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An air carrier medium large transport had an aircraft equipment problem both generators dropped off line for unknown cause.
| Attributes | |
| ACN | 356980 |
| Time | |
| Date | 199612 |
| Day | Tue |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : rbv airport : jfk |
| State Reference | NJ |
| Altitude | msl bound lower : 31000 msl bound upper : 31000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zny |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | cruise other other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Experience | flight time last 90 days : 200 flight time total : 3000 flight time type : 232 |
| ASRS Report | 356980 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 230 flight time total : 8500 flight time type : 290 |
| ASRS Report | 356798 |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : declared emergency none taken : anomaly accepted other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
Narrative:
FL310 level cruise, light chop and occasional moderate turbulence in VMC. Both generators dropped off-line. Crew initiated emergency checklist and declared emergency. Generators would not reset. Descent to FL250 was initiated and cleared direct to jfk. Subsequent vectors and descent to join localizer runway 4R at jfk. APU started passing FL230, APU electrics were available passing 15000 ft. Right bus restored (partial) after numerous attempts. Elected 15 degree flaps landing at 103000 pounds. Landing and rollout uneventful. Aircraft came to stop about 4000-5000 ft from approach end. Fire crews determined ok to taxi and follow me. Vehicle requested for taxi to gate as a result of suspected low battery condition.
Original NASA ASRS Text
Title: AN ACR MLG HAD AN ACFT EQUIP PROB BOTH GENERATORS DROPPED OFF LINE FOR UNKNOWN CAUSE.
Narrative: FL310 LEVEL CRUISE, LIGHT CHOP AND OCCASIONAL MODERATE TURB IN VMC. BOTH GENERATORS DROPPED OFF-LINE. CREW INITIATED EMER CHKLIST AND DECLARED EMER. GENERATORS WOULD NOT RESET. DSCNT TO FL250 WAS INITIATED AND CLRED DIRECT TO JFK. SUBSEQUENT VECTORS AND DSCNT TO JOIN LOC RWY 4R AT JFK. APU STARTED PASSING FL230, APU ELECTRICS WERE AVAILABLE PASSING 15000 FT. R BUS RESTORED (PARTIAL) AFTER NUMEROUS ATTEMPTS. ELECTED 15 DEG FLAPS LNDG AT 103000 LBS. LNDG AND ROLLOUT UNEVENTFUL. ACFT CAME TO STOP ABOUT 4000-5000 FT FROM APCH END. FIRE CREWS DETERMINED OK TO TAXI AND FOLLOW ME. VEHICLE REQUESTED FOR TAXI TO GATE AS A RESULT OF SUSPECTED LOW BATTERY CONDITION.
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.