Unauthorized runway entry crossing operation.

Attributes
ACN	317887
Time
Date	199510
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : boi
State Reference	ID
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	ground other : taxi
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent : approach
Route In Use	approach : visual
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Experience	flight time last 90 days : 225 flight time total : 5000 flight time type : 225
ASRS Report	317887
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	incursion : runway non adherence : clearance
Independent Detector	other controllera other flight crewa
Resolutory Action	none taken : insufficient time
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Ground control cleared us to taxi to runway 10L on taxiway J, hold short runway 10L (an air carrier Y B737 was on close right base to runway 10R). Tower controller asked air carrier Y if he could accept landing on runway 10L. They agreed and were given clearance to land on runway 10L. We were also given clearance to cross runway 10L, hold short runway 10R on taxiway J. I was running checklists and trying to stay orientated to where we were. I told the captain to hold 'here' short runway 10R. He said that this (the runway) was runway 10L and that we needed to cross it. Air carrier Y at this point was on close final for runway 10L. It looked to us he was aligned with runway 10R which the captain thought was runway 10L. After again looking right at the runway signs, I agreed with him, and we taxied across runway 10R which we thought was runway 10L. We misread the '28L-10R' runway sign, largely due to close proximity of the landing B737 as it also appeared to be aligned with runway 10R. With the pressure of having to make a fast decision I was able to be persuaded to agree with the captain against my better judgement.

Original NASA ASRS Text

Title: UNAUTH RWY ENTRY XING OP.

Narrative: GND CTL CLRED US TO TAXI TO RWY 10L ON TXWY J, HOLD SHORT RWY 10L (AN ACR Y B737 WAS ON CLOSE R BASE TO RWY 10R). TWR CTLR ASKED ACR Y IF HE COULD ACCEPT LNDG ON RWY 10L. THEY AGREED AND WERE GIVEN CLRNC TO LAND ON RWY 10L. WE WERE ALSO GIVEN CLRNC TO CROSS RWY 10L, HOLD SHORT RWY 10R ON TXWY J. I WAS RUNNING CHKLISTS AND TRYING TO STAY ORIENTATED TO WHERE WE WERE. I TOLD THE CAPT TO HOLD 'HERE' SHORT RWY 10R. HE SAID THAT THIS (THE RWY) WAS RWY 10L AND THAT WE NEEDED TO CROSS IT. ACR Y AT THIS POINT WAS ON CLOSE FINAL FOR RWY 10L. IT LOOKED TO US HE WAS ALIGNED WITH RWY 10R WHICH THE CAPT THOUGHT WAS RWY 10L. AFTER AGAIN LOOKING RIGHT AT THE RWY SIGNS, I AGREED WITH HIM, AND WE TAXIED ACROSS RWY 10R WHICH WE THOUGHT WAS RWY 10L. WE MISREAD THE '28L-10R' RWY SIGN, LARGELY DUE TO CLOSE PROX OF THE LNDG B737 AS IT ALSO APPEARED TO BE ALIGNED WITH RWY 10R. WITH THE PRESSURE OF HAVING TO MAKE A FAST DECISION I WAS ABLE TO BE PERSUADED TO AGREE WITH THE CAPT AGAINST MY BETTER JUDGEMENT.

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.