# SDR IPXA2026030541774

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 5, 2026
- Submitted: March 6, 2026
- Operation: Air carrier
- Aircraft: [N466UP](https://openairdocs.org/aircraft/N466UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 25482
- Aircraft time: 35,496 hours, 21,667 cycles
- System (JASC): [3417 · Air Data Computer](https://openairdocs.org/jasc/3417)
- Part: Adc
- Part number: 4040800911
- Part serial: 33715066
- Condition: Inoperative
- Location: Zone 200
- Stage of operation: CL
- How discovered: O
- Nature of condition: G
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2026030541774

## Discrepancy

AIR TURN BACK - UNRELIABLE AIRSPEED DURING CLIMB OUT. R&R L/H ADC , OPS CHECK GOOD IAW 757 AMM 34-12-01. WORK DONE BY CAT QUALIFIED MECHANIC.

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