SDR DALA2022121908197

Service difficulty report · Adc · Boeing 767332

Difficulty date: December 16, 2022
Submitted: December 19, 2022
Operation: Air carrier
Aircraft: N188DN
Make and model: Boeing 767332
Aircraft serial: 27583
Aircraft time: 112,974 hours, 16,872 cycles
System (JASC): 3416 · Altimeter, Barometric/Encoder
Part: Adc
Condition: Faulted
Stage of operation: IN
How discovered: O
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

RECEIVED ALT DISAGREE EICAS MESSAGE CA ALT 340, FO 34220, STBY 34500, FOLLOWED QRH DESENDED TO FL 280 AT 280 ATC INFORMED WERE AT 280, CAPT 280, FO 28220 STBY 285, REMOVED AND REPLACED LEFT ADC IAW AMM 34-12-01, OPS CHECKED GOOD, NO FAULT NOTED, PERFORMED TESTS 30 OK FOR SVC.