777 Cold Weather

Question 1

Cold Wx
Preflight, while using external preconditioned air…
Why?

Pilot Bulletin, 2023

Answer 1

LOWER RECIRC FANS - Off
for more efficient heating.

Question 2

Get current field conditions from…

Pilot Bulletin, 2023

Answer 2

Not ATIS.
Notams (FD Pro or WSI) for FICON or SNOWTAM.
ACARS>Company>Weather Req…

Question 3

Engine Start:
Turn Engine Ani-Ice on when and in what weather?

Pilot Bulletin, 2023

Answer 3

After both engines started and 10C or less and icing conditions exist or anticipated.

Question 4

Cold Wx:
Engine run up: When and How?

Pilot Bulletin, 2023

Answer 4

3C or less and EAI required.
ASAP after Eng start (not in congested)
and not more than 15 min intervals.
Within 5 minutes of TO.

50% N1, 1-2 seconds, vibrations <4

Question 5

Cold Wx:
Delay flap extension…

Pilot Bulletin, 2023

Answer 5

After deiced, until needed for Before Takeoff checklist (approaching runway.)

If done early, use 24% penalty.

Question 6

During Cold Wx ops,
Reduced or Max thrust takeoff?

Pilot Bulletin, 2023

Answer 6

Max Thrust required for any takeoff with clutter.

Question 7

Cold Wx:
Snowfall with only center of runway cleared.

Answer 7

If > 6 inches, outer not usable.
777 uses 40 meters wide strip.
FM has procedure.

Question 8

Cold Wx:
After landing Flaps:

Pilot Bulletin, 2023

Answer 8

Suspect ice on flaps from arrival through rollout,

leave flaps extended and contact Ops.

Question 9

Cold Wx:
Walk around, prior to engine start…

FM: 5.10.2, 2024

Answer 9

Must be clear on top of engine from ingestion line forward and cowling/blades/spinner.

Question 10

Cold Wx:
Preferred method of obtaining HOT.

FM: 7.30.16, 2024

Answer 10

1) U-EHOT: connected to data source
2) ACARS MISC code - AH
3) U-EHOT: manual mode

Question 11

Cold Wx:
Preferred engine/APU status during anti-icing procedure.

FM: 5.10.14, 2024

Answer 11

Engines - ON
APU - Off

Question 12

Cold Wx:
In moderate to severe icing for 15 minutes…

FM: 5.10.10, 2024

Answer 12

If <70% N1 or engine vibrations:
One at a time:
toward Idle, then 70% N1 for 15 seconds

Question 13

Cold Wx:
Non-adhering frozen precip below what temperature?

FOM: 7.30.3, 2024

Answer 13

-15 C

Question 14

Cold Wx:
If using heated, forced air to remove accumulation…

FOM 7.30.3, 2024

Answer 14

then Type-I fluid application is required.

Question 15

Cold Wx:
Wing Check required when and by whom?

FOM 7.30.5, 2024

Answer 15

within 5 minutes of TO if any:

Nose check inconclusive.
HOT exceeded.
HOT uncertain (changing conditions)

By pilot assigned to operate the flight.