EPs & Limits

Question 1

Any time an operational limit is exceeded, an appropri-ate entry shall be made on

Answer 1

DA Form 2408-13-1

Question 2

The minimum crew required to fly the helicopter is

Answer 2

Two pilots

Question 3

________markings indicatethelimitaboveorbelowwhichcontinuedopera-tionislikelytocausedamageorshortencomponentlife.

________markings indicate the safe or normal range of operation.

________ markings indicate the range when special attention should be given to the operation covered by the instrument.

Answer 3

Red

Green

Yellow

Question 4

During an auto A speed increase of one engine from ___ reference to _____ maximum can be exceeded. During power recovery, it is normal for the engine operating above ____ RPM to lead the other engine.

Answer 4

100%

103%

100%

Question 5

Maximum wind velocity for rotor start or stop is _______ from any direction.

Answer 5

45 knots

Question 6

Power off (autorotation) rotor speeds up to ____ RPM R are authorized for use by maintenance test flight pilots during auto rotational RPM checks.

Answer 6

120%

Question 7

Oil pressure should remain ______ during steady state forward flight or in level hover. Momentary fluctuations in oil pressure may occur during ______________ (i.e. hovering in gusty wind conditions), or when flying with pitch attitudes _______. These types of oil pressure fluctuations are _______, even when oil pressure drops into the yellow range (below 30 psi).

Answer 7

Steady

Transient maneuvers

Above +6 degrees

Acceptable

Question 8

Oil pressure should remain steady and should be in the _________ range for the UH- 60L, to ensure that when fluctuations occur, they remain in the acceptable range as defined above. If oil pressure is ______ during steady state forward flight or in a level hover, or if oil pressure is steady but under ___________, make an______________. Sudden pressure drop ________________ without fluctuation requires an entry on DA Form 2408-13-1.

Answer 8

45 to 60 psi

Not steady

Under 45 psi

entry on DA Form 2408-13-1

more than 10 psi

Question 9

Fuel Quantity

Normal -
Precautionary -

Answer 9

Normal - 200 - 1500 LBS

Precautionary - 0 - 200

Question 10

Main Transmission Oil Temperature

Precautionary -
Continuous -

Answer 10

Precautionary : 105 - 140 degree C

Continuous : -50 - 105

Question 11

Main transmission oil pressure

Precautionary:
Continuous:
Idle and transient:

Answer 11

Precautionary: 65-130 psi
Continuous: 30-65 psi
Idle and transient: 20-30 psi

Make note in -13 if below 45 psi during fly

Question 12

Engine oil temperature

30 minute limit:
Continuous:

Answer 12

30 minute limit: 135-150 degree C

Continuous: -50 - 135

Question 13

Engine oil pressure

5-minute limit:
Normal operation:
Idle:

Answer 13

5-minute limit: 100- 120 psi
Normal operation: 26 - 100 psi
Idle: 22-26 psi

Question 14

Turbine gas temperature

12 second transient:
2.5 minute transient:
(Contingency power)
Start abort limit:
10 minute limit:
30 minute limit:
Normal:

Answer 14

12 second transient: 903 - 949 degrees
2.5 minute transient: 878 - 903 
(Contingency power)
Start abort limit: 851
10 minute limit: 851 - 878
30 minute limit: 810 - 851
Normal: 0 - 810

Question 15

Engine Ng

12 second transient:
30 minute limit:
Continuous:

Answer 15

12 second transient: 102-105%
30 minute limit: 99-102%
Continuous: 0-99%

Question 16

Main rotor over speed

*

• *
• **

Answer 16

• : 127%
• *: 137%
• **: 142%

Question 17

Engine % RPM 1-2

12 second transient
Transient
Continuous
Transient

Answer 17

12 second transient: 105%-107%
Transient: 101%-105%
Continuous: 95%-101%
Transient: 91%-95%

Avoid operations in the 20%-40% and 60%-90% range except during start ni shutdown

Question 18

Main rotor % RPM R

Power on

Transient:
Continuous:
Transient:

Power off

Maximum:
Transient:
Normal:

Answer 18

Power on

Transient: 101%-107%
Continuous: 95%-101%
Transient: 91%-95%

Power off

Maximum: 110%
Transient: 105%-110%
Normal: 90%-105%

Question 19

Engine % TRQ

10 second transient
Dual engine

Above 80 kias
80 kias and below

Single engine

Continuous
Single engine

Dual engine
Above 80 kias
80 kias or below

Answer 19

10 second transient
Dual engine

Above 80 kias: 100%-144%
80 kias and below: 120%-144%

Single engine: 135%-144%

Continuous
Single engine: 0%-135%

Dual engine
Above 80 kias: 0%-100%
80 kias or below: 0%-120%

Question 20

The limitations which are presented in Figure5-2, present ______________, regardless of atmospheric conditions

Answer 20

Absolute limitations

Question 21

Transient % RPM 1 or 2 operation in yellow range (101% to 105%) is ________________ as good operating practice. However,no __________________ is incurred by operation within this range. Momentary transients above ________ are authorized for use by maintenance test pilots during autorotational rpm checks

Answer 21

Not recommended
Damage to either engine or drive train
107% RPM 1 or 2

Question 22

A starting cycle is the interval from_____________________________. The _______ delay between start attempts applies when the first attempt is aborted for any reason, and it applies regardless of the duration of the first attempt. If motoring is required for an emergency, the 60-second delay __________apply.

Answer 22

Start initiation and acceleration of the compressor, from zero rpm to starter drop out

60 second

Does not

Question 23

At ambient temperatures of 15°C (59°F) and below:

At ambient temperatures above 15° up to 52°C (59° up to 126°F):

Answer 23

At ambient temperatures of 15°C (59°F) and below: two consecutive start cycles may be made, followed by a 3-minute rest period, followed by two additional consecutive start cycles. A 30-minute rest period is then required before any additional starts.

At ambient temperatures above 15° up to 52°C (59° up to 126°F): two consecutive start cycles may be made. A 30-minute rest period is then required before any additional start cycles.

Question 24

The minimum ground air source(pneumatic) required to start the helicopter engines is_________________. The maximum ground-air source to be applied to the helicopter is _______________, measured at the external air connect or on the fuselage.

Answer 24

40 psi Gand 30 ppm at 149 degrees C

50 psi at 249 degrees C

Question 25

Crossbleed starts shall not be attempted unless the____________________ does not appear, and operating engine must be at ____________________ and rotor speed at _________________.

Answer 25

Crossbleed starts shall not be attempted unless the #1 ENG ANTI-ICE ON or #2 ENG ANTI-ICE ON advisory does not appear, and operating engine must be at 90% Ng SPEED or above and rotor speed at 100% RPM R.

Question 26

Engine overspeed check in flight is ___________. Engine overspeed checks, on the ground, are authorized by designated _____________________ only.

Answer 26

Engine overspeed check in flight is prohibited. Engine overspeed checks, on the ground, are authorized by designated maintenance personnel only.

Question 27

UH 60L max weight is

Answer 27

22,000 lbs

Question 28

External lift missions above 22,000 pounds can only be flown with cargo hook loads above ____________ and up to _________.

Answer 28

External lift missions above 22,000 pounds can only be flown with cargo hook loads above 8,000 pounds and up to 9,000 pounds.

Question 29

Maximum weight is further limited by cargo floor maximum capacity of __________ per square foot

Answer 29

Maximum weight is further limited by cargo floor maximum capacity of 300 pounds per square foot

Question 30

Maximum capacity for each storage compartments is ____________

Answer 30

Maximum capacity for each storage compartments is 125 pounds.

Question 31

The four cabin ceiling tie down fittings have a limited load capability of ________ pounds.

Answer 31

The four cabin ceiling tie down fittings have a limited load capability of 4,000 pounds.