# SDR FDEA202403260372

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 26, 2024
- Submitted: March 26, 2024
- Operation: Air carrier
- Aircraft: [N840FD](https://openairdocs.org/aircraft/N840FD), registered now
- Make and model: Boeing 777F
- Registry model: [Boeing 777F](https://openairdocs.org/model/boeing-777f) (OpenAirDocs)
- Aircraft serial: 39682
- Aircraft time: 49,181 hours, 8,786 cycles
- System (JASC): [3411 · Pitot/Static System](https://openairdocs.org/jasc/3411)
- Part: Pitot Head
- Part number: 4071400904
- Condition: Failed
- Stage of operation: CR
- How discovered: 9
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/FDEA202403260372

## Discrepancy

AUTO PILOT DISCONNECTED AFTER LEVELING FL340.  ALTIMETERS LEFT AND RIGHT INDICATED 400' HIGH.  MULTIPLE EICAS : "AIRSPEED UNRELIABLE" " ENG EEC MODE R" "ENG EEC MODE L" " GND PROX WARN". ATC  READOUT SHOWED 300' LOW WHEN WE RETURNED TO FL 340'. EICAS BUTTON DEPRESSED. DECLARED EMERGENCY.     AMM: 34-21-03-4, AMM: 71-00-00-5, ALL EICAS MSG RELATED PITOT ADM PROBLEM. REPLACED RT PITOT ADM AND CYCLED AIRCRAFT POWER THEN ALL STATUS MSG DISAPPERED. CONFIRMED BOTH ENG RUN CHECKED NORMAL. A/C OK FOR SERVICE.

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