# SDR WLDA200458

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 12, 2004
- Submitted: August 13, 2004
- Operation: Air carrier
- Aircraft: N351
- Make and model: Doug DC-10-30
- Registry model: [Doug DC-10-30](https://openairdocs.org/model/mcdonnell-douglas-dc-10-30) (OpenAirDocs)
- Aircraft serial: 46922
- System (JASC): [3417 · Air Data Computer](https://openairdocs.org/jasc/3417)
- Part: Adc
- Part number: HG280D5
- Part serial: 681
- Condition: Inoperative
- Location: Cockpit
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: J, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/WLDA200458

## Discrepancy

NGU/NAP AIR TURNBACK DUE TO AIRSPEED INDICATOR FAILED AFTER TAKEOFF, INDICATING 90 KTS, F/O'S INDICATED SAME AS STANDBY A/S LATER ON.  SELECT FLAP LIMIT AND SELECT ELEV FEEL MANUAL LIGHTS CAME ON.  FOLLOWED PROCEDURES & RETURNED TO KNGU.  REMOVED AND REPLACED AIR DATA COMPUTER.  PERFORMED PITOT STATIC TEST FOUND NORMAL.

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