Service difficulty report · Adc · Boeing 767375

Difficulty date
December 21, 2010
Submitted
March 15, 2011
Operation
Air carrier
Make and model
Boeing 767375
Aircraft time
88,930 hours
Part
Adc
Part number
4040800906
Condition
Failed
Stage of operation
CL
How discovered
O
Nature of condition
J
Precautionary procedure
A

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

What was found

(CAN) AFTER T/O, CAPT LOST AIRSPEED AND ALTITUDE INSTRUMENTS. RECOVERED INSTRUMENTS BY CHANGING TO ALTERNATE AIR DATA SYSTEM. CAPT FELT FLIGHT DIRECTOR SYSTEM WAS UNRELIABLE AND ELECTED TO FLY AIRCRAFT MANUALLY. CAPT AIR DATA INFO RETURNED WHEN ALTN AIR DATA SELECTED. CAPT ADC WOULD NOT TEST. FOUND FAULT BALL SET ON CAPT ADC. FOUND STATIC LINE NOT SECURED ON CA ADC. CAPT ADC REPLACED ON SPEC PER AMM 34-12-01. ALL TESTS SERVICEABLE.