SDR CA991230020

Service difficulty report · Line · Cndair CL6012A12

Difficulty date: December 9, 1999
Submitted: January 19, 2001
Operation: Air carrier
Make and model: Cndair CL6012A12
Aircraft time: 10,775 hours
Engine: Ge CF341A
System (JASC): 2133 · Pressure Regulator/Outflow Valve
Part: Line
Condition: Misinstalled
Location: Outflow Valve
Stage of operation: IN
How discovered: V
Nature of condition: W
Precautionary procedure: K

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

What was found

(CAN) DURING CLIMB AT APPROX. 5000 FT AUTO PRESSURE WAS NOTICED NOT TO BE WORKING AS CABIN ALT WAS CLIMBING AT 7500 FT. MANUAL PRESSURIZATION WAS SELECTED AND THE RATE OF CLIMB IN THE CABIN WAS VERY HIGH AND THE SPEED BARBER POLE ON THE CAPTAINS ASI DROPPED 30 KNOTS CAUSING A SPEED ADVANCE. FLIGHT CONTINUED UNPRESSURIZED AND A/C LANDED AT HOME BASE. STATIC AND PRESS LINES ON WERE FOUND CROSSED ON OUTFLOW VALVE.