# SDR CALA2017061901896

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 19, 2017
- Submitted: June 19, 2017
- Operation: Air carrier
- Aircraft: [N229UA](https://openairdocs.org/aircraft/N229UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 30557
- Aircraft time: 66,492 hours, 7,805 cycles
- Engine: Pwa PW4090
- System (JASC): [7200 · Engine (Turbine/Turboprop)](https://openairdocs.org/jasc/7200)
- Part: Tube
- Part number: 50U66701
- Condition: Cracked
- Location: Nr 1 Engine
- Stage of operation: CL
- How discovered: O
- Nature of condition: M, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2017061901896

## Discrepancy

LEFT ENGINE EGT AND N1 EXCEEDANCE ON TAKEOFF.  FOUND AS126 SENSE TUBE CRACKED.  REPLACED THE TUBE IAW FIGURE 604, MM 72-00-00-290-829-N02 FOR 4090 ENGINE N1 WAS AT 105 FOR .4 SECONDS THIS IS IN AREA A IAW E3A NO INSPECTION NEEDED. IAW 72-00-00-290-828-N02, SUBTASK 290-063-N02. COMPLETED HOT SECTION BORESCOPE INSPECTION OF COMBUSTION CHAMBER, FUEL NOZZLES, HPT 1ST-STAGE VANES AND BLADES. HPT 2ND-STAGE BLADES AND 3RD-STAGE BLADES AND VANES.  AT THIS TIME FOUND NO LIMITING DEFECTS. IAW TASK 72-00-00-290-835-N02. TASK 72-00-00-290-836-N02. AND TASK 72-00-00-290-837-N02.

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