SDR CA110824002

Service difficulty report · Fire Loop · Cndair CL6002C10

Difficulty date: August 23, 2011
Submitted: January 23, 2013
Operation: Air carrier
Make and model: Cndair CL6002C10
System (JASC): 2612 · Fire Detection
Part: Fire Loop
Condition: Failed
Location: Nr 2 Nacelle
Stage of operation: NR
How discovered: O
Nature of condition: N
Precautionary procedure: B, A

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

What was found

(CAN) PASSING FL150, MSG WARNING "L BLEED DUCT ". THE 2 ENG BLEEDS CLOSED AUTOMATICALLY AND PRESSURIZATION FAILURE IN CONSEQUENCE. QRH APPLIED AND DESCENT INITIATED TO FL100. UNPRESSURIZED FLIGHT BACK TO AIRPORT OF DEPARTURE. THE QAR/MDC WERE DOWNLOADED ON THE QAR, WE SEE THE LT BLEED CLOSED FOLLOWED 30S AFTER BY THE RT BLEED CLOSURE. THE MDC SHOWS THE SYS WAS IN SINGLE LOOP FOR THIS FLIGHT, MT138 OPEN AND THE SYSTEM WAS IN SINGLE LOOP SYS WITH MT137. TROUBLESHOOTING IN PROGRESS.