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A fokker 100 in climb at 9000 ft with the left pack deferred inoperative and using only the right pack was unable to control the cabin temperature in automatic or manual. Returned to the field.
| Attributes | |
| ACN | 395792 |
| Time | |
| Date | 199802 |
| Day | Sat |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : clt |
| State Reference | NC |
| Altitude | msl bound lower : 9000 msl bound upper : 9000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : clt artcc : zme |
| Operator | common carrier : air carrier |
| Make Model Name | Fokker 100 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | climbout : intermediate altitude other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 10000 |
| ASRS Report | 395792 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 11000 flight time type : 1800 |
| ASRS Report | 395100 |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
Shortly after takeoff, the cabin began to get very hot. The right pack was in automatic-full cold (the left pack was on MEL), but the cabin supply was about 100 degrees F and climbing. The right pack was switched to manual full cold, but the cabin supply temperature was still climbing, and at 134 degrees F (cabin supply temperature), we decided to return to the field since we were unable to stop the rising temperature. We were approximately 5-10 mi east of clt at 9000 ft MSL. Return to clt was precautionary. Callback conversation with reporter revealed the following information: the reporter stated that no information was available from maintenance on what component failed or maintenance action was taken to correct both packs. The reporter said the fokker 100 has a few 'quirks' and one of these is cabin and cockpit cooling.
Original NASA ASRS Text
Title: A FOKKER 100 IN CLB AT 9000 FT WITH THE L PACK DEFERRED INOP AND USING ONLY THE R PACK WAS UNABLE TO CTL THE CABIN TEMP IN AUTO OR MANUAL. RETURNED TO THE FIELD.
Narrative: SHORTLY AFTER TKOF, THE CABIN BEGAN TO GET VERY HOT. THE R PACK WAS IN AUTO-FULL COLD (THE L PACK WAS ON MEL), BUT THE CABIN SUPPLY WAS ABOUT 100 DEGS F AND CLBING. THE R PACK WAS SWITCHED TO MANUAL FULL COLD, BUT THE CABIN SUPPLY TEMP WAS STILL CLBING, AND AT 134 DEGS F (CABIN SUPPLY TEMP), WE DECIDED TO RETURN TO THE FIELD SINCE WE WERE UNABLE TO STOP THE RISING TEMP. WE WERE APPROX 5-10 MI E OF CLT AT 9000 FT MSL. RETURN TO CLT WAS PRECAUTIONARY. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THAT NO INFO WAS AVAILABLE FROM MAINT ON WHAT COMPONENT FAILED OR MAINT ACTION WAS TAKEN TO CORRECT BOTH PACKS. THE RPTR SAID THE FOKKER 100 HAS A FEW 'QUIRKS' AND ONE OF THESE IS CABIN AND COCKPIT COOLING.
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.