|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||1201 To 1800|
|Locale Reference||airport : mia|
|Altitude||agl bound lower : 0|
agl bound upper : 0
|Operator||common carrier : air carrier|
|Make Model Name||B767 Undifferentiated or Other Model|
|Operating Under FAR Part||Part 121|
|Navigation In Use||Other |
|Flight Phase||climbout : takeoff|
|Affiliation||company : air carrier|
|Function||flight crew : captain|
oversight : pic
|Qualification||pilot : atp|
|Experience||flight time last 90 days : 75|
flight time total : 9000
flight time type : 700
|Affiliation||company : air carrier|
|Function||flight crew : first officer|
|Qualification||pilot : instrument|
pilot : commercial
|Anomaly||aircraft equipment problem : critical|
other anomaly other
|Independent Detector||other flight crewa|
|Resolutory Action||flight crew : declared emergency|
flight crew : overcame equipment problem
Aborted takeoff on runway 9L due to loss of left generator. Aircraft had significant recent history of electrical malfunctions. Attempted to notify tower but could not transmit to anyone. After clearing the runway, much confusion as to the inability to communicate. Also had to deal with restoring full electrical power. After about 10 mins on the taxiway adjacent to the runway where we had aborted we finally realized that the aborted takeoff at 100 KTS with maximum braking resulted in first officer kit bag sliding forward right into microphone button. The button was being held down by first officer kit bag. Attempts by transmitting on captain side also failed as tower frequency was being blocked by first officer microphone along with any other frequency. After closer examination I believe there is an urgent need to relocate all mikes on the B767 models where the microphone is located. It is perfectly aligned with kit bag edges where sudden stops will result in loss of communications. Had we needed immediate rescue equipment we would have been unable to get any assistance during a critical time. Fortunately this incident did not warrant assistance. This is a real safety concern and needs immediate action. Callback conversation with reporter revealed the following information: reporter captain confirmed the aircraft type as B767-200 and one of the earlier models which have the hand mikes located in brackets in front of the flight kit storage spot. And, depending on the flight kit flap opening position can result in this type of situation. The first officer's kit bag flap opened outboard so was facing the side wall and that came in contact with the hand microphone transmit button holding it down until the flight crew discovered it. The flight crew was able to restore the generator, but returned to the gate where the aircraft was removed from service. Reporter says the aircraft had a history of many electrical problems. Reporter also provided flight hour statistics which were not on the original report. Reporter had sent reports to his company and had not yet had feedback.
Original NASA ASRS Text
Title: B767 ON TKOF ROLL LOST L GENERATOR, FLC ABORTED TKOF. THE SUDDEN DECELERATION OF THE ABORT SHIFTED THE FO'S KIT BAG INTO THE HAND MIKE WHICH IS HELD ON THE PANEL IN FRONT OF THE KIT BAG STORAGE. THE MIKE BUTTON WAS DEPRESSED THUS DISABLING COM WITH TWR.
Narrative: ABORTED TKOF ON RWY 9L DUE TO LOSS OF L GENERATOR. ACFT HAD SIGNIFICANT RECENT HISTORY OF ELECTRICAL MALFUNCTIONS. ATTEMPTED TO NOTIFY TWR BUT COULD NOT XMIT TO ANYONE. AFTER CLRING THE RWY, MUCH CONFUSION AS TO THE INABILITY TO COMMUNICATE. ALSO HAD TO DEAL WITH RESTORING FULL ELECTRICAL PWR. AFTER ABOUT 10 MINS ON THE TXWY ADJACENT TO THE RWY WHERE WE HAD ABORTED WE FINALLY REALIZED THAT THE ABORTED TKOF AT 100 KTS WITH MAX BRAKING RESULTED IN FO KIT BAG SLIDING FORWARD RIGHT INTO MIKE BUTTON. THE BUTTON WAS BEING HELD DOWN BY FO KIT BAG. ATTEMPTS BY XMITTING ON CAPT SIDE ALSO FAILED AS TWR FREQ WAS BEING BLOCKED BY FO MIKE ALONG WITH ANY OTHER FREQ. AFTER CLOSER EXAMINATION I BELIEVE THERE IS AN URGENT NEED TO RELOCATE ALL MIKES ON THE B767 MODELS WHERE THE MIKE IS LOCATED. IT IS PERFECTLY ALIGNED WITH KIT BAG EDGES WHERE SUDDEN STOPS WILL RESULT IN LOSS OF COMS. HAD WE NEEDED IMMEDIATE RESCUE EQUIP WE WOULD HAVE BEEN UNABLE TO GET ANY ASSISTANCE DURING A CRITICAL TIME. FORTUNATELY THIS INCIDENT DID NOT WARRANT ASSISTANCE. THIS IS A REAL SAFETY CONCERN AND NEEDS IMMEDIATE ACTION. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR CAPT CONFIRMED THE ACFT TYPE AS B767-200 AND ONE OF THE EARLIER MODELS WHICH HAVE THE HAND MIKES LOCATED IN BRACKETS IN FRONT OF THE FLT KIT STORAGE SPOT. AND, DEPENDING ON THE FLT KIT FLAP OPENING POS CAN RESULT IN THIS TYPE OF SIT. THE FO'S KIT BAG FLAP OPENED OUTBOARD SO WAS FACING THE SIDE WALL AND THAT CAME IN CONTACT WITH THE HAND MIKE XMIT BUTTON HOLDING IT DOWN UNTIL THE FLC DISCOVERED IT. THE FLC WAS ABLE TO RESTORE THE GENERATOR, BUT RETURNED TO THE GATE WHERE THE ACFT WAS REMOVED FROM SVC. RPTR SAYS THE ACFT HAD A HISTORY OF MANY ELECTRICAL PROBS. RPTR ALSO PROVIDED FLT HR STATISTICS WHICH WERE NOT ON THE ORIGINAL RPT. RPTR HAD SENT RPTS TO HIS COMPANY AND HAD NOT YET HAD FEEDBACK.
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.