Limits Flashcards by eric jensen

N1 Limits

Min: 51%
Cautionary Auto only: 51-60%
Continuous: 60-100.1%
Take off (5min): 100.1-103.2%
Max T/O: 103.2%
Transient (30 sec): 103.8%

note: transient not to be used intentionally
note: idle may drop below 60% when systems are turned on

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N2 limits

Min: 95%
Cautionary: 95-101%
Continuous: 101-103%
Max: 103%
Transient (10 sec): 108%

Caut: when we see 103% it is anything between 102.5 and 103.49 thus we may be in the transient range without knowing

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ITT limits for normal ops

max cont: 755 C
take off (5 min): 755-810 C
Max T/O: 810 C
Transient (5 sec): 860

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ITT limits for starting

Max: 870 C
Transient (2 sec between 980 and 1090): 1090 C

note linear variation applies above 870 10 sec, and 980 C 2 sec

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Torque limits

max cont: 100%
take off (5 min): 100-108.5%
Max T/O: 108.5%
Transient (6 sec): 115%

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Nr limit (power on)

Min: 95%
Cautionary: 95-101%
Continuous: 101-103%
Max: 103%
Transient (10 sec): 108%

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Nr limit (power off)

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

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Fuel px limits

cautionary: 0-7 psi
continuous: 7-25 psi
max: 25 psi

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min fuel on landing

shall be no less than 50 lb in the #1 cell

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Eng Oil Px

min: 40 psi
cautionary (N1<72%): 40-80 psi
Continuous: 80-110 psi
max: 110 psi

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Eng Oil Temp

min Oat for starting: -25

continuous: 10-115 C
Max: 115 C
Transient (5 min with N1 at 61+/-1): 127 C

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XMSN oil px

min 30 psi
continuous 30-55 psi
cautionary 55-70 psi
max 70 psi

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xmsn oil temp

min OAT for start -25

continuous 0-115 C
Max 115 C

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Eng Starter limit (BATT)

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

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Eng Starter Limit (ext pwr)

25 sec on 60 sec off
25 sec on 60 sec off
25 sec on 30 min off

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Gen Amp limits

continuous: 0-200 A
Max 200 A
transient (5 sec) 300A

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Aux Gen Amp limits

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

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Hyd px

min 1200 psi
cautionary 1200-1400 psi
continuous 1400-1600 psi
max 1600 psi

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Vne IFR

145 kias or Vne pow on lim

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Vmini (min IFR)

60 kias

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V min app

60 kias

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v max app

130 kias

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min airspeed for auto (without close ext ref)

60 kias

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max airspeed with torque between 100-108.5

75 kias

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Vne with one or both doors removed/open

85 kias

Vne with door opening or closing

70 kias

Max V for moving searchlight

120 kias

Vne with searchlight ext

none

Vne with ext load on cargo hook

SL-5000 100 kias 5000'+ decrease 3 kt every 1000' from 100 kias

Vne

in accordance with table but generally 152 kias

Max fwd speed at touchdown after eng fail

50 kias

Vne while hoisting

none stationary only

Max Operating Alt

15000' Hp

Min amb air

-13 F (-25 C)

Max amb air

122 F (50 C) decreases with adiabiatic lapse rate every 1000'

Slope limits

nose up 12 deg x slope 10 deg nose down 2 deg nose down (unobstructed tail) 5 deg

Max GW for ground ops not to include towing or t/o)

6393 lb

Max GW

6283 lb

Min GW for flight

3803 lb

Max GW with ext load on cargo hook

6944 lb

Min use height for helipilot with both helipilot operative

fly attentive below 500' AGL fly manually below 250' AGL

min use height for one helipilot inop (Sas 1 or 2)

fly attentive above 500' AGL fly manually below 500' AGL

One helipilot inop airspeed and ROC

130 kias 750 FPM flight attentive fly manual in all other conditions

FD mode min use height

all modes in cruise/climb/descent 500' AGL all modes during appr 50' AGL

ILS steepest appr gradient

3.0 deg

ILS max ROD

1000' FPM

Max airspeed with FD engaged or coupled with any helipilot inop

100 kias

Max load of baggage compartment

250 lb

max unit load of baggage compartment

102 lb/sqft

bleed air heater usage

should be off for all T/O and landing and shall be off in all flight conditions requiring max eng power available

Max Nr for rotor brake

40%

Max hoist load

450 lb

max avail hoist length

164'

Cargo hook load limit

up to 9000' 3086 lb over 9000' minus 110lb for every 1000'

Min equip for IFR ops

Helipilot (AFCS) SAS 1/2, ATTD Hold operational and on Elec Sys Pri DC gen, Aux DC gen, Batt all operational Hyds Hyds 1 and 2 on and operational

Prohibited ops

prohibited from operating in icing conditions IFR ops prohibited with any doors open/removed or with ext load

Prohibited maneuvers

aerobatic maneuvers protracted operations in avoid region of HV diagram intentional entry into retreating blade stall

Required Equipment for night/overwater flight

RADALT VSI

N2/Nr transient time limit

10 seconds

N1 transient time limit

30 seconds

Torque transient time limit

6 seconds

Normal ITT transient time limit

5 seconds

Starting ITT transient time limit

(linear scale)10 sec up to 980 2 sec up to 1090

Eng Oil Temp Transient Time limiet

5 min with N1 at 61+-1%

Amp transient time limit

5 seconds