# SDR CALA2026092919964

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 27, 2026
- Submitted: September 29, 2026
- Operation: Air carrier
- Aircraft: [N39450](https://openairdocs.org/aircraft/N39450), registered now
- Make and model: Boeing 737924ER
- Aircraft serial: 40004
- Aircraft time: 42,685 hours, 15,982 cycles
- Engine: Cfmint CFM567B27
- System (JASC): [3411 · Pitot/Static System](https://openairdocs.org/jasc/3411)
- Part: Pitot Tube
- Part number: 0851HT1
- Part serial: 291420
- Condition: Faulted
- Location: Zone 100
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026092919964

## Discrepancy

AIRSPEED DISAGREE, RAN NON NORMAL CHKLST,  SUSPECT FROZEN PITOT TUBE, FO SIDE IAW AMM 34-11-01,  PERFORMED INSP OF FO SIDE PITOT PROBES. DID NOT FIND ANY ABNORMALITIES. ALL 3 PITOTS BEGAN WARMING UP WITH SWITCH.  T/S  IAW FIM 31-62, TASK 876.  FOUND FAULTS 31-65060 & 31-65050,  AIRSPEED DISAGREE, ALTITUDE DISAGREE. ACCOMPD STEP E. EVALUATION, NO FINDINGS. ACCOMPD PITOT STATIC SYS FLUSHING IAW AMM 34-11-00-170-802, RT STATIC & LT & RT  PITOT SYS FLUSHING WITH NO FINDINGS.  PITOT & STATIC LEAK CHKD GOOD.  ACCOMPD STEPS. F(2)(3)(5).  DURING RESISTANCE CHK, FOUND RT UPPER F/O PROBE WITH 7 OHMS, ON REMOVAL OF PROBE, RESISTANCE OPS CHKD GOOD AT 48 OHMS. WIRING CHKS BTWN PROBE & OVERHEAD PANEL, NO SHORTS TO GRND WITH GOOD CONTINUITY IAW WDM 30-31-12-4.   REPLACED F/O PITOT PROBE,  PERFORMED INSTALL UP TO STEP F7 IAW AMM 34-11-01.  PERFORMED INSTALL TEST OF F/O PITOT PROBE. OPS CHKD GOOD.  APPLIED FILET SEAL TO BASE PLATE IAW AMM 34-11-01.

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