# SDR CALA2026031714627

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 11, 2026
- Submitted: March 17, 2026
- Operation: Air carrier
- Aircraft: [N57864](https://openairdocs.org/aircraft/N57864), registered now
- Make and model: Boeing 757-33N
- Registry model: [Boeing 757-33N](https://openairdocs.org/model/boeing-757-33n) (OpenAirDocs)
- Aircraft serial: 32588
- Aircraft time: 73,735 hours, 22,724 cycles
- System (JASC): [3411 · Pitot/Static System](https://openairdocs.org/jasc/3411)
- Part: Pitot Tube
- Part number: 0851FJ1AI
- Part serial: 247949
- Condition: Fod
- Location: Zone 100
- Part time: 73,695 hours, 22,713 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: C, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026031714627

## Discrepancy

IAS DISAGREE EICAS AT CRUISE. QRH ACCOMPLISHED DETERMINED RIGHT SIDE INCORRECTCREW REPORTS F/O AIRSPEED FLUCTUATES FROM 6-20 KNOTS DIFFERENCE FROM CAPTAIN  , STANDBY INST AIRSPEED AGREES WITH CAPTAIN , WHEN F/O SWITCHES TO ALTN AIR DATA , INFO IS CORRECT AND CAPT AND F/O AIRSPEEDS MATCH, SUSPECT F/O PITOT HEAT INOP LEADING TO CLOGGED TUBE, OR AIRDATA MODULE FAIL , OR POSSIBLE SYSTEM LEAK PERFORMED FLUSH OF THE FO PITOT SYSTEM IAW AMM 34-11-00-173-009. SMALL AMOUNT OF DEBRIS CAME OUT OF THE SYSTEM. WILL REQUIRE LEAK CHECK IAW AMM TASK 34-11-00-795-180 DUE TO THE DRAIN LINE BEING DISCONNECTED AND RECONNECTED DUE TO THE FLUSH. QD FOR FO PITOT ADM RECONNECTED. PERFORMED PITOT/STATIC PROBE HEATER RESISTANCE CHECK IAW TASK 30-31-00-200-807 RESISTANCE OF FO PITOT HEATER WITHIN LIMITS. CONFIGURED CAPT AND FO PITOT SYSTEMS FOR LEAK TEST UP TO STEP G. OF IAW AMM TASK 34-11-00-795-180. WHEN TESTING FO SIDE (PER STEP. I) IN ISOLATION VIA THE MANIFOLD, LEAK RATE IS WITHIN ACCEPTABLE LIMITS & AIRSPEED IS APPROX 5 KNOTS BELOW THE TARGET. WHEN TESTING IT IN CONJUNCTION WITH THE CAPT SIDE BOTH AIRSPEEDS ARE 12 KNOTS BELOW TARGET. CAPT SIDE IN ISOLATION SHOWS AN EXCESSIVE LEAK. FURTHER T/S REQUIRED TO RULE OUT THAT THERE IS A LEAK ON THE CAPT SIDE. CONFIRMED NO LEAKS IN CAPT'S AND FO'S PITOT SYSTEM. BOTH CAPT'S AND FO'S AIRSPEED AGREE. ACCURACY AND LEAK CHECKS LEAK CHECKS GOOD REF MM34-11-00-795-180. PREVIOUS UPDATE REFERRES TO LEAK IN CAPT'S PITOTNOTICED.

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