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SDR 6CBA20141123139

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Service difficulty report · Relay · Pilats PC1247

FAA SDR system

Difficulty date
November 23, 2014
Submitted
December 1, 2014
Operation
Air carrier
Aircraft
N340AF
Make and model
Pilats PC1247
Aircraft serial
1340
Aircraft time
2,198 hours, 2,172 cycles
Engine
Pwa PT6A67
Engine time
2,198 hours, 2,172 cycles
Propeller
Hartzl HCE4A3D
System (JASC)
2150 · Cabin Cooling System
Part
Relay
Condition
Sticking
Location
Ac System
Stage of operation
DE
How discovered
O
Nature of condition
B
Precautionary procedure
O

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

What was found

ACS LOW INFLOW INFLIGHT BURNING ODOR COMING FROM VENTS. THE ACS SYS & COMPONENTS WERE INSPECTED WITH NO DEFECTS FOUND. A FUNCTIONAL & OPERATIONAL TEST OF THE TEMPERATURE CONDITIONING & ACS & AUXILIARY HEATING SYSTEMS WAS PERFORMED IAW 12-B-71-00-00-00A-903S-A, CHECKED GOOD. OPERATED SYSTEMS FOR AN ADDITIONAL 30 MIN FROM FULL HEAT TO FULL COLD WITH ACS IN AUTO & INHIBIT NO SMELL DETECTED. THE ACMF FAULT LOGS WERE DOWNLOADED TO SHOW FAULT CODE 21313A07CPA LOW CABIN INFLOW, CAB PRESS CHAN AN EVALUATION SUSPECTED FAULT WAS DUE TO DEFECTIVE ECS CONTROLLER. THE ECS CONTROLLER PN 6130C000-002 WAS R & R IAW 12-B-21-60-01-00A-920AA. THE UNDER FLOOR HEATING FAN WAS FOUND TO RUN CONTINUOUSLY DUE TO STICKING RELAY K162A2. THE RELAY PN 974.20.01.214 IAW WDM 91-10-02. THE ACS & ECS SYS OPERATIONS CHECKED GOOD IAW 12-B-71-00-00-00A-903S-A.