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A B757-200 on takeoff rotation had electrical overheat smell in cockpit and at mid cabin. Declared emergency and diverted. Cause unknown.
| Attributes | |
| ACN | 562460 |
| Time | |
| Date | 200210 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : dfw.airport |
| State Reference | TX |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : dfw.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | climbout : takeoff climbout : initial ground : takeoff roll |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 562460 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly |
| Independent Detector | other flight crewa other flight crewb other other : person 3 |
| Resolutory Action | flight crew : diverted to another airport flight crew : declared emergency flight crew : landed in emergency condition |
| Consequence | other other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
At takeoff rotation, we smelled electrical smoke in the cockpit. I called the cabin and was informed that there was no smell forward, but passenger and flight attendants smelled smoke mid cabin. We declared an emergency and requested equipment. We ran the appropriate checklists and landed without incident. The smoke was not present after touchdown. Callback conversation with reporter revealed the following information: the reporter stated the cause of the electrical burning odor was not released by maintenance to the flight crew. The reporter said there was actually no smoke involved, just the electrical overheat smell in the cockpit and at mid cabin. The reporter stated it must be a circuit activated by the ground shift circuitry as it started at rotation and was gone after landing.
Original NASA ASRS Text
Title: A B757-200 ON TKOF ROTATION HAD ELECTRICAL OVERHEAT SMELL IN COCKPIT AND AT MID CABIN. DECLARED EMER AND DIVERTED. CAUSE UNKNOWN.
Narrative: AT TKOF ROTATION, WE SMELLED ELECTRICAL SMOKE IN THE COCKPIT. I CALLED THE CABIN AND WAS INFORMED THAT THERE WAS NO SMELL FORWARD, BUT PAX AND FLT ATTENDANTS SMELLED SMOKE MID CABIN. WE DECLARED AN EMER AND REQUESTED EQUIP. WE RAN THE APPROPRIATE CHKLISTS AND LANDED WITHOUT INCIDENT. THE SMOKE WAS NOT PRESENT AFTER TOUCHDOWN. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE CAUSE OF THE ELECTRICAL BURNING ODOR WAS NOT RELEASED BY MAINT TO THE FLC. THE RPTR SAID THERE WAS ACTUALLY NO SMOKE INVOLVED, JUST THE ELECTRICAL OVERHEAT SMELL IN THE COCKPIT AND AT MID CABIN. THE RPTR STATED IT MUST BE A CIRCUIT ACTIVATED BY THE GND SHIFT CIRCUITRY AS IT STARTED AT ROTATION AND WAS GONE AFTER LNDG.
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.