Light transport crew crossed runway after stuck microphone interfered with tower communication at la...

Attributes
ACN	492270
Time
Date	200011
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : lax.airport
State Reference	CA
Altitude	agl single value : 0
Aircraft 1
Controlling Facilities	tower : cyul.tower
Operator	common carrier : air taxi
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Operating Under FAR Part	Part 135
Flight Phase	ground : taxi
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tower : lax.tower
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Plan	IFR
Person 1
Affiliation	company : air taxi
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time total : 15000
ASRS Report	492270
Person 2
Affiliation	company : air taxi
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : flight engineer pilot : commercial pilot : cfi
Experience	flight time last 90 days : 230 flight time total : 2600 flight time type : 720
ASRS Report	492268
Events
Anomaly	incursion : runway non adherence : published procedure non adherence : far non adherence : clearance non adherence : company policies other anomaly other
Independent Detector	other controllera other flight crewa other flight crewb
Resolutory Action	none taken : detected after the fact
Supplementary
Problem Areas	Aircraft Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Landing on runway 25L requested to turn off on taxiway T. Controller said it was approved, but 'hurry on across.' I thought he said runway 25R. There was a stuck microphone on the frequency. I thought he said cross runway 25R. We read back 'cross runway 25R' but heard nothing due to the stuck microphone. This is what happened to the best of my memory. We crossed an active runway (runway 25R) without permission by mistake. Supplemental information from acn 492268: we had just landed runway 25L and requested a long rollout to taxiway T. ATC approved it. They told us to expedite and we also thought to cross runway 25R. We read it back, however, there was a stuck microphone as this happened and it made any communication very difficult for a min. ATC could not acknowledge anything until the stuck microphone was fixed. Also, we had already crossed runway 25R when we realized there was a stuck microphone. This is what happened to the best of my knowledge.

Original NASA ASRS Text

Title: LTT CREW CROSSED RWY AFTER STUCK MIKE INTERFERED WITH TWR COM AT LAX.

Narrative: LNDG ON RWY 25L REQUESTED TO TURN OFF ON TXWY T. CTLR SAID IT WAS APPROVED, BUT 'HURRY ON ACROSS.' I THOUGHT HE SAID RWY 25R. THERE WAS A STUCK MIKE ON THE FREQ. I THOUGHT HE SAID CROSS RWY 25R. WE READ BACK 'CROSS RWY 25R' BUT HEARD NOTHING DUE TO THE STUCK MIKE. THIS IS WHAT HAPPENED TO THE BEST OF MY MEMORY. WE CROSSED AN ACTIVE RWY (RWY 25R) WITHOUT PERMISSION BY MISTAKE. SUPPLEMENTAL INFO FROM ACN 492268: WE HAD JUST LANDED RWY 25L AND REQUESTED A LONG ROLLOUT TO TXWY T. ATC APPROVED IT. THEY TOLD US TO EXPEDITE AND WE ALSO THOUGHT TO CROSS RWY 25R. WE READ IT BACK, HOWEVER, THERE WAS A STUCK MIKE AS THIS HAPPENED AND IT MADE ANY COM VERY DIFFICULT FOR A MIN. ATC COULD NOT ACKNOWLEDGE ANYTHING UNTIL THE STUCK MIKE WAS FIXED. ALSO, WE HAD ALREADY CROSSED RWY 25R WHEN WE REALIZED THERE WAS A STUCK MIKE. THIS IS WHAT HAPPENED TO THE BEST OF MY KNOWLEDGE.

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.

Light transport crew crossed runway after stuck microphone interfered with tower communication at lax.