# SDR DALA2026091705195

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 17, 2026
- Submitted: September 18, 2026
- Operation: Air carrier
- Aircraft: [N955DZ](https://openairdocs.org/aircraft/N955DZ), registered now
- Make and model: Boeing 737-9GPER
- Registry model: [Boeing 737-9GPER](https://openairdocs.org/model/boeing-737-9gper) (OpenAirDocs)
- Aircraft serial: 38743
- Aircraft time: 30,463 hours, 17,477 cycles
- System (JASC): [3414 · Airspeed/Mach Indicator](https://openairdocs.org/jasc/3414)
- Part: Adiru
- Condition: Faulted
- Stage of operation: TO
- How discovered: O
- Nature of condition: N
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2026091705195

## Discrepancy

ATO- APPROX 100KTS DUE TO AIRSPEED DISAGREE.  REPLACED LEFT ADIRU PER AMM 32-21AND PITOT PROBE TUBE PER B737-34-11. PERFORMED HIGH LEVEL PUMP UP, NO FAULTS PRESENT. CYCLED EEC SWITCHES BACK TO NORMAL PER B737 SDS 73-21-00 EEC'S GO TO ALT WHEN AIRSPEEDS DISAGREE, NO FURTHER FAULTS. (LP 9506432 - AIRCRAFT WAS GROUNDED)

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