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An md-80 first officer reports the operations manual does not address actual function of the battery charger 'off' light on the overhead panel.
| Attributes | |
| ACN | 571346 |
| Time | |
| Date | 200212 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Series (DC-9-80) Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : preflight |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| ASRS Report | 571346 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : dc voltmeter-ammeter other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : engineering procedure contributing factor : manuals contributing factor : briefing |
| Supplementary | |
| Problem Areas | Company Maintenance Human Performance Chart Or Publication Aircraft |
| Primary Problem | Aircraft |
| Situations | |
| Publication | MD-80 Operations Manual |
Narrative:
For reference on tech's knowledge of the lack of an interconnect between the battery charging circuit breaker (the battery charger) and the 'battery charger' light on the overhead annunciator panel. This sel item 10 does not address the lack of the interconnect as discussed in the operations manual red book systems section as far as I can tell. This means to me that the specific problem described in my original report is not correctly identified or discussed. Please respond with whatever information you may have regarding addressing this shortfall in the sel 10 or in the operations manual. Thank you. The battery charging light circuit breaker, if popped does not cause the battery charger light on the overhead annunciator panel to illuminate. Callback conversation with reporter revealed the following information: the reporter stated that maintenance technical services and engineering have never given a clear and concise explanation of the function of the battery charger 'off' light. The reporter said if the three phase circuit breaker feeding power to the battery charger is tripped the battery charger 'off' light does not illuminate. The reporter stated the only way the crew would know the battery was not charging in this condition would be the ammeter or voltmeter not pulsing if switched to this position.
Original NASA ASRS Text
Title: AN MD-80 FO RPTS THE OPS MANUAL DOES NOT ADDRESS ACTUAL FUNCTION OF THE BATTERY CHARGER 'OFF' LIGHT ON THE OVERHEAD PANEL.
Narrative: FOR REFERENCE ON TECH'S KNOWLEDGE OF THE LACK OF AN INTERCONNECT BTWN THE BATTERY CHARGING CB (THE BATTERY CHARGER) AND THE 'BATTERY CHARGER' LIGHT ON THE OVERHEAD ANNUNCIATOR PANEL. THIS SEL ITEM 10 DOES NOT ADDRESS THE LACK OF THE INTERCONNECT AS DISCUSSED IN THE OPS MANUAL RED BOOK SYSTEMS SECTION AS FAR AS I CAN TELL. THIS MEANS TO ME THAT THE SPECIFIC PROB DESCRIBED IN MY ORIGINAL RPT IS NOT CORRECTLY IDENTIFIED OR DISCUSSED. PLEASE RESPOND WITH WHATEVER INFO YOU MAY HAVE REGARDING ADDRESSING THIS SHORTFALL IN THE SEL 10 OR IN THE OPS MANUAL. THANK YOU. THE BATTERY CHARGING LIGHT CB, IF POPPED DOES NOT CAUSE THE BATTERY CHARGER LIGHT ON THE OVERHEAD ANNUNCIATOR PANEL TO ILLUMINATE. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THAT MAINT TECHNICAL SERVICES AND ENGINEERING HAVE NEVER GIVEN A CLR AND CONCISE EXPLANATION OF THE FUNCTION OF THE BATTERY CHARGER 'OFF' LIGHT. THE RPTR SAID IF THE THREE PHASE CB FEEDING POWER TO THE BATTERY CHARGER IS TRIPPED THE BATTERY CHARGER 'OFF' LIGHT DOES NOT ILLUMINATE. THE RPTR STATED THE ONLY WAY THE CREW WOULD KNOW THE BATTERY WAS NOT CHARGING IN THIS CONDITION WOULD BE THE AMMETER OR VOLTMETER NOT PULSING IF SWITCHED TO THIS POS.
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.