I was reading about center tank fuel shutoff.

 

Tthere are three variations for center tank fuel operations:

 

1. Standard procedure in accordance with AD 2001-08-24, AD 2002-24-51 and AD 2002-19-52

 

Principal procedure considerations

 

a. Ground operations:

Center tank fuel pump switches: OFF with fuel center tank fuel lower than 1.000 lbs

Center tank fuel pump switches: ON with fuel center tank fuel higher than 1.000 lbs

 

b. Take Off:

Center tank fuel pump switches: OFF with fuel center tank fuel lower than 5.000 lbs when ready for taxi

Center tank fuel pump switches: ON with fuel center tank fuel higher than 5.000 lbs when ready for taxi

 

c. Climb or cruise

Center tank fuel pump switches: OFF with fuel center tank fuel lower than 1.000 lbs

 

d. Descent and landing

Center tank fuel pump switches: OFF with fuel center tank fuel lower than 3.000 lbs

 

e. Cruise flight

Center tank fuel pump switches: ON (optional) with fuel center tank fuel higher than 1.000 lbs

 

Other considerations

At first indication of fuel pump low pressure the fuel pumps must be positioned OFF

Both center tank pump switches OFF if the center tank is empty

In a low fuel situation both center fuel pumps may be selected ON

 

 

2. Althernative Method of Compliance (AMOC) to AD 2002-24-51

 

Same as described in 1. for steps (a) and (B)

 

c. Climb or cruise

Option 1. Center tank fuel pump switches: ON after Take Off and pitch attitude has been reduced to begin acceleration to a climb speed of 250 knots or greater if fuel in center tank is more than 2.000 lbs

Option 2. Center tank fuel pump switches: ON after passing 10.000 ft with fuel center tank fuel lower than 5.000 lbs

Center tank fuel pump switches: ON only one pump and open crossfeed valve when center tank fuel lower than 2.000 lbs

 

d. Descent and landing

Center tank fuel pump switches: ON only one pump and open crossfeed valve with fuel center tank fuel lower than 3.000 lbs

 

Other considerations

Same as described i 1.

 

 

3. Althernative Method of Compliance (AMOC) to AD 2001-08-24 and AD 2002-24-51 for aircraft with Automated Center Tank Fuel Pump Shutoff

 

It is need apply the procedure for Automated Center Tank Fuel Pump Shutoff in lieu of two methods described.

 

 

Now the questions for PMDG group:

 

1. Boeing Amendment 39-16785 documents shows in section (h) that for the aircraft with center tank fuel pumps system as described need one placard adjacent to the pilot's primary flight display with text "AD 2002-24-51 fuel usage restrictions required". Is this will be implemented in a future for PMDG NGX?

 

2. Will be modelled automatic sutoff system for the center tank fuel boost pumps according Boeing Amendment 39-16785 section (g)?

 

Thanks!

http://forum.avsim.n...res-what-is-ad/

http://forum.avsim.n...ff-for-takeoff/

 

There are also some other same topics.

Based in AMOC i include for the phase of flight the use of the center tank fuel pumps.

 

See ya!

I turn them off when they reach 500 lbs, keeps things simple on my end.

I had them always on when there were some fuel in the central tank... Whoops...

Hm... Me too Thanks guys, new procedure will be in place from my next flight.