Service difficulty report · Adc · Boeing 74747UF

Difficulty date
October 11, 2014
Submitted
October 13, 2014
Operation
Air carrier
Aircraft
N492MC
Make and model
Boeing 74747UF
Aircraft serial
29253
Aircraft time
69,028 hours, 12,000 cycles
Part
Adc
Part number
4040800911
Part serial
32112619
Condition
Malfunctioned
Location
Right
Stage of operation
NR
How discovered
O
Nature of condition
P
Precautionary procedure
A

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

What was found

FIRST OFFICER LOST AIRSPEED & ALTITUDE ON PFD. SWITCHED TO LT ADC, RETURNED TO NORMAL, NO EICAS MSG. RT ADC REPLACED & ALL SYS OPERATE NORMAL. PITOT STATIC CHECK ACCOMPLISHED IAW MM & OK. LOG PG 650212 & 650214.

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