# SDR UIEA2024061900555

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 19, 2024
- Submitted: June 20, 2024
- Operation: Air carrier
- Aircraft: [N850GT](https://openairdocs.org/aircraft/N850GT), registered now
- Make and model: Boeing 747-87UF
- Registry model: [Boeing 747-87UF](https://openairdocs.org/model/boeing-747-87uf) (OpenAirDocs)
- Aircraft serial: 37570
- Aircraft time: 48,744 hours, 9,120 cycles
- System (JASC): [2600 · Fire Protection System](https://openairdocs.org/jasc/2600)
- Part: Switch
- Part number: MS250893H
- Condition: Failed
- Stage of operation: TO
- How discovered: O
- Nature of condition: J
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2024061900555

## Discrepancy

REJECTED TAKE OFF AT 30/40 KNOTS DUE TO BLEED DUCT LEAK R LOOP A FAIL, APU DUCT LEAK AND WARNING MESSAGE SPOILER CONFIGURATION(<P>REMOVED AND REPLACED DAMAGED APU BLEED AIR DUCT SEAL AT WING STATION RH 1010 AS PER AMM 36-11-01. OPS AND LEAK CHECK GOOD. REPLACED APU DUCT OVERHEAT RESET SWITCH IAW WDM 49-52-21. REPLACED OVERHEAT RELAY R686 PER WDM 49-52-21 AND REPLACED S-271 SWITCH IAW WDM 27-62-11. OPS AND LEAKS CHECKS GOOD. </P>)

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