Service difficulty report · Fmc · Boeing 777222

Difficulty date
October 30, 2011
Submitted
November 30, 2011
Operation
Air carrier
Aircraft
N779UA
Make and model
Boeing 777222
Aircraft serial
26941
Aircraft time
62,727 hours, 11,222 cycles
Engine
Pwa PW4077
Part
Fmc
Part number
S243W0011801
Part serial
94080243
Condition
Faulty
Location
Nr 2
Stage of operation
NR
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

FMC R INOPERATIVE. TRIED CYCLING FMC SW TO R AND THEN BACK TO AUTO, NO HELP. THE MAT SHOWS MTC MSG 31 1024. PERFORMED FIM TASK 31-44-866, NO HELP. DEFERRED FMC RT IAW MEL 3461D. -INF- :FIM 31-44 TASK 866 C. FAULT ISOLATION PROCEDURE IF NEEDED CPM 483-9051 AND CPM-ACMF 483-9052. -INF- :FOR CPM-ACMF MM 31-41-01- 400-801. -INF- :REF FIM ABOVE. THE M002 MODULE FOR RT AIMS NORMALLY AND FIRST CHOICE IS THE CPM BASIC THAT IS 483-9051. CPM-ACMF MODULES MUST BE USED IN LT AIMS SO IT IS PREFERRED TO SAVE SPARES FPR LT AIMS DEFECTS. -INF- :REPLACED THE RIGHT AIMS MOO2 MODULE, FOUND IT TO BE BAD OUT OF STOCK, DISPLAYED FMC R AND AUTOTHROTTLE SYSTEM STATUS MESSAGES, REINSTALLED ORIGINAL MODULE. NEEDS SERVICEABLE M002. PART ON AOG. RDF-T :NOT ENOUGH GROUND TIME. REPLACED FAILED RT AIMS M002 & LOADED CORRECT SOFTWARE.