4

Nr Overspeed Latch

Back 4

127%
137%
142%

Front 5

Dual Engine TRQ (< 80 kts)

Back 5

0 - 120% Continuous
120 - 144% 10 Seconds
144% Maximum

Front 6

Dual Engine TRQ (> 80 kts)

Back 6

0 - 106% Continuous
106 - 127% 10 Seconds
127% Maximum

Front 7

Single Engine TRQ

Back 7

0 - 135% Continuous
135 - 144% 10 Seconds
144% Maximum

Front 8

Ng Limits

Back 8

0 - 98% Continuous
98 - 102% 30 Minutes
102 - 105% 12 Seconds
105% Maximum

Front 9

Transmission Oil Temp Limits

Back 9

-50 - 105C Continuous
105 - 120C Precautionary
120C Maximum

Front 10

Transmission Oil Pressure Limits

Back 10

<20 psi Minimum
20 - 30 psi Idle/transient
30 - 65 psi Continuous
(45 - 60 psi in level flight)
65 - 130 psi Precautionary
130 psi Maximum

Front 11

Engine Oil Temp Limits

Back 11

-50 - 135C Continuous
>135 - 150C 30 Minutes
>150C Maximum

Front 12

Engine Oil Pressure Limits

Back 12

0 - 22 psi Minimum
22 - 26 psi Precautionary
26 - 100 psi Normal
100 - 120 psi Precautionary
120 psi Maximum

(Normal idle: 22 - 55 psi)

Front 13

Engine Start (< XX C)

Back 13

< 16 C

After 1st 3 cycles: 60 second wait
After 4th cycle: 30 minute wait

Front 14

Engine Start (XX - YY C)

Back 14

First cycle: 60 second wait
Second cycle: 30 minute wait

Front 15

Engine Motor Limitations

Back 15

2 minutes on, 5 minutes off
2 minutes on, 30 minutes off

Front 16

Crossbleed start requirements

Back 16

Donor Ng > 94%
Nr 100%

Caution: Donor Ng of < 94% may result in hot start

Front 17

Minimum Planned Fuel on Landing

Back 17

225 lbs per main tank

With fuel less than 300 lbs per main tank, maintain balanced flight at AOB's > 30 degrees

Front 18

Wind limits for rotor engagement

Back 18

45 knots from any direction

Front 19

Vne

Back 19

180 kts

Front 20

Vauto (Max)

Back 20

100 kts

Front 21

Max airspeed for sideward/rearward flight

Back 21

45 knots
(35 with external load)

Front 22

Max Airspeed: Two SAS inoperative in IMC

Back 22

125 kts

Front 23

Max Airspeed: SAS/BOOST off

Back 23

140 kts

Front 24

Max Airspeed: Either PRI SERVO PRESS caution

Back 24

125 kts

Front 25

Max Airspeed: Cabin doors in transition

Back 25

100 kts

Front 26

Max Airspeed: Cabin doors open

Back 26

120 kts

Caution: Soundproofing must be properly secured when flight is conducted with doors opened.

Front 27

Max Airspeed: Gunner windows in transition

Back 27

170 kts

Front 28

Max Airspeed: Landing light in transition

Back 28

130 kts

Front 29

Max Airspeed: Searchlight in transition

Back 29

100 kts

Front 30

Max Airspeed: Aircraft GW > 22,000 lbs with an external load

Back 30

120 kts

Front 31

Max descent rate with load on the rescue hoist

Back 31

1000 fpm

Front 32

AOB limitation: normal flight

Back 32

45 degrees

Front 33

AOB limitation: Above 10,000 feet DA

Back 33

30 degrees

Front 34

AOB limitation: Either PRI SERVO PRESS caution

Back 34

30 degrees

Front 35

AOB limitation: SAS/BOOST OFF

Back 35

30 degrees

Front 36

Max operating DA

Back 36

13,000 feet

Front 37

Prohibited maneuvers

Back 37

1) Aerobatic flight
2) Hovering turns in excess of 30 degrees/sec
3) Practice full autorotations
4) Intentional approaches into retreating blade stall

Front 38

Rotor brake operating limitations

Back 38

76% max Nr for engagement
30 - 50% Nr for normal engagement
180 psi limitation for normal stops

Front 39

Blade/Pylon/Stab fold/spread winds

Back 39

45 knots from any direction

Front 40

Blade spread/fold cycle cooldown

Back 40

10 minutes after three fold/spread cycles

Front 41

Max rate of descent, level terrain

Back 41

720 fpm

Front 42

Max rate of descent, sloped terrain

Back 42

360 fpm

Front 43

Running takeoff/landing
- Tailwheel locked
- Tailwheel unlocked

Back 43

60 kgs
20 kgs

Front 44

Max braking speed

Back 44

35 kgs

Front 45

Slope landing limitations

Back 45

6 degrees downslope
9 degrees upslope
12 degrees cross slope

Front 46

Max gross weight, internal

Back 46

22,500 lbs

Front 47

Max gross weight, external load

Back 47

23,500 lbs

Front 48

Max internal weight
Max weight for palletized cargo
Max weight for single pallet

Back 48

5,500 lbs
4,733 lbs
3,000 lbs

Front 49

Max external load, cargo hook

Back 49

8,000 lbs

Front 50

Max external load, rescue hoist

Back 50

600 lbs

Front 51

Minimum Equipment for IMC Flight

Back 51

Both FD's
Both MD's
Both EGI's (2 attitude, 1 heading)
One ADC (on both FD's)
Both FD slip/skid indicators
Wet compass with cal card
Rad Alt (on both FD's)
Both FMC's
Digital clock (FD or backup)
Pitot Heat
All backup instruments
Instrument, navigation, and cockpit lights
One V/UHF Radio
ICS (all stations)
Transponder
TACAN or VOR
SAS 2, trim, and autopilot
LAWS (over water)
Altitude hold (over water)

Front 52

Minimum equipment for night overwater flight

Back 52

LAWS
Altitude hold

Front 53

Minimum equipment for flights into known icing

Back 53

All installed Anti/deice equipment

Front 54

Temperature limits for operation

Back 54

-40C to 60C

Front 55

Backup Hydraulic Pump Limitations

Back 55

33-38C - 24 on, 72 off
39-60C - 16 on, 48 off
(Rotor static)

Front 56

APU Operating Limitations
(Rotors Not Engaged)

Back 56

51C, continuous

Front 57

APU Operating Limitations
(Rotors Turning)

Back 57

43C - Continuous
43-60C - 30 minutes