# SDR AALA2019061879001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 16, 2019
- Submitted: June 18, 2019
- Operation: Air carrier
- Aircraft: [N831NN](https://openairdocs.org/aircraft/N831NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 33211
- Aircraft time: 28,898 hours, 11,677 cycles
- System (JASC): [3411 · Pitot/Static System](https://openairdocs.org/jasc/3411)
- Part: Pitot Tube
- Part serial: 273483
- Condition: Faulty
- Location: Exterior
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA2019061879001

## Discrepancy

AIRCRAFT WAS GROUNDED: PILOT REPORTS AIRSPEED DISAGREE / ALT DISAGREE CAUTIONS, AIRSPEED LOW  WARNING IN FLIGHT FL 280, EEC (S)  WENT TO ALTERNATE MODE. EVENTUALLY FO SIDE RETURNED TO NORMAL, FOLLOWED BY CA SIDE RETURNING TO NORMAL APPROX. 5 MIN LATER. ALL ENGINE HEATS /  PITOT HEATS TO PROPER POSITIONS. NO OTHER WARNINGS & CAUTIONS. MAINTENANCE FOUND THE L/H PITOT AT FAULT, REPLACED IAW AMM 34-11-01 LEAK AND OPS TEST OK.

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