# SDR 2024FA0000004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 1, 2024
- Submitted: January 4, 2024
- Operation: General aviation
- Aircraft: [N79TS](https://openairdocs.org/aircraft/N79TS), registered now
- Make and model: Raythn HAWKER800XP
- Aircraft serial: 258511
- Aircraft time: 14,295 hours, 10,114 cycles
- System (JASC): [3411 · Pitot/Static System](https://openairdocs.org/jasc/3411)
- Part: Pitot System
- Part number: UNKNOWN
- Part serial: NA
- Condition: Blocked
- Location: Zone 100
- Part time: 14,295 hours, 10,114 cycles
- Stage of operation: DE
- How discovered: O
- Nature of condition: S
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2024FA0000004

## Discrepancy

LOST AIRSPEED INDICATOR DURING DESCENT IN EXCESSIVE/SEVERE ICING. ALSO RECEIVING A PITOT/VANE HEAT FAILURE ANNUNCIATOR LIGHT.   PERFORMED VISUAL INSPECTION OF PILOTS/COPILOT'S PITOT/STATIC PROBES. PERFORMED TEST OF PILOT/COPILOT PITOT PROBE AND STATIC PLATE HEAT. PERFORMED OPERATIONAL TEST OF #1/#2 ADC. PERFORMED LEAK TESTING OF PILOTS/COPILOT'S PITOT SYSTEM AND FOUND LEAK RATE WITHIN LIMITS. PERFORMED DRAINING OF PITOT/STATIC LINES FROM AIRCRAFT KEEL. ALL TESTING PERFORMED WITH NO DISCREPANCIES NOTED IAW AMM 34-10-05 AND 34-11-19.

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