# SDR UIEA2026060300427

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 3, 2026
- Submitted: June 4, 2026
- Operation: Air carrier
- Aircraft: [N486MC](https://openairdocs.org/aircraft/N486MC), registered now
- Make and model: Boeing 747-45EF
- Registry model: [Boeing 747-45EF](https://openairdocs.org/model/boeing-747-45ef) (OpenAirDocs)
- Aircraft serial: 30608
- Aircraft time: 110,471 hours, 19,603 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Sleeve
- Condition: Wrong Part
- Location: Zone 100
- Stage of operation: CL
- How discovered: O
- Nature of condition: W, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2026060300427

## Discrepancy

ON CLIMB OUT, EQUIPMENT COOLING EICAS MESSAGE APPEARED 16 MIN AFTER T/O ABOVE FL250 IN CLIMB.  FOUND DISCONNECT DUCT LINE AT BS 1100 DUE TO WRONG SLEEVE INSTALLED. REMOVED AND REPLACED WITH NEW SLEEVE AND RECONNECTED DUCT LINE, THEN OPS CHECKED NORMAL IAW AMM 21-58-00/501</P>)

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