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A first officer reports they departed with their crj-200 APU deferred due to the electronic control unit (ecu) was completely fried. Upon landing APU inlet door was found in the open position. Maintenance raised concerns about the fuselage structural integrity at the inlet door area and APU turbine windspeed exceeding 300 knots. Aircraft flew at approximately 330 knots.
| Attributes | |
| ACN | 876203 |
| Time | |
| Date | 201003 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Regional Jet 200 ER/LR (CRJ200) |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Component | |
| Aircraft Component | APU Controls |
| Person 1 | |
| Function | First Officer Pilot Flying |
| Qualification | Flight Crew Commercial |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Procedural MEL Deviation - Procedural Published Material / Policy |
Narrative:
While at the gate; with passengers loaded and APU running; we received a right pack overtemp caution. We disabled the pack and called for maintenance. Shortly before maintenance showed up; the APU shut down. After several minutes the mechanics stated that the APU's electronic control unit (ecu) was completely fried; and they were going to defer it. I believe the mechanic stated he was going to wire the door shut. The mechanics returned shortly; and informed us the APU was deferred and we were good to go. After getting a new release; we flew to our destination.after landing late; we informed the next crew of what had happened in ZZZ. The next first officer noticed on his walkaround that the APU door was now open. Maintenance did not know if the door was secured before leaving ZZZ; so they were concerned about the airplane's structural integrity.we should have completed a walkaround after maintenance performed their deferral; but due to time pressure; and the fact that the only thing that had changed was the APU door; we left as soon as we could; without a walkaround. The MEL procedures for flight crew with an APU deferral does not state to verify the door is closed; but possibly should.
Original NASA ASRS Text
Title: A First Officer reports they departed with their CRJ-200 APU deferred due to the Electronic Control Unit (ECU) was completely fried. Upon landing APU Inlet door was found in the open position. Maintenance raised concerns about the fuselage structural integrity at the Inlet door area and APU Turbine windspeed exceeding 300 knots. Aircraft flew at approximately 330 knots.
Narrative: While at the gate; with passengers loaded and APU running; we received a R PACK OVERTEMP caution. We disabled the pack and called for Maintenance. Shortly before Maintenance showed up; the APU shut down. After several minutes the Mechanics stated that the APU's Electronic Control Unit (ECU) was completely fried; and they were going to defer it. I believe the Mechanic stated he was going to wire the door shut. The Mechanics returned shortly; and informed us the APU was deferred and we were good to go. After getting a new release; we flew to our destination.After landing late; we informed the next crew of what had happened in ZZZ. The next First Officer noticed on his walkaround that the APU door was now open. Maintenance did not know if the door was secured before leaving ZZZ; so they were concerned about the airplane's structural integrity.We should have completed a walkaround after Maintenance performed their deferral; but due to time pressure; and the fact that the only thing that had changed was the APU door; we left as soon as we could; without a walkaround. The MEL procedures for flight crew with an APU deferral does not state to verify the door is closed; but possibly should.
Data retrieved from NASA's ASRS site as of April 2012 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.