When is a new Dispatch Release required on the 777?

A new or amended release is required if:

• change of aircraft
• change of alternate
• MEL item
• performance limitates require an amandment
• the actual Zero Fuel Weight is greated than the planned Zero Fuel Weight by more than 10,000 lbs (4,500 kgs)
• if delayed on the ground past the Release Valid Util time (typically 4 hours after scheduled departure time)

FOM Rev 18: 7.1.4

Which altitudes are RVSM?

FL290 to FL410

FOM Rev 18: 7.1.7

What equipment must be operating for flight into RVSM?

• 2 independant Primary altimetry systems
• Mode-C capable SSR Transponder
• Altitude Alert system
• Automatic altitude Keeping device

[P'TAK for all you Trekkies]

FOM Rev 18: 7.1.7

When is the Extended Overwater Rule in effect?

With flights planned to operate more than 50 NM from shore.

FOM Rev 18: 7.1.13

What is required with the Extended Over Water Rule?

Appropriate:

• weather reports or
• forecasts,
• or any combination thereof

indicate that the weather condiations at any:

• airport to which dispatched or released or
• to any required alternate airport

will be at or above the authroized minimims at the ETA.

FOM Rev 18: 7.1.13

Alternate Airport Minimums

One Navaid (CAT I or circle)

One Navaid (CAT I or circle):

• + 400' (round up to nearest hundred)
• + 1 mi (1600m)

FOM Rev 18: 7.1.13-14

Alternate Airport Minimums

Two Navaids

Two Navaids (straight in to different runways):  (can be same frequency but different identifiers)

• +200' (round up to nearest hundred)
• +1/2 mi ((700m outside US) or 800m) to the higher of the two mins

FOM Rev 18: 7.1.13-14

Alternate Airport Minimums

CAT II

CAT II:

• 300'
• 3/4 sm (1200m) or 4000 RVR (1200m)

FOM Rev 18: 7.1.13-14

Alternate Airport Minimums

CAT III

CAT III:

• 200'
• 1/2 sm ((700m outside US) or 800m) or 1800 RVR (550m)

FOM Rev 18: 7.1.13-14

When is a takeoff alternate needed?

When:

• weather conditions are below CAT I minimums or
• unable to return to the departure airport.

FOM Rev 18: 7.1.14

What are the requirements for a valid takeoff alternate?

Must be:

• not more than one hour away (two engine aircraft)
  • normal cruising speed
  • still air
  • one engine inoperative
• In the 777 this translates to 400 Nm

FOM Rev 18: 7.1.14-15

What are the weather requirements for a ETP Alternate

To be listed on the flight plan, the ETP alternate weather conditions:

• reported, or
• forcast, or
• any comination thereof

shall indicate that the weather conitions at the ETA at the ETP alternate will be at or above Alternate Airport minimums.

FOM Rev 18: 7.1.15

ETOPS Alternate Airport Weather Requirements

The dispatch weather minima must be forcast to be at or above Alternate Airport Minimums fromthe earliest time of arrival to the latest time of arrival at the ETOPS Alternate Airport.

FOM Rev 18: 7.1.15

When is a destination alternate required?

If the

• weather reports or
• weather forcasts

1 hour before to 1 hour after ETA

• ceiling less than 2,000'
• visibility less than 3 miles

FOM Rev 18: 7.1.15

When is an additonal destination alternate required?

When both the destination and the alternate are marginal:

• 600' ceiling AND
• 2 miles visibility

If either element exceeds this amount the condition is not considered marginal.

FOM Rev 18: 7.1.15-16

What are the conditions for applying Exemption 3585?

Exemption 3585 is no longer approved on the Southern Air certificate.

FOM Rev 18 Bulletin 120

What is an isolated airport?

A destination airport with no alternate available. There must be a valid explanation as to the isolated airport condition, and the airport must be listed as an Isolated Airport in the FOM or in OpSpec C067. Checking this OpSpec is the responsibility of the Dispatcher.

FOM Rev 18: 7.1.18 & C.1.21
 

When is an alternate required for Flag Operation?

When:

• The flight time to destination is more than 6 hours or
• flight time is less than 6 hours and weather reports or forcasts for the diestination indicate that 1 hour before to 1 hour after the ETA:
  • ceiling less than 1500' + lowest circiling MDA if a circling approach is required, or
  • ceiling less than 2000' above field elevation or 1500'above the lowest published approach, whichever is greater
  • visibility is less than 3 mile or 2 miles above the lowest applicable minimum, whichever is greater.

Redispatch flights don't require an alternate if 6 hours or less from the Point of Redispatch and the minimums better than above.

FOM Rev 18: 7.1.18

When is a desitionation alternate required for International Supplemental Operations?

A destination alternate is required unless the flight is released to an Isolated Airport.

FOM Rev 18: 7.1.18

What is Minimum Diversion Fuel?

Minimum Diversion Fuel (FMC Reserve):

• Fly to the alternate
• then 45 minutes holding at 1,500'AGL

Fuel Requirements

Domestic

Enough fuel to:

• Fly to destination
• Fly to and land at the most distant alternate (when required)
• fly for 45 minutes at normal curising fuel consumption

FOM Rev 18: 7.1.23

Fuel Requirements

International

Enough fuel:

• fly to and land at destination
• fly for 10% total time from departure (or point of redispatch) to landing
• fly to and land at the most distant althernate (if required)
• fly for 30 minutes at holding speed 1,500'above the althernate airport (or destination if no alternate)

FOM Rev 18: 7.1.23

Fuel Requirements

Planned Redispatch

The greater of fuel required for:

• Initial Destination
  • Fly to the Point of Redispatch
  • Fly to and land at the initial destination
  • + 10% of the time from takeoff to POR to landing at the initial destination
  • fly to and land at the most distant initial alternate airport (if required)
  • fly for 30 min at holding speed at 1500'above the alternate (or initial dest if no alt) under standard temperature
• Final Destination
  • Fly to the Point of Redispatch
  • Fly to and land at the destination airport
  • + 10% of time required to fly from the POR and land at the destination
  • fly to and land at the most distant alternate (if required)
  • fly for 30 minutes at holding speed 1500'abuve the alternate (or initial dest if no alt) under standard temperature

FOM Rev 18: 7.1.24

Special Fuel Reserves in International Operations (777 only, OpSpec B043)

Enough fuel to:

• Fly to and land at the destination
• + 10% of the enoute time flight planned outside of Class 1 service volumes for over 1 hour. (position cannot be reliably fixed)
• Fly to and land at the most distant alternate
• Fly for 45 minutes at normal curising fuel consumption

FOM Rev 18: 7.1.25-26

Fuel Requirments

Planned Redispatch Isolated Airports

Enough fuel to (the higher of the two):

• Initial Destination
  • fly to the Point of Safe Return
  • fly to and land at the Initial Destination
  • + 10% of the total time to the initial destination
  • fly to and land at the most distant alternate (if required)
  • fly for 30 minutes at holding speed at 1500' above the alternate (or initial destination if no alt)
• Destination/Isolated airport
  • Fly to the Point of Safe Return
  • Fly to the destination
  • Fy for at least two hours at nomal cruising fuel

NOTE: PSR and POR are interchangable terms in this case

FOM Rev 18: 7.1.25

What is the 45 minute FAR RSV (Domestic Reserve Fuel) fuel burn based on.

Top of descent fuel flow.

FOM Rev 18: 7.1.26

What is FAR RSV (International Reserve Fuel)?

Fuel required for:

• 30 minutes after arriving over the alternate (or destination if no alternate)
• 1500' AGL
• Standard temperature
• holding speed
• If no alternate is available: flight for 2 hours based on top of descent fuel flow

FOM Rev 18: 7.1.27

What is ADD.xx (Additional Fuel)?

Added fuel to meet either company or regualtory requirements and included in MINF:

• ADD.TO: added for minimum takeoff fuel requirement
• ADD.E: added for ETP/ETOPS requirements
• ADD.LD: ensures REMF of 60 minutes after miseed, diversion, and landing at alt
• ADD.RC: added for redisptach requirments if the departure-redispatch airport burn is greater.

FOM Rev 18: 7.1.27

What is CF (Contingency Fuel)?

Fuel included in MINF, added by dispatch for anticipated delays, based on top of descent fuel flow.

FOM Rev 18: 7.1.27

What is Ballast Fuel?

Fuel that may not be used (except in an emergency) which keeps the plane inside the operating envelope.  It is included in MINF.  It must match on the OFP and the Load Sheet.  If not notify the Load Supervisor or Dispatch.

FOM Rev 18: 7.1.28

What is Unusable Fuel?

Fuel required for some MELS like a deferred fuel boost pump, or scavenging.  It is included as Ballast Fuel.  It must be matched on the load sheet and the OFP.  If not notify Dispatch and the Load Supervisor.

FOM Rev 18: 7.1.28

What is Extra Fuel?

Fuel added by the dispatcher for tankering, etc as specified in the OFP remarks.  The time value is based on fuel flow at top of descent.

FOM Rev 18: 7.1.29

What is the standard Taxi Fuel Burn Rate and time?

Standard taxi time is 20 minutes.  Based on historical data, high density airports may have a greater taxi time.

The 777 burns 83 lbs/min during taxi.  (37.6 kgs/min)

FOM Rev 18: 7.1.29

What does Block Out Fuel include?

Blockout fuel is the recommended fuel including:

• MINF
• EXTRA
• TAXI

FOM Rev 18: 7.1.29

What information should be provided to dispatch for an Inflight Reanalysis?

Inflight Reanalysis includes:

• Position from which the reanalysis originates
• ETA at that position
• FL at that position
• Estimated fuel at that position
• ATC reroute (if any)
• New flight level  (if applicable)
• Aircraft configuration (normal or non-normal)

FOM Rev 18: 7.1.29-30

Who is supposed to initiate a ReDispatch Message (RDM)?

When can it be issued?

The dispatcher initiates the RDM. 

It may not be issued more than 2 hours prior to the ETA to the POR based on departure time.

FOM Rev 18: 7.1.31-32

What are the Terminal Weather Definitions for the Redispatch Message (RDM)?

Open: 3,000' ceiling, and 5 sm visibility or greater

Operational: 1,000' - less than 3,000' ceiling and 3 sm - less than 5 sm visibility

Instruments: 600' - less than 1,000' cieling and 1 sm - less than 3 sm visibility

below 600' and 1 sm, the forecast will be sent in plain text.

FOM Rev 18: 7.1.32

ReDispatch Message

What is Required Fuel (Reserves and MINF)?

Reserves:

• 10% enroute time from POR to Destination
• Fuel to alternate (if required
• Hold for 30 minutes at 1500' AGL at the alternate (or destination if no alternate)

MINF = RESERVES + ADD.xx (LD or AL) + CF

FOM Rev 18: 7.1.32

How do we do a ReDispatch Acceptance (or Rejection)?

RDA

UTC time (if not sent by ACARS)

PIC's initials

(If rejected, a brief explaination of why.)

FOM Rev 18: 7.1.33