A beech 1900 flight crew had smoke in the cockpit while taxiing at mli.

Attributes
ACN	453385
Time
Date	199910
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : mli.airport
State Reference	IL
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Beech 1900
Operating Under FAR Part	Part 135
Flight Phase	ground : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 100 flight time total : 3000 flight time type : 1500
ASRS Report	453385
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : less severe other anomaly
Independent Detector	other flight crewa other flight crewb
Resolutory Action	other
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Everything was normal until right engine start, the N1 stabilized at 36.7 indicating a hung start. At that time we aborted the start. All itt limits were complied with. We then started the time to comply with right start cool-down limitations. While we were waiting for the right starter to cool, we attempted a left engine start which resulted in a normal start. After the appropriate time we attempted a xstart to the right engine which resulted in a normal start. After completing the 'before takeoff to the line' checklist, we contacted ground for taxi and went about 100 yards from the gate when we noticed smoke in the cockpit. We contacted ground and returned to the gate requesting crash fire rescue equipment. At the gate we expeditiously unloaded the passenger through the main cabin door and no passenger were injured. The end result was determined by maintenance who determined that during the hung start the air flow was insufficient to seal the engine case allowing oil to enter the environmental system where it was burned and entered the cabin.

Original NASA ASRS Text

Title: A BEECH 1900 FLC HAD SMOKE IN THE COCKPIT WHILE TAXIING AT MLI.

Narrative: EVERYTHING WAS NORMAL UNTIL R ENG START, THE N1 STABILIZED AT 36.7 INDICATING A HUNG START. AT THAT TIME WE ABORTED THE START. ALL ITT LIMITS WERE COMPLIED WITH. WE THEN STARTED THE TIME TO COMPLY WITH R START COOL-DOWN LIMITATIONS. WHILE WE WERE WAITING FOR THE R STARTER TO COOL, WE ATTEMPTED A L ENG START WHICH RESULTED IN A NORMAL START. AFTER THE APPROPRIATE TIME WE ATTEMPTED A XSTART TO THE R ENG WHICH RESULTED IN A NORMAL START. AFTER COMPLETING THE 'BEFORE TKOF TO THE LINE' CHKLIST, WE CONTACTED GND FOR TAXI AND WENT ABOUT 100 YARDS FROM THE GATE WHEN WE NOTICED SMOKE IN THE COCKPIT. WE CONTACTED GND AND RETURNED TO THE GATE REQUESTING CFR. AT THE GATE WE EXPEDITIOUSLY UNLOADED THE PAX THROUGH THE MAIN CABIN DOOR AND NO PAX WERE INJURED. THE END RESULT WAS DETERMINED BY MAINT WHO DETERMINED THAT DURING THE HUNG START THE AIR FLOW WAS INSUFFICIENT TO SEAL THE ENG CASE ALLOWING OIL TO ENTER THE ENVIRONMENTAL SYS WHERE IT WAS BURNED AND ENTERED THE CABIN.

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.