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CL65 flight crew has inoperative cabin temperature control and refuses to cycle circuit breakers per maintenance request.
| Attributes | |
| ACN | 572161 |
| Time | |
| Date | 200301 |
| Day | Wed |
| Place | |
| Locale Reference | atc facility : zzz.artcc |
| State Reference | US |
| Altitude | msl single value : 35000 |
| Aircraft 1 | |
| Controlling Facilities | artcc : zzz.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet CL65, Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 572161 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : less severe other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : air conditioning system other flight crewa other flight crewb |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | other |
| Supplementary | |
| Problem Areas | Aircraft Flight Crew Human Performance Maintenance Human Performance |
| Primary Problem | Flight Crew Human Performance |
Narrative:
We were cruising at FL350 when we were unable to increase the cabin temperature. Moc was called and advised of the situation including cruising altitude, tat temperature, duct temperature, etc. Both automatic and manual mode would not work. Moc advised me then to pull a couple circuit breakers in-flight. I advised them that we were at FL350 in-flight. Again I was advised to pull circuit breakers. I advised moc of our company procedure/FARS about resetting circuit breaker. Moc obviously is not aware of this policy/far. This is creating an unsafe situation. I did not pull/reset circuit breakers.
Original NASA ASRS Text
Title: CL65 FLC HAS INOP CABIN TEMP CTL AND REFUSES TO CYCLE CIRCUIT BREAKERS PER MAINT REQUEST.
Narrative: WE WERE CRUISING AT FL350 WHEN WE WERE UNABLE TO INCREASE THE CABIN TEMP. MOC WAS CALLED AND ADVISED OF THE SIT INCLUDING CRUISING ALT, TAT TEMP, DUCT TEMP, ETC. BOTH AUTO AND MANUAL MODE WOULD NOT WORK. MOC ADVISED ME THEN TO PULL A COUPLE CIRCUIT BREAKERS INFLT. I ADVISED THEM THAT WE WERE AT FL350 INFLT. AGAIN I WAS ADVISED TO PULL CIRCUIT BREAKERS. I ADVISED MOC OF OUR COMPANY PROC/FARS ABOUT RESETTING CIRCUIT BREAKER. MOC OBVIOUSLY IS NOT AWARE OF THIS POLICY/FAR. THIS IS CREATING AN UNSAFE SIT. I DID NOT PULL/RESET CIRCUIT BREAKERS.
Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.