SDR QXEA200701239

Service difficulty report · Switch · Bombdr DHC8402

Difficulty date: August 4, 2007
Submitted: August 6, 2007
Operation: Air carrier
Aircraft: N431QX
Make and model: Bombdr DHC8402
Aircraft serial: 4164
Aircraft time: 31 hours, 24 cycles
System (JASC): 3610 · Pneumatic Distribution System
Part: Switch
Condition: Malfunctioned
Location: Overtemp
Stage of operation: CR
How discovered: O
Nature of condition: J
Precautionary procedure: O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

SEA FLIGHT NR 2393: NR 1 BLEED HOT CAUTION LIGHT ILLUMINATED WHILE IN CRUISE AT 10,000. ACCOMPLISHED NR 1 BLEED HOT CAUTION CHECKLIST AND ASSOCIATED RAM VENTILATION CHECKLIST. NR 1 BLEED HOT CAUTION LIGHT REMAINED ILLUMINATED FOR DURATION OF FLIGHT AND ALL GROUND UPS. MAINTENANCE REMOVED AND REPLACED NR 1 BLEED AIR OVERTEMP SWITCH IAW Q400 36-11-16, PAGES 401-504. FUNCTIONAL CHECK GOOD. FAULTS CLEARED AND DID NOT REOCCUR. AIRCRAFT RETURNED TO SERVICE.