# SDR UIEA2023040200301

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 2, 2023
- Submitted: April 4, 2023
- Operation: Air carrier
- Aircraft: [N406KZ](https://openairdocs.org/aircraft/N406KZ), registered now
- Make and model: Boeing 747-4KZF
- Registry model: [Boeing 747-4KZF](https://openairdocs.org/model/boeing-747-4kzf) (OpenAirDocs)
- Aircraft serial: 36133
- Aircraft time: 52,181 hours, 10,048 cycles
- System (JASC): [7220 · Turbine Engine Air Inlet Section](https://openairdocs.org/jasc/7220)
- Part: Unknown
- Condition: Unknown
- Location: Unknown
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2023040200301

## Discrepancy

ENGINE #1 INDICATED HIGH VIBE OF 4.9 CLIMBING THROUGH 15,000' UP TO FL 240.(<P>ACCOMPLISHED FIM TASK ON 71-00 FIGURE 118 STEPS 1 &2, NO DEFECTS FOUND. INSTALLED ACCELEROMETER IAW 77-31-01. PENDING OPS CHECK. ACCOMPLISHED VIBRATION SURVEY PER AMM 71-00-00.</P> / <P>FAN BLADE LUBE ACCOMPLISHED ON ENGINE #1 PER AMM 72-31-02 REV. 107. PER PPE, REMAPPED FAN BLADES. ALL MOMENT WEIGHTS ON SPINNER CONFIRMED TO P07 OR P014 BY REPLACING 2 EA WEIGHTS.</P> / <P>PERFORMED ENGINE #1 FAN TRIM BALANCE PER AMM 72-31-00. VIBRATION SURVEY CHECKED NORMAL 0.02 MPA.</P> / <P>RETORQUED ENGINE #1 SPINNER PER AMM 72-31-01.</P> / <P>REACTIVATED ENGINE #1 NORMAL ACCELEROMETER PER AMM 77-31-01.</P>)

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