# SDR UIEA2021081701816

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 16, 2021
- Submitted: August 17, 2021
- Operation: Air carrier
- Aircraft: [N1489A](https://openairdocs.org/aircraft/N1489A), registered now
- Make and model: Boeing 767-31K
- Registry model: [Boeing 767-31K](https://openairdocs.org/model/boeing-767-31k) (OpenAirDocs)
- Aircraft serial: 27206
- Aircraft time: 110,067 hours, 22,076 cycles
- System (JASC): [3414 · Airspeed/Mach Indicator](https://openairdocs.org/jasc/3414)
- Part: Indicator
- Condition: Faulted
- Location: Airspeed
- Stage of operation: TO
- How discovered: O
- Nature of condition: P
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2021081701816

## Discrepancy

DURING T/O ROLL AIRSPEED WOULD STAGNATE AT CONSISTENT 20 KTS INTERVALS FOR +/- 2 SECONDS. T/O REJECTED AT 120 KTS.(<P>PERF L&R ADC BITE PER AMM 34-12-00. SYSTEM TEST GOOD. PER AMM 34-11-00. LEAK & OPS CHECK PASSED. INSPECTED PITOT TUBES & DRAIN, NO DESCREPANCIES NOTED.</P>)

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