NEW natops limits Flashcards by eric jensen

N1 limits

Min - 51% red
Cautionary (auto only) - 51-60% yellow
Continuous - 60-100.1% green
take-off (5 min) - 100.1-103.2% yellow
Max t/o (5 min) - 103.2% yellow/red
Transient (30 sec) - 103.8% red

note: transient can’t be used intentionally; N1 can go below 60% when gen and other systems are on

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N2 limits

Min - 95%
cautionary - 95-101% yellow
continuous - 101-103% green
Max - 103% red
transient (10 sec) - 108%

Caut: when 103 is shown it is anywhere between 102.5 and 103.49 so you could be in the transient regime without realizing
Note: can’t intentionally use transient

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ITT limits - normal ops

Max continuous - 755 C green
T/O (5 min) - 755-810C yellow
T/O max (5 min) - 810 C
Transient (5 sec) - 860C red

can’t intentionally use transient

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ITT limits (start)

Max - 870 C green
Transient - 1090 (linear variation above 870 10 sec and 980 2 sec)
can’t intentionally use transient

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Torque limits

Max Cont - 100% green
T/O (5 min) - 100-108.5 yellow
Max T/O (5 min) - 108.5
Transient (6 sec) - 115%

can’t intentionally use transient

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Nr power on limits

Min - 95% red
Caut - 95-101 yellow
Continuous - 101-103% green
Max - 103%
Trans (10 sec) - 108%

can’t use transient intentionally

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Nr power off limits

Transient (10 sec) - 80%
Min - 90%
Cont - 90-110%
Max - 110%

power off is defined as a split by at least 1% in N2/Nr

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Fuel px limits

Caut - 0-7 psi yellow
Cont - 7-25 psi
max 25 psi

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Min fuel

planned fuel reserve shall be no less than 142 lb in #1 cell
but shall land with no less than 50 lb in #1 cell
warn: sideward flight / xwind hover when indicated fuel is <22 may cause flameout
note: don’t have to combo planned fuel reserve and min fuel

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Eng Oil Px limits

min - 40 psi
caut (with N1<72%) - 40-80 psi
Cont - 80-110 psi
max - 110 psi

note during cold starts oil px can temporarily exceed 110 psi

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Eng Oil Temp

Min oat for start - -25C
Cont - 10-115 C
max 115C
transient (5 min with n1 61+-1) - 127C

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XMSN oil px

min - 30 psi
Cont - 30-55 psi
Caut - 55-70 psi yellow
Max - 70 psi red

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XMSN oil temp

Min oat for start - -25
Cont - 0-115C
Max - 115C

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Eng start limits batt

40 sec on 60 sec off
40 sec on 60 sec off
40 sec on 30 min off

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Eng start limit with ext pwr

25 sec on 30 sec off
25 sec on 30 sec off
25 sec on 30 min off

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Gen limits

Cont - 0-200A
Max - 200A
trans (5 sec) - 300A

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Aux Gen limits

Cont - 0-150 A
Max - 150 A
Trans (5 sec) - 150 A

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Hyd limits

Min - 1200 psi
Caut - 1200-1400 psi
Cont - 1400-1600 psi
Max - 1600 psi

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Vne

in accordance with chart but nominally 152

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Vne ifr

lesser of 145 kias or the chart

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V mini (ifr)

60 Kias

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V min app

60 kias

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Vmax app

Study These Flashcards

130 kias

Min auto speed without close ext reference

Study These Flashcards

60 kias

Max airspeed between 100-108.5% torque

75 kias

Vne with a door open or removed

85 kias

Vne with door opening/closing

70 kias

Max speed for searchlight movement

120 kias

Vne with searchlight extended

no change to normal Vne

Vne with loads on the hook

SL-5000' - 100KIAS above 5000' - decreases 3kt every 1000'

Max forward speed at touchdown post engine fail

50 kt

Max operating altitude

15000' Hp

Min ambient air temp

-13F (-25C)

Max SL OAT

122F (50C) decreases at a rate of 2 c for every 1000ft

slope T/O and landing limits

Nose up - 12 deg Side up - 10 deg Nose down - 2 deg Nose down (unobstructed tail) - 5 deg

Max GW for ground ops

6393 lb

Max GW

6283 lb

Min GW for flight

3803 lb

Max GW with load attached

6944 lb

AFCS Min use height with both helipilot operative:

fly attentive below 500' agl fly manually below 250' agl

AFCS Min use height with either helipilot inop

fly attentive above 500' agl fly manually below 500' agl

Max airspeed and ROC while one helipilot is inop

130 kias / 750 fpm fly attentive up to 130 kias and/or 750 fpm and above 500' agl, fly manual in all other conditions

FD min use height

all modes in cruise, climb, descent - 500 agl all modes during approach - 50' agl

limits with FD on/coupled with any helipilot inop

max airspeed 100 kias fly attentive above 500' agl fly manually below 500' agl

When can MEC be used

only in emergency when EEC has failed or for training purposes

Baggage compartment max load

250 lb

Baggage compartment max unit load

102 lb/sqft

Bleed air heater usage

bleed air heater should be off during t/o and landing shall be off in all flight conditions requiring max eng power available

Rotor brake max Nr

40% engine start with rotor brake on is prohibited

Max hoist load

450 lb

Max available hoist cable length

164 ft

Cargo hook load limit

-1000' to 9000' - 3086 lb above 9000' decrease 110lb every 1000'

Min equipment for IFR ops

Helipilot (afcs) SAS 1, SAS 2, Attd hold operational and on Electrical Sys Primary DC gen, Aux DC gen, battery all operational Hydraulics Hyd systems 1 and 2 both operational and on

Prohibited ops

Prohibited from operating in icing conditions IFR ops are prohibited with and doors open/removed or with external ops

Prohibited Maneuvers

Aerobatic maneuvers Protracted operations in avoid region of HV diagram Intentional entry into retreating blade stall

Required Equip for night/overwater flight

Radalt VSI

NEW natops limits Flashcards

(56 cards)