# SDR IPXA2026101456665

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 14, 2026
- Submitted: October 16, 2026
- Operation: Air carrier
- Aircraft: [N328UP](https://openairdocs.org/aircraft/N328UP), registered now
- Make and model: Boeing 767-34AF
- Registry model: [Boeing 767-34AF](https://openairdocs.org/model/boeing-767-34af) (OpenAirDocs)
- Aircraft serial: 27754
- Aircraft time: 71,226 hours, 24,125 cycles
- System (JASC): [3414 · Airspeed/Mach Indicator](https://openairdocs.org/jasc/3414)
- Part: Adc
- Part number: 4040800916
- Part serial: 35532774
- Condition: Malfunctioned
- Location: Zone 200
- Stage of operation: CR
- How discovered: O
- Nature of condition: F
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2026101456665

## Discrepancy

EMERGENCY DECLARED,  IN CRUISE EXPERIENCED AIRSPEED UNRELIABLE SITUATION PER QRH CHECKLIST WE DETERMINED THE LEFT SIDE WAS UNRELIABLE. DUE TO NON SPECIFIC FIM TASK, USED FAULT CODE INDEX  WITH CODE 34 12 77 01 REV 149, REPL L ADC IAW AMM 34-12-01/401 REV 149, ADC TEST SATIS NO FAULTS, MCDP 30 TEST C/O IAW AMM 22-00-02/201 REV 149, TEST SATIS, NO FAULTS. DETAILED INSP C/O IAW AMM 34-11-01/601 REV 149 & NO FINDINGS.

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