# SDR CALA2026012913421

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 27, 2026
- Submitted: January 29, 2026
- Operation: Air carrier
- Aircraft: [N670UA](https://openairdocs.org/aircraft/N670UA), registered now
- Make and model: Boeing 767322
- Aircraft serial: 29240
- Aircraft time: 92,418 hours, 18,447 cycles
- Engine: Pwa PW4060
- Engine time: 23,961 hours, 3,382 cycles
- System (JASC): [7200 · Engine (Turbine/Turboprop)](https://openairdocs.org/jasc/7200)
- Part: Blades
- Condition: Shingled
- Location: Nr 2 Eng
- Stage of operation: CR
- How discovered: V
- Nature of condition: E
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026012913421

## Discrepancy

RIGHT N1 VIBRATION OF 5.0 OR HIGHER WITH NOTICABLE VIBRATION. DEBRIEFED CREW.  STATED N1 VIBE WAS AT 5.0 THROUGHOUT CRUISE. VIBE DECREASED WHEN POWER ADDED TO ABOUT 3.0 & INCREASED BACK TO AROUND 5.0 WHEN POWER REMOVED. CREW STATED VIBRATION NOTICEBLE PHYSICALLY & AUDIBLY, BEGAN DURING T/O ROLL.  NOTED THAT ALL OTHER ENG INDS NORMAL. INSPD NR 2 ENG.  FOUND 13 FAN BLADES SHINGLED IAW FIM TASK 71-05 FAULT TREE 805.  PERFORMED BLOCKS 1,2 AND 2A, NO SIGNS OF FOD FROM INLET OR EXHAUST ON NR 2 ENG ,INLET CONE SEAL GOOD ,  PERFORMED BLOCK 15 ON SHT 2, NO SIGNS OF DAMAGE ON BLADES SHROUDS, IAW AMM TASK 72-00-00-820-801-N00 FAN UNSHINGLING PROCEDURE.  PERFORMED BLOCK 25 ON SHT 2, FAN BLADES SHROUDS LUBED IAW AMM 72-31-99-603-003-N00.

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