What was found
F/O ALTIMETER FLUX PLUS/MINUS 200 AT CRUISE, FL290 AND FL330NO FLUX IN ALTN ADC REPLACED RT ADC IAW MM. ADC TEST CHECKS GOOD. ETOPS CATEGORY 'B': DIVERSION OR TURNBACK.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
F/O ALTIMETER FLUX PLUS/MINUS 200 AT CRUISE, FL290 AND FL330NO FLUX IN ALTN ADC REPLACED RT ADC IAW MM. ADC TEST CHECKS GOOD. ETOPS CATEGORY 'B': DIVERSION OR TURNBACK.