# SDR QXEA200500064

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 10, 2005
- Submitted: January 13, 2005
- Operation: Air carrier
- Aircraft: N412QX
- Make and model: Bombdr DHC8401
- Aircraft serial: 4059
- Aircraft time: 7,243 hours, 7,786 cycles
- System (JASC): [2610 · Detection System](https://openairdocs.org/jasc/2610)
- Part: Switch
- Condition: Malfunctioned
- Location: Leak Overtemp
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QXEA200500064

## Discrepancy

NR 1 BLEED HOT CAUTION ILLUMINATED ON TAKEOFF ROTATION. NR 1 BLEED SELECTED AFT PER CHECKLIST. LIGHT WENT OUT WHEN NR 1 BLEED SELECTED OFF. THERE WAS AN UNUSUALLY HOT SMELL/ODOR NOTED TOWARD LATER PORTION OF TAKEOFF ROLL. MAINTENANCE REPLACED NACELLE DUCT LEAK OVERTEMP SWITCH. GROUND RAN NR 1 ENGINE, NO DEFECTS NOTED. AIRCRAFT RETURNED TO SERVICE.

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