Unauthorized runway entry.

Attributes
ACN	295880
Time
Date	199502
Day	Sun
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : mex
State Reference	FO
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Night
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
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 250
ASRS Report	295880
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 200 flight time total : 8000 flight time type : 4000
ASRS Report	295405
Events
Anomaly	incursion : runway non adherence : clearance non adherence : far other anomaly other
Independent Detector	other controllera other flight crewa
Resolutory Action	flight crew : became reoriented other other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

During taxi from our gate to runway 5L mexico city, the captain taxied the aircraft on to runway 5L at taxiway B6 while I was completing checklists. When I looked up and saw we were on the runway I immediately told the captain he had taxied onto runway 5L and he taxied off at taxiway B5. As we exited the runway, tower called us to inform us we were on the runway and to clear it immediately. We were on the runway about 15-20 seconds and no aircraft was on final or ready to takeoff. The primary cause was the captain misread the airport diagram. He thought he was further to the northeast where taxiway B is not part of the ramp. Contributing factors include night-time even though visibility was excellent and the fact that I was head down doing accuload-FMC input and checklists because of the short taxi time and was not backing up the captain.

Original NASA ASRS Text

Title: UNAUTH RWY ENTRY.

Narrative: DURING TAXI FROM OUR GATE TO RWY 5L MEXICO CITY, THE CAPT TAXIED THE ACFT ON TO RWY 5L AT TXWY B6 WHILE I WAS COMPLETING CHKLISTS. WHEN I LOOKED UP AND SAW WE WERE ON THE RWY I IMMEDIATELY TOLD THE CAPT HE HAD TAXIED ONTO RWY 5L AND HE TAXIED OFF AT TXWY B5. AS WE EXITED THE RWY, TWR CALLED US TO INFORM US WE WERE ON THE RWY AND TO CLR IT IMMEDIATELY. WE WERE ON THE RWY ABOUT 15-20 SECONDS AND NO ACFT WAS ON FINAL OR READY TO TKOF. THE PRIMARY CAUSE WAS THE CAPT MISREAD THE ARPT DIAGRAM. HE THOUGHT HE WAS FURTHER TO THE NE WHERE TXWY B IS NOT PART OF THE RAMP. CONTRIBUTING FACTORS INCLUDE NIGHT-TIME EVEN THOUGH VISIBILITY WAS EXCELLENT AND THE FACT THAT I WAS HEAD DOWN DOING ACCULOAD-FMC INPUT AND CHKLISTS BECAUSE OF THE SHORT TAXI TIME AND WAS NOT BACKING UP THE CAPT.

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.