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An EMB140 in climb at 9000 ft had #1 engine bleed overheat warning. Closed bleed valve. Bleed overheat warning went away. Immediately got #1 control display unit bus fail warning. Returned to departure airport.
| Attributes | |
| ACN | 689361 |
| Time | |
| Date | 200603 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Environment | |
| Weather Elements | Windshear Ice |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | EMB ERJ 140 ER&LR |
| Operating Under FAR Part | Part 121 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| ASRS Report | 689361 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | aircraft equipment other aircraft equipment : bleed ovht warning other flight crewa other flight crewb |
| Resolutory Action | other |
| Consequence | other |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Chart Or Publication Aircraft |
| Primary Problem | Aircraft |
Narrative:
Climbing out of about 9000 ft at ZZZ1 on our way to ZZZ2; we received a 'bleed 1 overtemp' indication. We ran the checklist which had us close the #1 engine bleed. The overtemp indication went away. Immediately after that the #1 CDU screen began to malfunction and show just a bunch of numbers and letters scattered and jumping about on the screen. It then failed. It then showed CDU data bus fail on its screen. We were not sure if this had anything to do with the bleed overtemp. To be safe; and since we were so close to ZZZ1 and since we were scheduled to fly to ZZZ3 after ZZZ2; we decided to return to ZZZ1.
Original NASA ASRS Text
Title: AN EMB140 IN CLB AT 9000 FT HAD #1 ENG BLEED OVERHEAT WARNING. CLOSED BLEED VALVE. BLEED OVERHEAT WARNING WENT AWAY. IMMEDIATELY GOT #1 CTL DISPLAY UNIT BUS FAIL WARNING. RETURNED TO DEP ARPT.
Narrative: CLBING OUT OF ABOUT 9000 FT AT ZZZ1 ON OUR WAY TO ZZZ2; WE RECEIVED A 'BLEED 1 OVERTEMP' INDICATION. WE RAN THE CHKLIST WHICH HAD US CLOSE THE #1 ENG BLEED. THE OVERTEMP INDICATION WENT AWAY. IMMEDIATELY AFTER THAT THE #1 CDU SCREEN BEGAN TO MALFUNCTION AND SHOW JUST A BUNCH OF NUMBERS AND LETTERS SCATTERED AND JUMPING ABOUT ON THE SCREEN. IT THEN FAILED. IT THEN SHOWED CDU DATA BUS FAIL ON ITS SCREEN. WE WERE NOT SURE IF THIS HAD ANYTHING TO DO WITH THE BLEED OVERTEMP. TO BE SAFE; AND SINCE WE WERE SO CLOSE TO ZZZ1 AND SINCE WE WERE SCHEDULED TO FLY TO ZZZ3 AFTER ZZZ2; WE DECIDED TO RETURN TO ZZZ1.
Data retrieved from NASA's ASRS site as of January 2009 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.