B727 in cargo operation had smell in cockpit after takeoff. Returned to land. Air conditioning problem was found. Reporter concerned about effect stress had on remainder of duty day.

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Attributes
ACN	475609
Time
Date	200006
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : lax.airport
State Reference	CA
Altitude	agl single value : 50
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : lax.tower
Operator	common carrier : air carrier
Make Model Name	B727-100
Operating Under FAR Part	Part 121
Flight Phase	climbout : initial
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : flight engineer pilot : cfi pilot : commercial
Experience	flight time last 90 days : 180 flight time total : 3200 flight time type : 2100
ASRS Report	475609
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	other anomaly other anomaly
Independent Detector	other flight crewa
Resolutory Action	flight crew : declared emergency other
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

During takeoff from lax the crew smelled burning rubber in the cockpit. We put on our oxygen masks, declared an emergency and returned to the field. The landing was uneventful and there was no indication we had a fire. The mechanics think it was something in the pressurization system. I think that we did everything correctly. After getting a new airplane we continued our day which lasted a total of 14 hours. At the time I thought I was rested enough for the following trips, but looking back I think the emergency really drained me and I should have had some rest before flying a long day.

Original NASA ASRS Text

Title: B727 IN CARGO OP HAD SMELL IN COCKPIT AFTER TKOF. RETURNED TO LAND. AIR CONDITIONING PROB WAS FOUND. RPTR CONCERNED ABOUT EFFECT STRESS HAD ON REMAINDER OF DUTY DAY.

Narrative: DURING TKOF FROM LAX THE CREW SMELLED BURNING RUBBER IN THE COCKPIT. WE PUT ON OUR OXYGEN MASKS, DECLARED AN EMER AND RETURNED TO THE FIELD. THE LNDG WAS UNEVENTFUL AND THERE WAS NO INDICATION WE HAD A FIRE. THE MECHS THINK IT WAS SOMETHING IN THE PRESSURIZATION SYS. I THINK THAT WE DID EVERYTHING CORRECTLY. AFTER GETTING A NEW AIRPLANE WE CONTINUED OUR DAY WHICH LASTED A TOTAL OF 14 HRS. AT THE TIME I THOUGHT I WAS RESTED ENOUGH FOR THE FOLLOWING TRIPS, BUT LOOKING BACK I THINK THE EMER REALLY DRAINED ME AND I SHOULD HAVE HAD SOME REST BEFORE FLYING A LONG DAY.

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.