# SDR CALA2026051416260

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 13, 2026
- Submitted: May 18, 2026
- Operation: Air carrier
- Aircraft: [N660UA](https://openairdocs.org/aircraft/N660UA), registered now
- Make and model: Boeing 767-300
- Registry model: [Boeing 767-300](https://openairdocs.org/model/boeing-767-300) (OpenAirDocs)
- Aircraft serial: 27115
- Aircraft time: 127,729 hours, 19,541 cycles
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Fan
- Part number: 6066224
- Part serial: 1149
- Condition: Faulty
- Location: Rh Recirculation
- Part time: 31,680 hours, 4,499 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026051416260

## Discrepancy

R RECIR FAN EICAS C THE RIGHT RECIRCULATION FAN HAS A FAILURE. BURNING WIRE SMELL IN FLIGHT AT FL350 AND EICAS MSG R RECIR FAN SDR FLAGGED TOMC APPROVAL THIS MEL IS REQUIRED , DUE TO R RECIRCULATION FAN INOP (, R REC SWITCH SET  OFF STIKER INOP WAS APLIED . R RECIRCULATION FAN INOPERATIVE. R RECIRCULATION FAN WAS DEFERRED ,SWITCH SET IN OFF .STIKER INOP APPLIED PARTS UPDATED R/R CABIN AIR RECIRCULATION FAN IAW AMM 21-25-01. OPS CHECK GOOD. PLACARD REMOVED. MFG PN ON - 606622-4 MFG SN ON - 79-1207 M&E SN ON - 1207 M&E PN ON - 76-2126-9-0001 MFG SN OFF - 79-1149 MFG PN OFF - 606622-3 ROTABLE PARTS CHG:TT # 1433237 SN OFF 1149 PN OFF 76-2126-9-0001  FAN, CABIN AIROFF 76-2126-9-0001 1149 ON 76-2126-9-0001 1207

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