Service difficulty report · Adc · Boeing 7572Q8

Difficulty date
December 4, 2009
Submitted
December 29, 2009
Operation
Air carrier
Aircraft
N704X
Make and model
Boeing 7572Q8
Aircraft serial
28163
Aircraft time
42,402 hours, 13,917 cycles
Part
Adc
Part number
4040800912
Condition
Inoperative
Location
E/E Bay
Stage of operation
TO
How discovered
O
Nature of condition
G
Precautionary procedure
C

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

What was found

ACFT DID A RTO AT 90 KTS DUE TO THE LT AIRSPEED INDICATOR BEING INOPERATIVE. MX FOUND BOTH THE LT AIRSPEED INDICATOR AND ALTIMETER INOP. PERFORMED ADC TEST TWICE SYS OPERATES NORMALLY. ACCOMPLISHED REMOVAL AND REINSTALL OF LT ADC. CARRIED OUT L ADC TEST. OPS NOW NORMAL. ACFT OK FOR CONTINUED SVCE. ETOPS CATEGORY 'E': PROBLEMS WITH SYS CRITICAL TO ETOPS.

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