SDR 375PA0006

Service difficulty report · Computer · Boeing 7373Y0

Difficulty date: October 26, 2002
Submitted: October 28, 2002
Operation: Air carrier
Aircraft: N375PA
Make and model: Boeing 7373Y0
Aircraft serial: 23812
Aircraft time: 42,488 hours, 36,671 cycles
System (JASC): 2230 · Auto Throttle System
Part: Computer
Condition: Malfunctioned
Location: Autopilot
Stage of operation: TO
How discovered: V
Nature of condition: O
Precautionary procedure: K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

AUTO THROTTLE WOULD NOT ARM ON TAKE-OFF. ON DECENT INTO SFB, IN LEVEL CHANGE, AT MOVED FWD & BACK SWITCHING FROM "N" TO "RETARD" REPEATEDLY. CHK'D AUTO THROTTLE COMPUTER & RAN BITE CHK. ON CDU PER MM22-31-00 PG.501-508, NO FAULTS FOUND.

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