Burned rubber smell on takeoff. On descent gear warning horn and gear unsafe light illuminated.

Attributes
ACN	121669
Time
Date	198908
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : bhm
State Reference	AL
Altitude	agl bound lower : 0 agl bound upper : 1000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : atl tower : bhm
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	climbout : takeoff descent : approach landing other
Route In Use	enroute : direct
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : flight engineer pilot : commercial pilot : atp pilot : private
Experience	flight time last 90 days : 180 flight time total : 3200 flight time type : 1200
ASRS Report	121669
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : less severe
Independent Detector	other flight crewa
Resolutory Action	flight crew : declared emergency none taken : unable
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

Crew smelled burned rubber on takeoff rotation out of atl. Captain asked departure control to call atl tower and have them check the runway for possible blown tire. Departure relayed that the runway was clear. On descent into bhm, landing gear warning horn sounded and red gear unsafe lights illuminated when the power was retarded and could be extinguished when horn cut out lever was pulled but would reoccur when the lever was released. Gear was lowered on approach, all indications were normal - gear down and locked. As a precaution, captain asked tower to visually check the gear and to have the emergency equipment standing by. Tower confirmed that the landing gear looked ok, and a normal landing was performed. Corrective maintenance was performed in bhm. Callback conversation with reporter revealed the following: reporter states no indication of why crew smelled burned rubber. Repairs made were to landing gear accessory box, but reporter not sure of just exactly what the problem was.

Original NASA ASRS Text

Title: BURNED RUBBER SMELL ON TKOF. ON DESCENT GEAR WARNING HORN AND GEAR UNSAFE LIGHT ILLUMINATED.

Narrative: CREW SMELLED BURNED RUBBER ON TKOF ROTATION OUT OF ATL. CAPT ASKED DEP CTL TO CALL ATL TWR AND HAVE THEM CHECK THE RWY FOR POSSIBLE BLOWN TIRE. DEP RELAYED THAT THE RWY WAS CLEAR. ON DSCNT INTO BHM, LNDG GEAR WARNING HORN SOUNDED AND RED GEAR UNSAFE LIGHTS ILLUMINATED WHEN THE POWER WAS RETARDED AND COULD BE EXTINGUISHED WHEN HORN CUT OUT LEVER WAS PULLED BUT WOULD REOCCUR WHEN THE LEVER WAS RELEASED. GEAR WAS LOWERED ON APCH, ALL INDICATIONS WERE NORMAL - GEAR DOWN AND LOCKED. AS A PRECAUTION, CAPT ASKED TWR TO VISUALLY CHECK THE GEAR AND TO HAVE THE EMER EQUIPMENT STANDING BY. TWR CONFIRMED THAT THE LNDG GEAR LOOKED OK, AND A NORMAL LNDG WAS PERFORMED. CORRECTIVE MAINT WAS PERFORMED IN BHM. CALLBACK CONVERSATION WITH REPORTER REVEALED THE FOLLOWING: REPORTER STATES NO INDICATION OF WHY CREW SMELLED BURNED RUBBER. REPAIRS MADE WERE TO LNDG GEAR ACCESSORY BOX, BUT REPORTER NOT SURE OF JUST EXACTLY WHAT THE PROBLEM WAS.

Data retrieved from NASA's ASRS site as of August 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.