OPOS Spects

Question 1

LAHSO WX Requirements

Answer 1

Weather minimums can be no lower than 1,000 ft and 3 miles (PAPI or VASI available and working), otherwise 1,500 ft and 5 miles are required.

No windshear reported in the last 20 minutes prior to LAHSO clearance being issued.

The tail wind on the LAHSO runway cannot be greater than 3 kt.

Question 2

Winter OPS

How much frost is allowed under wing?

Answer 2

1/8 inch

Question 3

Winter OPS

When must cold wx preflight be preformed?

Answer 3

OAT 5° C or less

Wing fuel temp 0°C or less

Atmospheric conditions conducive to icing

A/c parked overnight and may have been exposed to frost/ precip. Etc..

Any through flight where residual ice may be present

Cold soak ice suspected in fuel tank areas

Question 4

Winter OPS

What should you do if taxing in icing conditions for > 30 mins or fan vibration is detected?

Answer 4

Run each engine up individually to 54% n1 for 30 secon

Question 5

Winter OPS

When taking off in icing conditions…

Answer 5

Takeoff power must be set to 54% n1 for 30 seconds or until fan vibration is normal

Question 6

Winter OPS

What do you do if you suspect Ice accretion on fan blades in flight?

Answer 6

Reduce one thrust lever at a time towards idle then advance to min of 70% n1 for 10-30 seconds

Question 7

Winter OPS

What auto brake setting for contaminated runways?

Answer 7

Med

Question 8

What must be included on release? (6)

Answer 8

Aircraft ID

Trip or flight #

Dept airport, intermediate stops, destination and alternates

IFR/VFR

minimum fuel

Wx reports, forecast for each airport

Question 9

Winter OPS

System includes protection for…

Answer 9

Wings 
Cowls 
Windshield 
ADSP /TAT probes 
Wiper system

Question 10

ICE AND RAIN

How does the engine bleed valve fail?

Answer 10

Open

Question 11

ICE AND RAIN

How many ice detectors?

Answer 11

2

Question 12

ICE AND RAIN
In flight Ice detectors automatically turn on wings and cowl until —- minutes after icing condition is no longer detected.

Answer 12

5 minutes

Question 13

ICE AND RAIN

How do you configure wing cowls on ground?

Answer 13

Through MCDU

Question 14

ICE AND RAIN

How long does MCDU setting ice conditions inhibit the ice detector logic after takeoff?

Answer 14

1700’agl or 2 minutes whichever occurs first

Question 15

ICE AND RAIN

How long does MCDU setting ice conditions inhibit the ice detector logic after takeoff?

Answer 15

1700’agl or 2 minutes whichever occurs first

Question 16

ICE AND RAIN

When will cowls turn on?

Answer 16

After engine start if in auto and set to eng or all in MCDU

Question 17

ICE AND RAIN

When will wings turn on ground?

Answer 17

Set to auto with MCDU set to all with wheel speed greater than 40 kts

Question 18

ICE AND RAIN

When are the ADSP heated?

Answer 18

With engine running or airborne

Also if you push the heater button which overused the logic on ground

Question 19

ICE AND RAIN

Describe the wing anti ice test.

Answer 19

10 minutes after takeoff or 10000’

Wing valves open for 60 seconds or if all slats increase 10°c whichever occurs first

Question 20

ICE AND RAIN

Will windshield heat work on ground?

Answer 20

Yes but only with 2 AC sources

Except they both run for 120 seconds during Elec PBIT test

Question 21

ICE AND RAIN

Will windshield heat work in flight with only one AC source?

Answer 21

Yes the captains only, if it fails the FO side will work