ERJ-145 Limitations

Question 1

WEIGHTS

Answer 1

Max Ramp Weight……………………..53351
Max Takeoff Weight……………………53131
Max Landing Weight…………………..44092
Max Zero Fuel Weight…………………40785

Question 2

SPEEDS

Answer 2

Vlo retraction….200KIAS Vfe9…..250KIAS
Vlo extension….250KIAS Vfe18…200KIAS
Vle…………………250KIAS Vfe22…200KIAS
Va………………….200KIAS Vfe45…160KIAS

Max Airspeed after Takeoff/During Climb without Trimming……160KIAS
Maximum Tailwind…..10KIAS
Maximum windshield wiper speed….170KIAS

Question 3

LOAD FACTOR LIMIT

Answer 3

FLAPS UP Positive…..2.5g
Negative…-1g

FLAPS DOWN Positive…..2.0g
Negative…0g

Question 4

FUEL

Answer 4

WING TANKS
Max Capacity…….5,717lbs per tank
Unusable…………..39lbs per tank
If any electric fuel pump is inoperative, increases to
365 lbs unusable per tank

VENTRAL TANK Max Usable…….1,863lbs
Unusable………..21lbs

TANK TEMPS Minimum…………-40C
Maximum………..52C

Max Fuel Imbalance………..800lbs

Question 5

APU

Altitude

Answer 5

Max Operating Altitude………..37,000’

Max Altitude for Start…………..30,000’

Question 6

ENGINE

Answer 6

ROLLS ROYCE AE3007A1E

N1 Max……..100%
N2 Max……..103.7%

Question 7

ENGINE

ITT

Answer 7

START………………800C

CONTINUOUS…..935C

Question 8

ENGINE

ITT TAKEOFF TEMP LIMITS

Answer 8

970C……………..limited to 5 minutes
971-992C………limited to 90 seconds
992C……………..Maximum

Question 9

ENGINE

OIL PRESSURE

Answer 9

Below 88% N2………………….34-110psi
Above 88% N2………………….48-110psi*
*34-48 psi allowed during takeoff and
go-around

Question 10

ENGINE

OIL TEMP

Answer 10

Minimum……………………..21C

Maximum……………………126C

Question 11

ENGINE

VIBRATIONS

Answer 11

LP Maximum…………………..1.8

HP Maximum…………………..1.1

Question 12

ENGINE

WARM UP TIME -PRIOR TO TAKEOFF

Answer 12

• 4 minutes for cold engine (shutdown for 90 minutes)
• 2 minutes for warm engine
• Minimum oil temperature for takeoff 40C OR run engine for 8 minutes and verify 21C or greater

Question 13

ENGINE

COOL DOWN TIME

Answer 13

Engine must run at idle or taxi thrust for 2 minutes prior to shutdown

Question 14

STARTER LIMITS

Answer 14

ON GROUND

Dry Motoring…..UP TO 5 MINUTES ON,
5 MINUTES OFF
First to Fourth Cycles……..1 MINUTE ON,
1 MINUTE OFF
Following Cycles……………1 MINUTE ON,
5 MINUTES OFF

IN FLIGHT
Maximum Continuous Operation Time…….5 MINUTES ON

Question 15

PRESSURIZATION

Answer 15

Max differential pressure…………..7.8psi
Max differential overpressure…….8.1psi
Max differential negative pressure…..-0.3psi

Question 16

ICING CONDITIONS

Answer 16

Max temperature for anti-icing equipment……..10C
Minimum temperature for anti-icing equipment….
…………………….-40C

Question 17

HOLDING CONFIGURATION

Answer 17

Gear…………………………………UP
Flaps………………………………..UP
Minimum Airspeed…………….200KIAS

Question 18

AUTOPILOT

Answer 18

Minimum Altitude during ILS Approach….200AGL
Minimum Engagement Height……….500’
Minutes Use Height………………………160’

Question 19

MISCELLANEOUS

Runway

Answer 19

Runway must be paved with +/-2% grade

Question 20

APU

Max Rotor Speed

Answer 20

108%

Question 21

APU

Maximum Starting Temperature

Answer 21

884C

Question 22

APU

Maximum Operating Temperature

Answer 22

680C (May be exceeded up to 717C for up to 5 minutes)

Question 23

APU

Starting Limits

Answer 23

Between 1-3 start attempts 1 min off

Between 3,4 start attempts 30 mins off

Question 24

Maximum Altitude for Flap Extension

Answer 24

20,000ft

Question 25

El. Generator MAX LOAD

Answer 25

400A

APU GEN above 30,000ft, 300A

Question 26

Maximum Battery Temperature

Answer 26

70C

Question 27

Minimum Total Air Temperature in cruise flight above 25,000ft

Answer 27

-45C

Question 28

Minimum battery temperature for APU start

Answer 28

-20C

Question 29

Minimum voltage for APU start

Answer 29

23.5 VDC