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Flight Director (FD) Flag on Co-Pilot PFD


Taimoor
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Hello C130 professionals!

In an E Model Hercules, Flight Director Flag (FD flag) came in view on Co Pilot side PFD on ground during normal checks. Against the defect, all associated LRUs were replaced/swapped with serviceable ones. Even the PFD was swapped with pilot side, yet the flag did not disappear. Continuity of wiring was also double checked and was found SAT. No visible issue was observed yet the flag did not disappear. Autopilot engages without any defect and is working fine. Any ideas as to what might cause this or any previous experience, please do share.

Thanks!

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12 hours ago, Taimoor said:

Hello C130 professionals!

In an E Model Hercules, Flight Director Flag (FD flag) came in view on Co Pilot side PFD on ground during normal checks. Against the defect, all associated LRUs were replaced/swapped with serviceable ones. Even the PFD was swapped with pilot side, yet the flag did not disappear. Continuity of wiring was also double checked and was found SAT. No visible issue was observed yet the flag did not disappear. Autopilot engages without any defect and is working fine. Any ideas as to what might cause this or any previous experience, please do share.

Thanks!

Defect is  with  SUIT modification  aircrafts or IAUP aircrafts!

Munir Abbasi  

Home Hercules Pakistan

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13 hours ago, Taimoor said:

Hello C130 professionals!

In an E Model Hercules, Flight Director Flag (FD flag) came in view on Co Pilot side PFD on ground during normal checks. Against the defect, all associated LRUs were replaced/swapped with serviceable ones. Even the PFD was swapped with pilot side, yet the flag did not disappear. Continuity of wiring was also double checked and was found SAT. No visible issue was observed yet the flag did not disappear. Autopilot engages without any defect and is working fine. Any ideas as to what might cause this or any previous experience, please do share.

Thanks!

Use the built-in
diagnostics to troubleshoot the autopilot/flight directory
system. Record all 6 digits in sequence of both left and
right columns of the diagnostics data. Press and hold any
3 active MSP buttons for 2 seconds. The PFD shall
display the REPORT MODE. Use the APP Pitch Wheel
to select the codes.

Munir Abbasi

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On 12/13/2020 at 9:21 AM, munirabbasi said:

Use the built-in
diagnostics to troubleshoot the autopilot/flight directory
system. Record all 6 digits in sequence of both left and
right columns of the diagnostics data. Press and hold any
3 active MSP buttons for 2 seconds. The PFD shall
display the REPORT MODE. Use the APP Pitch Wheel
to select the codes.

Munir Abbasi

Defect code was analysed. Problem was with the reversionary relay.

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