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An MD82 captain reports, on climb at FL260, he had a left CSD warning. With maintenance approval, the deferred APU was operated. Left CSD disconnected.
| Attributes | |
| ACN | 614821 |
| Time | |
| Date | 200404 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | msl single value : 29000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zfw.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | MD-82 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 614821 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : gen drive temp indication other flight crewa other flight crewb |
| Resolutory Action | flight crew : diverted to another airport |
| Consequence | other other |
| Supplementary | |
| Problem Areas | Weather Aircraft Flight Crew Human Performance |
| Primary Problem | Aircraft |
Narrative:
During climb out departing ZZZ, master caution light flickered briefly several times (never on steady) noted the 'left CSD oil pressure low' flickered simultaneously with master caution light. Checked left CSD temperature gauge outlet temperature 'pegged' high (180+ degrees) -- well above red line. QRH procedure said to disconnect CSD. Captain elected to continue operations because APU was placarded inoperative and that would have caused single generator operations with overcast WX conditions at ZZZ. Informed ZZZ center of situation and cleared to hold over ZZZ1 or at FL260. In the meantime, contacted ZZZ dispatch desk. She agreed with our decision to return to ZZZ and she also phone patched us with maintenance controller. Maintenance controller cleared us to start placarded APU. APU worked fine. By this time CSD temperature had decreased to caution range and continued into normal operations range. With maintenance controller concurrence, we disconnected left CSD per QRH procedures. Since there was a history of APU problems, the decision to return to ZZZ was reconfirmed, even though we now had 2 operating generators.
Original NASA ASRS Text
Title: AN MD82 CAPT RPTS, ON CLB AT FL260, HE HAD A L CSD WARNING. WITH MAINT APPROVAL, THE DEFERRED APU WAS OPERATED. L CSD DISCONNECTED.
Narrative: DURING CLBOUT DEPARTING ZZZ, MASTER CAUTION LIGHT FLICKERED BRIEFLY SEVERAL TIMES (NEVER ON STEADY) NOTED THE 'L CSD OIL PRESSURE LOW' FLICKERED SIMULTANEOUSLY WITH MASTER CAUTION LIGHT. CHKED L CSD TEMP GAUGE OUTLET TEMP 'PEGGED' HIGH (180+ DEGS) -- WELL ABOVE RED LINE. QRH PROC SAID TO DISCONNECT CSD. CAPT ELECTED TO CONTINUE OPS BECAUSE APU WAS PLACARDED INOP AND THAT WOULD HAVE CAUSED SINGLE GENERATOR OPS WITH OVCST WX CONDITIONS AT ZZZ. INFORMED ZZZ CTR OF SIT AND CLRED TO HOLD OVER ZZZ1 OR AT FL260. IN THE MEANTIME, CONTACTED ZZZ DISPATCH DESK. SHE AGREED WITH OUR DECISION TO RETURN TO ZZZ AND SHE ALSO PHONE PATCHED US WITH MAINT CTLR. MAINT CTLR CLRED US TO START PLACARDED APU. APU WORKED FINE. BY THIS TIME CSD TEMP HAD DECREASED TO CAUTION RANGE AND CONTINUED INTO NORMAL OPS RANGE. WITH MAINT CTLR CONCURRENCE, WE DISCONNECTED L CSD PER QRH PROCS. SINCE THERE WAS A HISTORY OF APU PROBS, THE DECISION TO RETURN TO ZZZ WAS RECONFIRMED, EVEN THOUGH WE NOW HAD 2 OPERATING GENERATORS.
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.