Skywest Airlines Erj 175 Limitations

Front 1

Structural Limitations

Max Ramp Wt

Back 1

85,870 lbs

Front 2

Structural Limitations

Max Take off weight

Back 2

85,517 lbs

Front 3

Structural Limitations

Max Landing weight

Back 3

74,957 lbs

Front 4

Structural Limitation

Max Zero Fuel Weight

Back 4

69,886 lbs

Front 5

Structural Limitations

Max AFT Cargo

Back 5

2,535 lbs

Front 6

Structural Limitations

Max FWD Cargo

Back 6

3,306 lbs

Front 7

Structural Limitations

Minimum runway width

Back 7

100 feet (SkyWest Airlines limitation)

59 feet 2 inches (Certification limitation)

Front 8

Structural Dimensions

Wing span

Back 8

85 feet 4 inches

94 feet 2 inches with new winglet

Front 9

Structural Dimensions

Aircraft Length

Back 9

103 feet 11 inches

Front 10

Structural dimensions

Tail Height

Back 10

32 feet 3 inches

Front 11

Maximum altitude and temperature limits

Max Operations altitude

Back 11

41,000 feet

Front 12

Maximum altitude and temperature limits

Max Takeoff and land

Back 12

8,000 feet

Front 13

Maximum altitude and temperature limits

Max temp. Takeoff and Land

Back 13

ISA +35 degrees C (52 degrees F)

Front 14

Maximum altitude and temperature limits

Min Temp. takeoff and Land

Back 14

-40 degrees C

Front 15

Maximum altitude and temperature limits

Max Runway slope

Back 15

+/- 2 %

Front 16

Maximum altitude and temperature limits

Max Tailwind

Back 16

15 kts

Front 17

Maximum altitude and temperature limits

Max single Pack operations

Back 17

31,000 feet

Front 18

Speed limits

VMO SL - 8,000 feet

Back 18

300 kIAS

Front 19

Speed limits

VMO 10,000 feet - Mach Transition

Back 19

320 KIAS

Front 20

Speed Limits

MMO

Back 20

0.82 mach

Front 21

Speed Limits

VA

Back 21

240 KIAS

Front 22

Speed Limits

VLO EXT

Back 22

250 KIAS

Front 23

Speed Limits

VLE RET

Back 23

250 KIAS

Front 24

Speed Limits

VLE

Back 24

250 KIAS

Front 25

Speed Limits

V Tire

Back 25

195 kts ground speed

Front 26

Speed Limits

Vrat Deploy Max

Back 26

Vmo/Mmo

Front 27

Speed Limits

Vmin (to provide electrical power with Rat deployed)

Back 27

130 KIAS

Front 28

Speed Limits

Vb (below 10,000 ft)

Back 28

250 KIAS

Front 29

Speed Limits

Vb (10,000 feet and above)

Back 29

270 / .76 M (whichever is lower)

Front 30

Speed Limits

Vwiper ops max

Back 30

250 KIAS (SkyWest Airlines Limitation)

Front 31

Speed Limits

Vwindow

Back 31

160 KIAS

Front 32

Speed Limits

Vfe 1

Back 32

230 KIAS

Front 33

Speed Limits

Vfe 2

Back 33

215 KIAS

Front 34

Speed Limits

Vfe 3

Back 34

200 KIAS

Front 35

speed Limits

Vfe 4

Back 35

180 KIAS

Front 36

Speed Limits

Vfe 5

Back 36

180 KIAS

Front 37

Speed Limits

Vfe full

Back 37

165 KIAS

Front 38

Speed Limits

Max recommended crosswind

Back 38

Runway Conditions wind speed
Dry 38 kts
Wet 31 kts
Compacted Snow 20 kts
Standing water/slush/wet/dry snow 18 kts
ICE including wet ice 12 kts

Note: due to engine compressor stall possibility, static takeoff is not recommended with crosswind component greater than 25 kts.

Front 39

Flight Controls (Slats/Flaps)

Max Altitude Extended

Back 39

20,000 feet

Front 40

Flight Controls (slats/Flaps)

Enroute Operations

Back 40

Prohibited

Front 41

Flight Controls (Spoilers)

Min spoiler Speed

Back 41

180 KIAS

Front 42

Flight Controls (Flaps)

CAT II Approach

Back 42

Mandatory Flaps 5

Front 43

Flight Controls (Flaps go around)

landing flaps "full"

Back 43

Go Around Flaps 4

Front 44

Flight Controls (Flaps go around)

landing flaps "5"

Back 44

Go Around Flaps 2

Front 45

System Limits (Battery)

Min voltage

Back 45

22.5 volts

Front 46

System Limits (Battery)

Min Temp

Back 46

-20 degrees C (NiCad)

Front 47

System Limits (Power Plant)

Make and model

Back 47

General Electric CF 34-8E5

Front 48

System Limits (Power Plant)

Start Temp

Back 48

815 degrees C

Front 49

System Limits (Power Plant)

Min Oil Temp start

Back 49

-40 degrees C.

Front 50

System Limits (Power Plant)

Starter cranking limits (ground)

Back 50

Starts
1 & 2 90 seconds ON, 10 seconds OFF
3 - 5 90 seconds ON, 5 minutes OFF between attempts

Front 51

System Limits (Power Plant)

Starter cranking limits (in flight)

Back 51

Start
1 & 2 120 seconds ON, 10 seconds OFF
3 - 5 120 seconds ON, 5 minutes OFF between start attempts

Front 52

Systems (Power Plant)

Starter cranking limits (Dry Motoring)

Back 52

Motoring
1 90 seconds ON, 5 Minutes OFF
2-5 30 seconds ON, 5 Minutes OFF between Dry Motors

Front 53

System Limits (Power Plant)

N1 tailwind start

Back 53

If it is necessary to perform an engine start with a tailwind, monitor N1 indication. If there is no positive increase of N1 before starter cutout (50% N2) the engine start must be manually aborted.

Front 54

System Limits (Power Plant)

Min duct pressure Crossbleed starts

Back 54

A minimum duct pressure of 40 psi (minus .5 psi for every thousand feet above sea level) is required prior to engine start.

Front 55

System Limits (Power Plant)

Time engine warm up

Back 55

After engine start allow 2 minutes for engine thermal stabilization before the use of high thrust settings. Taxi time at or near IDLE can be included in the engine warm up period.

Front 56

System Limits (Power Plant)

Engine Thrust N1

Back 56

1. Target N1 indication on the EICAS must be equivalent to the target N1 available via performance calculation.

2. N1 difference between FADEC value (indicated on EICAS) and computed value is "0" or this difference is positive and lower than or equal to .5%

Front 57

System Limits (Power Plant)

Reduced Thrust limitation

Back 57

Use of reduced takeoff thrust procedures is not allowed on runways contaminated with standing water, slush, snow or ICE.

Front 58

System Limits (Power Plant)

ATTCS (Automatic Takeoff Thrust Control System)

Back 58

Takeoff with the ATTCS "OFF" is not authorized.

Front 59

System Limits (Power Plant)

Engine cool down time

Back 59

following high thrust operation the engine will be operated a minimum of two minutes at or near idle prior to engine shutdown. Time of operation at or near idle, such as taxiing, is included in this two minute period.

Front 60

System Limits (Fuel)

Max fuel capacity

Back 60

20,935 lbs

Front 61

Systems Limits (Fuel)

Max imbalance

Back 61

794 lbs

Front 62

Systems Limits (Fuel)

Min fuel tank temp

Back 62

-40 degree C.

Front 63

Systems Limits (Fuel)

Crossfeed

Back 63

Fuel crossfeed must be selected OFF during takeoff and landing

Front 64

System Limits (APU)

Make and Model

Back 64

Sundstrand APS 2300

Front 65

System Limits (APU)

General limitations

Back 65

1. Wait 30 seconds after the EICAS is energized to start the APU.
2. Do not leave the aircraft unattended more than 5 minutes with the APU running.
3. simultaneous use of the APU bleed and the HP cart is prohibited.

Front 66

System Limits (APU)

APU starter duty cycle

Back 66

Start
1 & 2 60 seconds OFF between attempts
3rd 5 minutes OFF.

Front 67

Systems Limits (APU)

Start Temperature

Back 67

Min -54 degrees C
Max ISA + 35 degrees C

Front 68

System Limits (APU)

Start Altitude

Back 68

Max 30,000 feet

Front 69

System Limits (APU)

continuous Operation Temperature

Back 69

Min -54 degrees C
Max ISA + 35 degrees C

Front 70

System Limits (APU)

Continuous Operation Altitude

Back 70

33,000 feet

Front 71

System Limits (APU)

Electrical generator use altitude

Back 71

33,000 feet

Front 72

System Limits (APU)

Max altitude ECS bleed use

Back 72

15,000 feet

Front 73

System Limits (APU)

Max altitude Main engine start

Back 73

21,000 feet

Front 74

System Limits (Pressurization)

Max differential pressure

Back 74

Up to 37,000 feet 7.8 psi
Above 37,000 feet 8.34 psi

Front 75

System Limits (Pressurization)

Max differential over pressure

Back 75

8.77 psi

Front 76

System Limits (Pressurization)

Max Differential negative pressure

Back 76

-0.5 psi

Front 77

System Limits (Pressurization)

Max Differential pressure Take off and landing

Back 77

0.2 psi

Front 78

System Limits (Hydraulic)

Min Reservoir temp for engine start

Back 78

-18 degrees C.

Front 79

System Limits (Brakes)

BTMS for take off

Back 79

Brake temperature indication must be in the green range for take off

Front 80

Systems Temp (Brakes)

Norm PSI

Back 80

3000 psi

Front 81

System Limits (Brakes)

Anti Skid protection limits

Back 81

1. Touchdown deactivation, WOW + 3 Sec or wheel speed > or = to 50 kts ground speed.
2. Take off operative speed = or > than 30 kts ground speed.
3. Inoperative = or < 10 kts ground speed

Front 82

System Limits (Thrust Reversers)

Go around

Back 82

Do not attempt a go around maneuver after deployment of the thrust reversers

Front 83

System Limits (Thrust Reversers)

Min Rev on landing

Back 83

Upon landing, thrust reversers should be set to MIN REV at 60 kts and be closed at 30 kts

Front 84

System Limits (thrust Reversers)

Min Rev for RTO

Back 84

During RTO, the thrust reversers can be used until the airplane comes to a complete stop

Front 85

System Limits (Thrust Reversers)

Use of forward thrust after reversers

Back 85

After selecting reverse thrust, do not move the thrust levers into the forward thrust range until the REV icon on the EICAS is shown in amber or green.

Front 86

System Limits (Thrust Reversers)

Powerback operations

Back 86

The use of thrust reversers for power back operations is prohibited.

Front 87

System Limits (ICE and Rain)

Operation on the ground

Back 87

The anti-ice system must be operating when the OAT is 10 degrees C or less and :
- Icing conditions exist, or
- for takeoff, with the ceiling less than 1,700 feet

Front 88

System Limits (ICE and Rain)

Operation in flight

Back 88

The engine and wing anti-ice systems operate automatically, in case of ice encounter when the ice protection mode selector is in the AUTO position.

Front 89

System Limits (Auto flight control system)

Min Engagement Height

Back 89

400 feet AGL

Front 90

System Limits (Auto flight control system)

Minimum Use height (Precision approach)

Back 90

50 feet

Front 91

System Limits (Auto flight control System)

Min use height (Non-precision approach)

Back 91

MDA

Front 92

System Limits (Navigation)

Use of TAS, TAT, and SAT

Back 92

Information only valid above 60 kts

Front 93

System Limits (Navigation)

Use of Back course

Back 93

Back course approaches using IESS are prohibited.

Front 94

System Limits (Communications)

Transmitting with VHF 1

Back 94

The standby magnetic compass indication is not valid.

Front 95

System Limits (Instrument)

Barometric altimeter minimums

Back 95

Must be used for all CAT I approaches.

Front 96

System Limits (EGPWS)

EGPWS procedures

Back 96

Pilots are authorized to deviate from their current ATC clearance to the extent necessary to comply with an EGPWS warning.

Front 97

System Limits (EGPWS)

Navigation using EGPWS

Back 97

1. Navigation is not to be predicated on the use of the Terrain Awareness system.
2. The use of predictive EGPWS functions should be manually inhibited when landing to an airport that is not in the EGPWS airport database to avoid unwanted alerts.
3. The terrain display is intended to be used as a situational tool only and may not provide the accuracy and/or fidelity on which to solely base terrain avoidance maneuvering.

Front 98

System Limits (EGPWS)

QFE operations

Back 98

The use of predictive EGPWS functions should be manually inhibited during QFE operations if GPS data is unavailable or inoperative.

Front 99

System Limits (FMS)

RNP

Back 99

RNP Navigation is not authorized at this time

Front 100

System Limits (FMS)

FMS Speed Mode

Back 100

The use of FMS speed mode is prohibited in the event of engine failure

Front 101

System Limits (FMS)

FMS PERF INIT use

Back 101

Use of the FMS PERF INIT settings in a mode other than FULL PERF is not authorized at this time.