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A B737 flight crew tests the values of their aircraft's master caution warning system by resetting an already reset circuit breaker at sju, pr.
| Attributes | |
| ACN | 518098 |
| Time | |
| Date | 200107 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : sju.airport |
| State Reference | PR |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | ground : pushback |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : instrument pilot : multi engine pilot : commercial |
| Experience | flight time last 90 days : 270 flight time total : 6500 flight time type : 2500 |
| ASRS Report | 518098 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper documentation non adherence : company policies non adherence : far |
| Independent Detector | aircraft equipment other aircraft equipment : master caution light other flight crewa other flight crewb |
| Resolutory Action | flight crew : overrode automation |
| Consequence | other |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Flight Crew Human Performance Company Aircraft |
| Primary Problem | Aircraft |
Narrative:
After pushback, master caution light and overhead proximity slat electronics unit light on. On an earlier flight segment, maintenance had reset a circuit breaker in avionics bay to clear the same problem. Quick reaction checklist instructed 'do not take off.' since we were in sju, there was no maintenance to reset circuit breaker. Captain elected to reset the cockpit circuit breakers for proximity slat electronics unit. This cleared the lights. I did not countermand captain's decision to not write up the discrepancy, since the problem was resolved by our action and there were no abnormalities. Captain said he would inform maintenance upon our arrival at hub airport, which he did.
Original NASA ASRS Text
Title: A B737 FLC TESTS THE VALUES OF THEIR ACFT'S MASTER CAUTION WARNING SYS BY RESETTING AN ALREADY RESET CIRCUIT BREAKER AT SJU, PR.
Narrative: AFTER PUSHBACK, MASTER CAUTION LIGHT AND OVERHEAD PROX SLAT ELECTRONICS UNIT LIGHT ON. ON AN EARLIER FLT SEGMENT, MAINT HAD RESET A CIRCUIT BREAKER IN AVIONICS BAY TO CLR THE SAME PROB. QUICK REACTION CHKLIST INSTRUCTED 'DO NOT TAKE OFF.' SINCE WE WERE IN SJU, THERE WAS NO MAINT TO RESET CIRCUIT BREAKER. CAPT ELECTED TO RESET THE COCKPIT CIRCUIT BREAKERS FOR PROX SLAT ELECTRONICS UNIT. THIS CLRED THE LIGHTS. I DID NOT COUNTERMAND CAPT'S DECISION TO NOT WRITE UP THE DISCREPANCY, SINCE THE PROB WAS RESOLVED BY OUR ACTION AND THERE WERE NO ABNORMALITIES. CAPT SAID HE WOULD INFORM MAINT UPON OUR ARR AT HUB ARPT, WHICH HE DID.
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.