SDR RYNA201210020038

Service difficulty report · Adc · Boeing 76733AER

Difficulty date: October 2, 2012
Submitted: October 4, 2012
Operation: Air carrier
Aircraft: N637TW
Make and model: Boeing 76733AER
Aircraft serial: 25403
Aircraft time: 66,080 hours, 14,205 cycles
System (JASC): 3417 · Air Data Computer
Part: Adc
Part number: 4040800906
Part serial: 377751377752
Condition: Failed
Location: Zone 100
Part time: 66,080 hours, 14,205 cycles
Stage of operation: CR
How discovered: O
Nature of condition: G
Precautionary procedure: A

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

What was found

DUAL AIR DATA COMPUTER FAILURE. RETURNED TO LAND AT RFD. REMOVED AND REPLACED LEFT AND RIGHT AIR DATA COMPUTERS PER AMM 34-12-01. PERFORMED HIGH LEVEL LEAK CHECK PER AMM 34-11-00. BOTH LEFT AND RIGHT PITOT STATIC SYSTEMS CHECKED NORMAL AND VERIFIED ACCURACY WITHIN LIMITS AT FIELD, 5000, 10,000, 20,000, 30,000,AND 40,000 FT.

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