CH14 - EDTO

Question 1

Broadly speaking, which fuel requirements apply to an EDTO sector in-flight?

Answer 1

Regular in-flight fuel requirements in CH16 - sufficient fuel to divert to a Category A or B airport at any given time.

Question 2

If you approach the CPE and your predicted fuel is below CPE requirement, what action should you take?

Answer 2

None - as EDTO is predominantly a planning exercise only.

Question 3

What are the in-flight fuel requirements from CH16?

Answer 3

(T-CHAFF)

• Trip Fuel to proceed to a Category A or B Airport;
• Contingency Fuel;
• Holding Fuel, when required; and
• Arrival or Approach Allowance;
• Final Reserve Fuel;
• Fuel, if necessary, to meet other mandated fuel requirements, e.g. CDL/MEL requirements.

Question 4

What happens if the EDTO alternate becomes unavailable after entering the EDTO segment?

Answer 4

The flight may continue at the PIC’s discretion

Question 4

What must you have at the EEP before passing?

Answer 4

• Two-way communications with ATC;
• Two-way communications with Flight Dispatch;
• In-flight Fuel Requirement met;
• No serviceability issues with the aircraft
• NOTAMS and messages for the relevant EDTO Alternates have been reviewed;
• EDTO Alternate(s) useability and weather, via an updated weather forecast

Question 5

Can you enter the EDTO segment with a significant system failure?

Answer 5

Yes - the PIC may elect to enter the EDTO segment to proceed to an airport, if doing so is assessed to be a lower risk than diverting to an airport that is geographically closer.

Question 6

What is a significant systems failure?

Answer 6

• Engine failure;
• Land ASAP on ECAM
• Increased fuel consumption exceeding available reserves
• Only one generator remaining
• Only one main generator remaing and GREEN system affected
• Any other situation presenting adverse safety on flight

(eQRH CPS)

Question 7

In the event of a significant systems failure, which category of airports are available?

Answer 7

Category A, B or C, however there is no requirement to land at the nearest Category C airport.

Question 8

Which must be used, maximum diversion time or distance?

Answer 8

Either - the least limiting

Question 9

Diversion strategies

Answer 9

1. Time - VMO/MMO
2. Fuel - LRC
3. Obstacle - Green Dot

Question 10

What are the three failure cases at CPE?

Answer 10

1. One Engine Inoperative;
2. Depressurised; and
3. One Engine Inoperative and Depressurised.

Question 11

The Diversion Profile is defined as:

Answer 11

What is the diversion profile?

• Descent to the required diversion altitude;
• Cruise at the AFM approved speeds;
• Descent to 1500 feet above the EDTO Alternate; and
• Approach and landing.

Question 12

Why would the CPE fall beyond the EXP or prior to the EEP?

Answer 12

CPE takes into account wind. EEP and EXP do not.

Question 13

What basic fuel item is not taken into consideration in the CPE calculation.

Answer 13

30 minutes FRF.

Question 14

Below a probability of __ %, forecasts are disregarded.

Answer 14

40%

Question 15

What factors are taken into consideration for the EDTO Alternate Weather Assessment?

Answer 15

• Forecast ceiling and visibility;
• Forecast crosswind component, including gusts, for the landing runway expected to be used must be less than the maximum crosswind permitted for a One Engine Inoperative landing.

Question 16

Which airports are considered for EDTO?

Answer 16

Category A, B, C