SDR FDEA201910072484

Service difficulty report · Adc · Doug MD11F

Difficulty date: October 7, 2019
Submitted: October 7, 2019
Operation: Air carrier
Aircraft: N603FE
Make and model: Doug MD11F
Aircraft serial: 48459
Aircraft time: 80,423 hours, 19,241 cycles
System (JASC): 3416 · Altimeter, Barometric/Encoder
Part: Adc
Part number: 4059060901
Part serial: 93030546
Condition: Failed
Location: Nr 2
Stage of operation: CL
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

DURING CLIMBOUT, NOTICED FIRST OFFICER'S AIRSPEED AND CAPTAIN AIRSPEED DID NOT MATCH, DETERMINED F/O INDICATOR WAS UNRELIABLE. STANDBY AIRSPEED AND ALTIMETER MATCHED THE CAPTAIN'S, NR 2 ADC FAILED A FUNCTIONAL TEST, R & R THE NR 2 ADC IAW MM 34-16-01-4. OPS CHECKED NORMAL.

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