60 limits Flashcards by no no

Rotor brake shall not be applied with engine(s) operating and rotor turning except during an

emergency stop. Maximum rotor speed for emergency rotor brake applications is

________%NR.

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Maneuvering limitations with a sling load are limited to a maximum of ____ angle of bank in

forward flight. Side flight is limited by bank angle and is _________.

30; decreased as airspeed increases

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Rearward flight with a

sling load is limited to ____ knots.

35 knots

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Above ____ KIAS avoid abrupt, full pedal inputs to prevent excess tail rotor system loading.

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To prevent APU overheating, APU operation at ambient temperature of _________ and

above with engine and rotor operating, is limited to _____ minutes.

43C , 30 min

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Manual control available. If the automatic stabilator control system fails in flight and

operation cannot be restored:

1) The stabilator shall be set full down at speeds below 40 KIAS.

2) The stabilator shall be set at 0 degrees at speeds above 40 KIAS.

3) Autorotation airspeed shall be limited to 120 KIAS at all gross weights.

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The following slope limitations apply regardless of gross weight or CG, with or without

ESSS/ERFS.

a. ____ degrees nose-up, right wheel up or left wheel upslope. The slope limitations shall be

further reduced by ____ degrees for every ____ knots of wind.

15; 2; 5

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Do not exceed a touchdown sink rate of _____ feet-per-minute on level terrain and _____

feet-per-minute on slopes with gross weights of up to 16,825 pounds; above 16,825 pounds

gross weight do not exceed _____ feet-per-minute on level terrain and _____

feet-per-minute on slopes.

540; 360; 300; 180

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The pneumatic starter is capable of making a number of consecutive start cycles when

exposed to the environmental conditions specified. What are the start cycle, rest period

limitations when the ambient temperature is 30° C?

2 starts, 30 minutes.

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Maximum forward touchdown speed is limited to ____ knots ground speed on level terrain.

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These types

of oil pressure fluctuations are acceptable, even when oil pressure drops into the yellow

range (below _____ psi). Oil pressure should remain steady and should be in the ______ psi

range to ensure that when fluctuations occur, they remain in the acceptable range as defined

30; 45-60

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Maximum airspeed for one engine inoperative is _____ KIAS.

130

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What are the aircraft weight limitations?

UH-60M: 22,000 lbs

UH-60M external lift mission: 23,500 lbs

ESSS/ERFS helicopter on ferry mission (Airworthiness release required): 24,500 lbs

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Regarding torque, what is the 10-second transient for single engine?

135-144%

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BACKUP HYDRAULIC PUMP HOT WEATHER LIMITATIONS.

Match the temperatures below with the operating time limit for each.

FAT oC

-54o-32o C. Unlimited

FAT oC

33o-38o B. 24 Minutes

FAT oC

39o-52o A. 16 Minutes

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Bank angles shall be limited to ____ degrees when a PRI SERVO FAIL caution appears.

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Manual operation of the stabilator in flight is _____ except as required by _______ and

________ requirements or as alternate stabilator control in case the AUTO mode

malfunctions.

prohibited; formal training, maintenance test flight

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The main gearbox may be operated up to ____ minutes at a time with pressure

fluctuations when the helicopter is known to be at a _______ attitude (i.e., slope landings or

hover with extreme aft CG).

30; nose-up

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Regarding torque, what is the 10-second transient for dual engine, below 80 KIAS?

120-144%

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Sideward/rearward flight/hovering limits

45; 35; 45; 35

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Helicopters with the following equipment installed, operational, and turned on are permitted

to fly into trace or light icing conditions.

Windshield Anti-ice
Engine Anti-ice
Engine Inlet Anti-ice modulating valve
Pitot Heat
Insulated Ambient Air Sensing Tube

WEEPI

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Regarding torque, what is the continuous limit for dual engine, above 80 KIS?

0-100%

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Cabin doors may be fully open up to ____ KIAS.

145

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BACKUP HYDRAULIC PUMP HOT WEATHER LIMITATIONS.

Match the temperatures below with the cool down period for each.

-54 to 32 - N/A

33 to 38 - 72 minutes

39 to 52 - 48 minutes

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Maximum rotor brake pressure for engine start is ________ psi.

690

Windshield anti-ice check shall not be done when FAT is over _____.

27 degrees C (80 degrees F)

Regarding the NOTE for NP limitations, avoid operations in the _______ and _______ range except during start and shutdown.

20-40; 60-90

On the EICAS or PFD Power Pod: Green tapes and readouts indicate the_____________________________________________________.

normal operating range of the parameter the instrument represents.

Rearward ground taxi is ______.

prohibited

b. ____ nose downslope. Landing in downslope conditions with tail winds greater than ____ knots shall not be conducted. A low-frequency oscillation may occur when landing nose-down on a slope with the cyclic near the aft stop.

6, 15

Regarding Transmission Oil Temperature limitations, what are the continuous and precautionary ranges?

Continuous: -20-105; Precautionary: 105-140

The pneumatic starter is capable of making a number of consecutive start cycles when exposed to the environmental conditions specified. What are the start cycle, rest period limitations when the ambient temperature is 10° C?

2 starts, 3 minutes, 2 starts, 30 minutes.

Simultaneous moving of both ENG POWER CONT levers to __________ (throttle chop) in flight is prohibited.

IDLE or OFF

Cabin doors may be fully open up to ____ KIAS.

145

Searchlight airspeed limits. If use is required, the searchlight must be extended prior to reaching a maximum forward airspeed of ____ KIAS. With the searchlight extended, airspeed is limited to ____ KIAS.

100; 180

On the EICAS or PFD Power Pod: Red and Yellow striped tapes and red readouts indicate the limit ___________________.

Above or below which continued operation is likely to cause damage or shorten component life.

Minimum rotor brake pressure for engine start is ________ psi.

450

Regarding torque, what is the continuous limit for single engine?

0-135%

Operating an engine against the gust lock is ______.

prohibited

The maximum weight that may be suspended from the cargo hook is _____ pounds. The external load limit of the airframe will not be exceeded when using the cargo hook.

9,000

Regarding Transmission Oil Pressure limitations, what are the correct limitations for each condition?

Idle and Transient: 20-30; Continuous: 30-65; Precautionary: 65-130

The __#__ cabin ceiling tiedown fittings have a limited load capability of _____ pounds.

4,000;

The ___#___ net restraint rings in the cargo compartment are rated at ______ pounds capacity in any direction.

3500

The __#___ tiedown fittings installed on the cargo for can restrain a _____ pound load in any direction.

5000

Flight with cockpit door(s) removed is ______.

prohibited

If main transmission oil pressure is not steady during steady state forward flight or in a level hover, or if oil pressure is steady but under ______ psi, make an entry on the appropriate maintenance form.

Use of the rotor brake with engine(s) operating is restricted to __________ and __________ engine starts and operations at IDLE only.

single, dual

egarding engine torque, what is the 10-second transient for dual engine, above 80 KIAS?

100-144%

Any time an operational limit is exceeded, an appropriate entry shall be made on ________. Entry shall state what limit or limits were ______, ______, ______, and any additional data that would aid maintenance personnel in the maintenance action that may be required. The helicopter shall not be ______ until corrective action is taken.

DA Form 2408-13-1; exceeded, range, time beyond limits; flown

The minimum crew required to fly the helicopter is ____ pilots.

MAIN TRANSMISSION MODULE LIMITATIONS Sudden pressure drop (more than ______ psi) without fluctuation requires an entry on the appropriate maintenance form.

With engine and rotor not operating, the APU may be operated continuously up to an ambient temperature of ___°C.

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

Hovering turns greater than _____ degrees per second are prohibited. Intentional maneuvers beyond attitudes of _____ pitch or over _____ roll are prohibited.

30; +/-30; 60

NP1 or NP2 operation in yellow range (101% to 105%) is

not recommended as good operating practice.

Power off (autorotation) rotor speeds up to _______ are authorized for use by maintenance test flight pilots during autorotational RPM checks.

120% NR

Prolonged rearward flight and downwind hovering are to be avoided to prevent __________ in the helicopter and __________ to windows on open cargo doors.

accumulation of exhaust fumes; heat damage

Routine stops will be with engine(s) off, NR below _____, and with _______ psi applied to stop the rotor in not less than ______.

40%; 150-180; 12 seconds

Maximum airspeed for autorotation at a gross weight of 16,825 or more is ______ KIAS.

130

Regarding stowage provisions, maximum capacity for each storage compartment is _____ pounds.

125

Regarding weight limitations, maximum weight is further limited by cargo floor maximum capacity of ______ pounds per square foot.

300

Landing light airspeed limits. If use is required, the landing light must be extended prior to reaching a maximum forward airspeed of _____ KIAS. With the landing light extended, airspeed is limited to _____ KIAS.

130, 180

NP1/2 limits (4)

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

Power on NR limits (3)

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

Power off NR limits (auto) (3)

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

NG limits (2)

Continuous - 0 to 105% 12 second transient - 105 to 106%

Q limits Dual engine

Continuous at/below 80 KT - 0 to 120% Continuous above 80 KT - 0 to 100% 10 sec transient at/below 80 KT - 120 to 144% 10 sec transient above 80 KT - 100 to 144%

Q limits single engine

Continuous - 0 to 135% 10 second transient - 135 to 144%

TGT limits (all degrees C)

Normal - 0 to 793 30 min limit - 793 to 846 10 min limit - 846 to 879 2.5 min transient - 879 to 903 12 second transient - 903 to 949 Abort start limit - 851

Engine temperature limits

Continuous : -20 to 135 30 min limit : 135 to 150

Engine pressure limits

Idle - 22 to 26 PSI Normal - 26 to 100 PSI 5 Min limit - 100 to 120 PSI

Transmission oil temperature limits

Continuous : -20 to 105 Precautionary : 105 to 140

Transmission oil pressure limits

Idle/transient - 20 to 30 PSI Continuous - 30 to 65 PSI Precautionary - 65 to 130 PSI

Fuel limit ranges

Precautionary - 0 to 200lb each tank Normal - above 200lbs each tank

Engine starter limits

15 degrees and below - 2 start cycles, 3 min rest, 2 start cycles, 30 min rest Above 15 degrees - 2 start cycles, 30 min rest

Weight limits

60M - 22,000lb 60M external lift mission - 23,500 (only with cargo hook load above 8,000lb) 60M ESSS, ferry mission, AWR - 24,500

Cargo floor max capacity per SQ foot

300lb

Airspeed limits - Cargo hook up to 8,000lb

140

Airspeed limits - external lift above 22,000lb

120

Max airspeed above ________lbs for autorotation is ______________

Above 16,825 130KIAS

Max airspeed at or under ________lbs for autorotation is ______________

16,825 150 KIAS

SAS or HYD inop airspeed limits

1 system INOP - 170 2 system INOP - 150 2 system INOP IMC- 140

Hovering turn max rate

30 degrees per second

Pitch and roll limits

30 degrees pitch, 60 degrees roll

Sling load limits

30 degrees of bank Max 35 knot rearward flight

30 degrees nose down, big dick accelleration on takeoff, or diving manuevers can result in what (Warning)

The FCC commanding a stabilator Auto mode failure

Pneumatic inlet limits

Min : 40 PSGI, 30PPM, 300 degrees F Max 50 PSGI, 480 degrees F

Engine starts at _______________ pressure altitude can result in ________

Starts above 18,000' PA can result in hot start

Parameters for a crossbleed start

Rotor 100% NG 90% ENG 1/2 Anti-Ice ON advisory may NOT be on

When do we use fuel boost pumps, not in an EP

With JP4 when: Above 5000ft PA When XFEED at any altitude

max airspeed skis installed

155

Max airspeed gunner doors open

170

Max airspeed to open or close cabin doors

"Below 80 KIAS"

Where does VNE read in STAB MAN mode

150

Prohibited maneuvers

Turns 30/s, Pitch 30, Roll 60 Reward ground Taxi Throttle chop

Restricted Maneuvers

-Manual ops of stab (exception training, maintenance) -Downwind hovering

Nose upslope with skis, at what weight may parking brake not hold AC in position

16000

slope limits Nose up, left ski high, right ski high

10 degrees

Ice rate meter calibrated for what speed?

100 knots If faster, may read greater icing rate

Flight into *moderate* icing requires what in addition to WEEPI

Blade de ice

Blue force tracker limits (got you!)

26 to 71 degrees C

water buckets shall not be used when what is installed

skis

Red/yellow tapes and red readouts indicate

limit above or below where operation may cause damage or shorten life

Yellow tapes and readouts indicate

Special attention should be given to the parameter

Green tapes and readouts indicatie

normal operating range

Demand for max power with different ETFs engines will do what

Normal to have Q split when lower ETF engine hits TGT limiting the high power engine may exceed dual engine Q limit

Write ups

2408-13-1. What limits exceeded Range Time beyond limits

Restarting helicopter after using JP4

If within 2 hours of shutdown and spinning up Run NR 100% for 2 minutes to purge hot fuel from nacelle area

engine overspeed in flight

prohibited, only for checks on the ground by authorized personnel

Airspeed limit external hoist up to 8000

140

Airspeed limit hoist above 8000 and gross weight above 22000

120

Transmission and nose up slope - whats normal

10 degree slope - 30-35 PSI 15 degree slope - 10 - 15 PSI

Avoid what during engine anti ice ops

Extreme lower power requirements (less than 10 Q) Rate of descent > 1900fpm Ground bleed air heater operation below 100% NR Turn off cabin heat before high rate of descent

Flight into ANY turbulence prohibited if

sling load attached, INOP collective trim

How to fill CEFS tanks

3 inches below filler port, room for expansion

In what conditions is it normal to see transmission oil pressure fluctuations?

-When flying with pitch attitudes above +6 degrees -During transient maneuvers (IE hovering in gusty conditions) Having T oil P in 45-60 ensures that even with fluctuations, oil P stays in an acceptable range

During an auto with the rotor fully decoupled, what is it normal to see for NP1 and NP2

It is normal to see a speed split between NP1 and NP2 up to 107% for an engine referenced to 100%

Momentary checks of NPs over ___% are authorized when?

Over 107% NP is authorized by MTPs during autorotational RPM checks

After flying with JP4 and going back to JP5/8, what must be done?

3 more flights with fuel boost pumps on

Max airspeed for auto with volcano isntalled

100KIAS

Max Rate of descent with Rescue Hoist Load

1000 fpm

Maneuvering flight which results in __________________ is prohibited

which results in severe blade stall and significant increase in 4-per-rev vibration

Slope limits with FLIR installed

6 degrees nose up 15 degrees left and right reduce by 2 degrees every 5 knots

Helicopters with blade erosion kit tape are prohibited from doing what

flying into icing conditions - sounds like any severity is prohibited

Only acceptable CEFS configurations

All 4 2 tanks - 1 on each outboard 2 tanks - 1 on each inboard

Fuel tank jettison envelope

Level flight: 0-120 knots - no more than 1 ball out of trim 120+ - Must be fully in trim Descending: Below 80 knots jettison not recommended 80 knots - 1000FPM descent max 90 knots - 875FPM descent max 100 knots - 750FPM descent max 110 knots - 625FPM descent max 120 knots - 500FPM descent max Above 120 not recommended Subtract 125FPM for every 10 knots