SDR CALA2022010500030

Service difficulty report · Air Data Module · Boeing 777222

Difficulty date: January 4, 2022
Submitted: January 5, 2022
Operation: Air carrier
Aircraft: N229UA
Make and model: Boeing 777222
Aircraft serial: 30557
Aircraft time: 78,406 hours, 9,162 cycles
System (JASC): 2921 · Hydraulic Accumulator, Auxiliary
Part: Air Data Module
Part number: 4071400904
Part serial: 97090888
Condition: Failed
Location: Left Pitot Adm
Stage of operation: IN
How discovered: O
Nature of condition: O
Precautionary procedure: O

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

What was found

RAM AIR TURBINE AUTOMATIC DEPLOYMENT SYSTEM TEST FAILED REF HAECO NON-ROUTINE NO.9472718 - ORIGINATED BY EMP V923294,SPEC NO .B777-29-4-7014. PERFORMED BY EMP V903668,TROUBLE SHOOTING FND LET PITOT ADM FAIL ,REPLACED THE ADM & CARRIED OUT OPERATIONAL TEST,RESULT NORMAL AS PER AMM 29-21-00-730-805 REV.93.