• Attitude Flag (ATT): Notes:

  Before trouble shooting an ATT flag, make sure the IRU’s are in NAV mode, the fault light on the MSU is not illuminated, and status codes 02, 05 or 06 are not displayed on the ISDU. If the fault light is on and/or any of these codes are indicated, trouble shoot the IRU or DAA’s first.

  
  ATT Flag-in-view:

  1.Move Attitude XFR switch on P5 overhead panel to Both on 1 or Both on 2 (depending on the indicator that is flagged).
  
  2.If the ATT flag pulls when XFR switch is moved to the secondary attitude source then replace the DAA that normally feeds the indicator.
  
  3.If ATT flag stays in view when XFR switch is moved to the secondary source then replace the indicator.
  
  4.If DAA or indicator does not fix problem check wiring between them.

  
  ADI INFORMATION:

  

  
  Circuit Breakers:

  ADI #1: P18-2 = B1.

  ADI #1 ALTN: P6-1 = C8.

  ADI #2: P6-1 = B8.

  ADI #2 ALTN: P18-2 = B2.

  Instrument Transformer 2: P6-1 = A12.

  Instrument Transformer 1: P18-2 = A1.

  DAA IRS #1 DC: P18-2 = D3.

  DAA IRS #1 AC: P18-2 = D2.

  DAA IRS #2 DC: P6-1 = D10.

  DAA IRS #2 AC: P6-1 = D9.

  
  
  Applicable deferrals None.

Training Only